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Xu SJ, Liu XL, Shi JP, Shi JX. The Effect of Topical Vancomycin Powder Application on the Rate of Intervertebral Fusion Following Lumbar Fusion: A Retrospective Study. World Neurosurg 2024; 185:e1216-e1223. [PMID: 38514028 DOI: 10.1016/j.wneu.2024.03.059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Accepted: 03/13/2024] [Indexed: 03/23/2024]
Abstract
PURPOSE The occurrence of surgical site infection (SSI) after lumbar spinal fusion is a serious complication. Therefore, an increasing number of clinicians are applying vancomycin powder topically in the surgical field to reduce the incidence of SSI. However, there is concern that topical vancomycin powder application may affect intervertebral fusion. The purpose of this study was to analyse the effect of clinically relevant topical vancomycin doses on the rate of intervertebral fusion after lumbar fusion and to further investigate the effect of vancomycin powder on the prevention of SSI. METHODS The clinical data of 192 patients with degenerative lumbar spine disease admitted from January 2019 to June 2022, all of whom underwent posterior lumbar fusion, were retrospectively analysed. According to the infection prevention protocol, they were divided into a vancomycin group and a control group (no vancomycin), and the vancomycin group was sub-divided into 0.5 g, 1.0 g, and 1.5 g vancomycin groups. General information and surgical evaluation indexes were compared between the control and vancomycin groups and intervertebral fusion was compared between the vancomycin groups at 6 months and 12 months, postoperatively. RESULTS The rate of SSI in the vancomycin group was 0.0%, which was significantly lower than that in the control group (5.3%, P < 0.05), and intervertebral fusion was good in all 3 vancomycin groups at 6 months and 12 months postoperatively, with no statistically-significant differences (P > 0.05). CONCLUSIONS Topical application of 0.5 g, 1.0 g, or 1.5 g vancomycin powder did not affect the rates of intervertebral fusion after lumbar fusion. In addition, topical application of vancomycin powder significantly reduced the rates of SSI.
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Affiliation(s)
- Sheng-Jie Xu
- Department of Orthopedic Surgery, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, China
| | - Xiao-Lin Liu
- Department of Orthopedic Surgery, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, China
| | - Jin-Peng Shi
- Department of Orthopedic Surgery, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, China
| | - Jin-Xing Shi
- Department of Orthopedic Surgery, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, China.
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Choi SW, Hwang JY, Baek MJ, Lee JC, Jang HD, Kim JH, Shin BJ. Effectiveness of vancomycin powder for preventing postoperative spinal infection. Clin Neurol Neurosurg 2024; 239:108222. [PMID: 38484602 DOI: 10.1016/j.clineuro.2024.108222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 02/28/2024] [Accepted: 02/29/2024] [Indexed: 04/02/2024]
Abstract
OBJECTIVE This study aimed to assess the effectiveness of Vancomycin Power (VP) and the occurrence of resistant organisms after four-year of routine VP use. METHODS The study included 1063 patients who underwent posterior lumbar interbody fusion (PLIF) and transforaminal lumbar interbody fusion (TLIF) between January 2010 and February 2020. Intrawound VP was applied to all instrumented fusions starting in January 2016. The patients were divided into two groups: those who did not apply VP (non-VP) (n = 605) between 2010 and 2015, and those who did apply VP (VP) (n = 458) between 2016 and 2020. The baseline characteristics, clinical symptoms, infection rate, and causative organisms were compared between the two groups. RESULTS The rate of PSI was not significantly different between the non-VP group (1.32 %, n = 8) and the VP group (1.09 %, n = 5). Although adjusted by diabetes mellitus, VP still did not show statistical significance (OR = 0.757 (0.245-2.345), p = 0.630). There were no critical complications that were supposed to relation with vancomycin powder. In the 13 cases of PSI, seven pathogens were isolated, with a gram-negative organism identified in the non-VP group. However, the type of organism was not significantly different between the two groups. CONCLUSIONS The use of intrawound VP may not affect the PSI and occurrence of resistant organism and may not cause critical complications. Therefore, clinicians may decide whether to use VP for preventing PSI not worrying about its safety.
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Affiliation(s)
- Sung-Woo Choi
- Department of Orthopedic Surgery, Soonchunhyang University Seoul Hospital, Seoul, the Republic of Korea.
| | - Jin Yeong Hwang
- Department of Orthopedic Surgery, Soonchunhyang University Seoul Hospital, Seoul, the Republic of Korea
| | - Min Jung Baek
- Department of Obstetrics and Gynecology, Bundang CHA Hospital, Seongnam, the Republic of Korea
| | - Jae Chul Lee
- Department of Orthopedic Surgery, Soonchunhyang University Seoul Hospital, Seoul, the Republic of Korea
| | - Hae-Dong Jang
- Department of Orthopedic Surgery, Soonchunhyang University Bucheon Hospital, Bucheon, the Republic of Korea
| | - Jae-Hyun Kim
- Department of Orthopedic Surgery, Soonchunhyang University Bucheon Hospital, Bucheon, the Republic of Korea
| | - Byung Joon Shin
- Department of Orthopedic Surgery, Soonchunhyang University Seoul Hospital, Seoul, the Republic of Korea
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3
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Kaiser S, Verboket RD, Frank J, Marzi I, Janko M. Effectiveness of combined local therapy with antibiotics and fibrin vs. vacuum-assisted wound therapy in soft tissue infections: a retrospective study. Eur J Trauma Emerg Surg 2024:10.1007/s00068-024-02483-1. [PMID: 38466400 DOI: 10.1007/s00068-024-02483-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2024] [Accepted: 02/20/2024] [Indexed: 03/13/2024]
Abstract
PURPOSE Soft tissue infections can be severe and life-threatening. Their treatment consists currently in radical surgical wound debridement and combined systemic antimicrobial therapy. Different side effects are possible. Local antibiotic therapy represents a new approach to reduce side effects and improve healing. The aim of this study is to assess the effectiveness of the local sprayed use of antibiotics with fibrin sealing compared with negative pressure wound therapy as an established treatment of soft-tissue infections. METHODS In this retrospective study, patients with soft tissue infections who underwent surgical treatment were analysed. One group consists of patients, who received local fibrin-antibiotic spray (FAS) (n = 62). Patients treated by vacuum-assisted wound therapy (VAWT) as the established treatment were the control group (n = 57). Main outcomes were differences in the success of healing, the duration until healing and the number of needed operations. RESULTS Clinical healing could be achieved for 55 patients (98.21%) in the FAS group vs. 47 patients (92.16%) in the VAWT group (p = 0.19). Time to require this was 10.65 ± 10.38 days in the FAS group and 22.85 ± 14.02 days in the VAWT group (p < 0.001). In the FAS group, patients underwent an average of 1.44 ± 0.72 vs.3.46 ± 1.66 operations in the VAWT group (p < 0.001). CONCLUSION Compared to vacuum-assisted wound therapy in soft tissue infections, local fibrin-antibiotic spray shows faster clinical healing and less needed operations. Leading to shorter hospital stays and more satisfied patients. The combination of sprayed fibrin and antibiotics can be seen as a promising and effective method.
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Affiliation(s)
- S Kaiser
- Department of Trauma, Hand and Reconstructive Surgery, University Hospital, Goethe University Frankfurt, Theodor‑Stern‑Kai 7, 60590, Frankfurt am Main, Germany
| | - R D Verboket
- Department of Trauma, Hand and Reconstructive Surgery, University Hospital, Goethe University Frankfurt, Theodor‑Stern‑Kai 7, 60590, Frankfurt am Main, Germany.
| | - J Frank
- Department of Trauma, Hand and Reconstructive Surgery, University Hospital, Goethe University Frankfurt, Theodor‑Stern‑Kai 7, 60590, Frankfurt am Main, Germany
| | - I Marzi
- Department of Trauma, Hand and Reconstructive Surgery, University Hospital, Goethe University Frankfurt, Theodor‑Stern‑Kai 7, 60590, Frankfurt am Main, Germany
| | - M Janko
- Department of Trauma, Hand and Reconstructive Surgery, University Hospital, Goethe University Frankfurt, Theodor‑Stern‑Kai 7, 60590, Frankfurt am Main, Germany
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4
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Gandhi M, Balaji G, Menon J, Thomas RR. Does topical vancomycin prevent fracture-related infections in closed fractures undergoing open reduction and internal fixation? A randomised controlled trial. Chin J Traumatol 2024; 27:71-76. [PMID: 38071168 DOI: 10.1016/j.cjtee.2023.11.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 09/09/2023] [Accepted: 10/12/2023] [Indexed: 04/02/2024] Open
Abstract
PURPOSE The role of topical vancomycin in fracture-related infection (FRI) is debatable. Very few studies have reported their efficacy in open and high-risk extremity fractures. This study aimed to assess topical vancomycin's role in reducing FRI in closed fractures undergoing open surgical intervention with an implant. METHODS This prospective randomized cohort study was carried out between February 2021 to January 2022. Patients with isolated closed fractures, who were planned for open reduction and internal fixation within 2 weeks from the time of injury were included for this study. The data collected included age, gender, socioeconomic status, mechanism of injury, diagnosis, Tscherne classification, and time interval to take up for surgery. Patients were randomized into the intervention and control groups using the block randomization technique. The control group received only systemic antibiotic prophylaxis, whereas the intervention group received topical application of vancomycin powder in the surgical wound alongside systemic antibiotic prophylaxis. The primary outcome measure was the incidence of FRI among these individuals. Clinical and radiological findings and culture reports (in cases with infection) were recorded during the post-operative period and at 6 weeks of follow-up. All relevant statistical calculations were done using STATA statistical/data analysis-parallel edition version 16.0 (StataCorp LLC). The quantitative variables like age and duration of the surgery were assessed for normalcy by Shapiro-Wilk W test. An independent samples t-test with equal variances was applied to the age data. Fisher's exact test was used for the analysis of the primary outcome measure (presence of FRI following surgery), and "Risk of FRI" and "Risk difference" between the 2 groups was calculated. The strength of the association between qualitative variables was assessed using the Fisher's exact and Chi-square tests, respectively. RESULTS There were 88 patients included in this study. No statistical significance was found about FRI between both groups (p = 0.494). At 6 weeks following surgery, no incidence of infection was observed in the intervention group. Two infections (4.5%) were found in the control group, with positive cultures reported in one of them but none in the treatment group. Radiologically, 15.9% of patients in the control group showed lysis around the implant compared to 2.3% in the intervention group. Impaired fracture healing was observed in 22.7% of patients in the intervention group compared to 15.9% in the control group. CONCLUSION Applying topical vancomycin in closed fractures undergoing open reduction and internal fixation does not significantly reduce the incidence of FRI until the end of 6 weeks following surgery.
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Affiliation(s)
- Mohit Gandhi
- Department of Orthopaedics, Jawaharlal Institute of Postgraduate Medical Education and Research, Pondicherry, India
| | - Gopisankar Balaji
- Department of Orthopaedics, Jawaharlal Institute of Postgraduate Medical Education and Research, Pondicherry, India.
| | - Jagdish Menon
- Department of Orthopaedics, Jawaharlal Institute of Postgraduate Medical Education and Research, Pondicherry, India
| | - Ruben Raj Thomas
- Department of Preventive and Social Medicine, Jawaharlal Institute of Postgraduate Medical Education and Research, Pondicherry, India
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Pinter Z, Honig R, Sebastian A, Nassr A, Freedman B, Yaszemski M, Huddleston P, Berbari E, Currier B. Does Intrawound Vancomycin Decrease Postoperative Surgical Site Infection in Spine Surgery: A Retrospective Case-control Study. Clin Spine Surg 2024:01933606-990000000-00258. [PMID: 38321609 DOI: 10.1097/bsd.0000000000001578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 10/03/2023] [Indexed: 02/08/2024]
Abstract
STUDY DESIGN Retrospective Case-Control series. OBJECTIVE The objective of this study is to define the overall postoperative rate of surgical site infection (SSI) in patients undergoing spine surgery and examine the effects of intrawound Vancomycin on postoperative infection rates. SUMMARY OF BACKGROUND DATA Surgical site infections (SSI) account for 22% of all health care-associated infections. The use of intrawound Vancomycin in an attempt to reduce the incidence of postoperative SSI has not been sufficiently evaluated in the existing literature. METHODS All spine surgeries (n=19,081) from our institution were reviewed from 2003 to 2013. All cases of verified SSI were identified from the database. Cases were then matched to controls in a 1:1 fashion based on age, gender, and date of surgery (+/-30 d). Patient demographics, comorbidities, estimated blood loss, duration of surgery, intrawound administration of Vancomycin, and smoking status were evaluated. RESULTS At total of 316 cases of SSI after spine surgery were identified, representing an infection rate of 1.7%. The mean follow-up for cases and controls was 31.5 and 41.6 months, respectively. OR for intrawound Vancomycin was 0.44 (95% CI 0.23-0.88, P=0.019). OR for BMI greater than 30 was 1.63 (95% CI 1.04-2.56, P=0.03). CONCLUSIONS In this large cohort of spine surgery patients, administration of intrawound Vancomycin was associated with a significant reduction in postoperative surgical site infections. Further studies are needed to determine appropriate dosing and application as well as long-term safety in spine surgery.
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Zale C, Nicholes M, Hu S, Cage JM. Surgical site infection prophylaxis with intra-wound vancomycin powder for uninstrumented spine surgeries: a meta-analysis. EUROPEAN SPINE JOURNAL : OFFICIAL PUBLICATION OF THE EUROPEAN SPINE SOCIETY, THE EUROPEAN SPINAL DEFORMITY SOCIETY, AND THE EUROPEAN SECTION OF THE CERVICAL SPINE RESEARCH SOCIETY 2023; 32:4259-4264. [PMID: 37615727 DOI: 10.1007/s00586-023-07897-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 07/17/2023] [Accepted: 08/09/2023] [Indexed: 08/25/2023]
Abstract
PURPOSE It is unclear if intra-wound vancomycin powder significantly reduces the infection rate for uninstrumented spine surgery. The purpose of this study is to compare the rate of surgical site infection (SSI) in uninstrumented spine surgery that used vancomycin powder against controls. METHODS A search was performed on PUBMED/MEDLINE, Cochrane Database and Embase on 14 October 2022. Search keywords were "vancomycin, spine surgery, uninstrumented and spinal surgery." Instrumented cases were excluded. Type of surgery, type of treatment and incidence of infection among experimental or control were recorded. RESULTS 288 articles were obtained from a literature search. 16 studies met inclusion criteria. 6/16 studies that reported on the infection rate using vancomycin were obtained. There were 1376 control cases with 20 cases of post-operative infection (1.45% overall). There were 795 cases that received prophylactic intra-wound vancomycin powder with 10 cases of infection reported (1.26%). There was no significant difference in infections between cases that received vancomycin compared to control. On subgroup analysis, studies that had a high rate of infection (Strom and Cannon) had a significant difference on the rate of infection with the use of vancomycin compared to control. DISCUSSION AND CONCLUSION The current study was unable to conclude that vancomycin decreased the rate of surgical site infections. Vancomycin use may be useful in populations that have a high rate of infection. Limitations in this study include the small number of studies that report on the use of vancomycin on uninstrumented spine surgery.
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Affiliation(s)
- Connor Zale
- Tripler Army Medical Center, 1 Jarrett White Rd. Medical Center, Honolulu, HI, 96859, USA.
| | - Marc Nicholes
- William Beaumont Army Medical Center, 18511 Highlander Medics St., Fort Bliss, TX, 79918, USA
| | - Serena Hu
- Stanford University, 450 Broadway Street MC6342, Redwood City, CA, 94063, USA
| | - JMatthew Cage
- Tripler Army Medical Center, 1 Jarrett White Rd. Medical Center, Honolulu, HI, 96859, USA
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Sonbol AM, Baabdullah AM, Mohamed MAA, Kassab FN. Intrawound low-dose vancomycin is superior to high-dose in controlling the risk of wound dehiscence in spine surgeries. Medicine (Baltimore) 2023; 102:e33369. [PMID: 37058065 PMCID: PMC10101275 DOI: 10.1097/md.0000000000033369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2022] [Accepted: 03/07/2023] [Indexed: 04/15/2023] Open
Abstract
Wound complications in spine surgeries are common and serious. This study aimed to determine the risk of wound dehiscence with a low-dose of intrawound vancomycin compared to that with a high-dose and no-vancomycin and its effectiveness in the prevention of surgical site infection. Patients were categorized into 3 groups. The first group did not receive any intrawound vancomycin. In the second, patients received a high-dose of vancomycin (1 g). The third group included patients who received a low-dose of intrawound vancomycin (250 mg). Patient demographics, clinical data, and surgical data were also collected. Multivariate linear regression analysis was used to examine factors associated with dehiscence or infection. Of the 391 patients included in our study, 56 (14.3%) received a high-dose of intrawound vancomycin, 126 (32.2%) received a low-dose, and 209 (53.5%) did not receive any treatment. The overall incidence of wound dehiscence was 6.14% (24 out of 391 patients). Wound dehiscence was significantly higher (P = .039) in the high-dose vancomycin group than in the low-dose vancomycin group. The overall incidence of postoperative infection was 2.05% (8 patients) and no statistically significant differences were observed between the low-dose and high-dose vancomycin groups. Patients with higher body mass index were more likely to experience wound dehiscence and postoperative infection, irrespective of the dose of vancomycin used. The use of low-dose intrawound vancomycin (250 mg) resulted in less wound dehiscence compared with high-dose vancomycin. Further trials are required to evaluate the effectiveness of the low-dose in preventing postoperative infections.
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Affiliation(s)
- Ahmed M. Sonbol
- Musculoskeletal Center of Excellence, International Medical Center, Jeddah, Saudi Arabia
| | - Ayman M. Baabdullah
- Musculoskeletal Center of Excellence, International Medical Center, Jeddah, Saudi Arabia
| | | | - Farid N. Kassab
- Musculoskeletal Center of Excellence, International Medical Center, Jeddah, Saudi Arabia
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Tian B, He Y, Han Z, Liu T, Zhang X. Effect of powdered vancomycin on stopping surgical site wound infections in neurosurgery: A meta-analysis. Int Wound J 2023; 20:1139-1150. [PMID: 36237125 PMCID: PMC10031230 DOI: 10.1111/iwj.13973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Revised: 09/15/2022] [Accepted: 09/27/2022] [Indexed: 11/28/2022] Open
Abstract
We performed a meta-analysis to evaluate the effect of powdered vancomycin on stopping surgical site wound infections in neurosurgery. A systematic literature search up to July 2022 was performed and 24 137 subjects with neurosurgery at the baseline of the studies; 10 496 of them were using the powdered vancomycin, and 13 641 were not using the powdered vancomycin as a control. Odds ratio (OR) with 95% confidence intervals (CIs) were calculated to assess the effect of powdered vancomycin on stopping surgical site wound infections in neurosurgery using dichotomous methods with a random or fixed-effect model. The powdered vancomycin had significantly lower surgical site wound infections after spinal surgery (OR, 0.53; 95% CI, 0.41-0.70, P < .001), deep surgical site wound infections after spinal surgery (OR, 0.45; 95% CI, 0.35-0.57, P < .001), superficial surgical site wound infections after spinal surgery (OR, 0.60; 95% CI, 0.43-0.83, P = .002), and surgical site wound infections after cranial surgery (OR, 0.37; 95% CI, 0.22-0.61, P < .001) compared to control in subjects with neurosurgery. The powdered vancomycin had significantly lower surgical site wound infections after spinal surgery, deep surgical site wound infections after spinal surgery, superficial surgical site wound infections after spinal surgery, and surgical site wound infections after cranial surgery compared to control in subjects with neurosurgery. The analysis of outcomes should be done with caution even though the low number of studies with low sample size, 3 out of the 42 studies, in the meta-analysis, and a low number of studies in certain comparisons.
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Affiliation(s)
- Bo Tian
- Department of Neurosurgery, Tangdu Hospital, Air Force Medical University, Xi'an, China
| | - Yanli He
- Department of Radiology, Tangdu Hospital, Air Force Medical University, Xi'an, China
| | - Zian Han
- Department of Neurosurgery, Tangdu Hospital, Air Force Medical University, Xi'an, China
| | - Tianjing Liu
- Department of Neurosurgery, Tangdu Hospital, Air Force Medical University, Xi'an, China
| | - Xingye Zhang
- Department of Neurosurgery, Tangdu Hospital, Air Force Medical University, Xi'an, China
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Hu W, Wang H, Wu X, Shi X, Ma H, Zhang K, Gao Y. Does the Microflora of Surgery Site Infection Change After Prophylactic Use of Vancomycin Powder in the Spine Surgery. Infect Drug Resist 2023; 16:105-113. [PMID: 36636373 PMCID: PMC9831077 DOI: 10.2147/idr.s390837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Accepted: 12/22/2022] [Indexed: 01/06/2023] Open
Abstract
Study Design Retrospective cohort study. Objective This study aimed to investigate the characteristics of microflora in patients with deep spinal surgical site infection (SSI) after prophylactic use of vancomycin powder (VP). Methods A retrospective analysis was performed on patients after spinal surgery. Patients were grouped according to whether VP use and only patients with deep SSI were included in this study. General information of the patients, the dose of vancomycin, bacterial culture results, drug sensitivity test results, and SSI treatment methods were recorded. The differences of microflora between the two groups were analyzed, and the sensitivity of bacteria in the +VP group to antibiotics was analyzed. Results The infection rate in the +VP group was 4.9% (56/1124) vs 6.3% (93/1476) in the No-VP group (P < 0.05). The proportion of Gram-positive bacteria (GPB) in the +VP SSIs was 55.4% vs.74.1% in the No-VP group (P < 0.05). The percentage of Gram-negative bacteria (GNB) in the +VP SSIs was 46.4% vs.30.1% in the No-VP group (P < 0.05). More dose of VP cannot decrease the SSI, but the proportion of GNB in VP >1g SSIs was higher (59.0% vs 32.4%, P < 0.05). In the +VP SSIs, all of the GNB cultured were sensitive to meropenem, and linezolid covered most of the GPB cultured. Conclusion Local use of vancomycin powder can reduce the incidence of SSI, but this may lead to changes in the bacterial flora. Once the SSI occurs, the case of GNB infection may be increased. The more dose of VP cannot decrease SSI but may increase the rate of GNB in the +VP SSIs. Once infections still occur after VP use, antibiotics covering GNB may be added. These findings may help guide choice of empiric antibiotics while awaiting culture data.
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Affiliation(s)
- Weiran Hu
- Department of Spine and Spinal Cord Surgery, Henan Provincial People’s Hospital, Zhengzhou, People’s Republic of China,Department of Spine and Spinal Cord Surgery, People’s Hospital of Zhengzhou University, Zhengzhou, People’s Republic of China
| | - Hongqiang Wang
- Department of Spine and Spinal Cord Surgery, Henan Provincial People’s Hospital, Zhengzhou, People’s Republic of China,Department of Spine and Spinal Cord Surgery, People’s Hospital of Zhengzhou University, Zhengzhou, People’s Republic of China
| | - Xiaonan Wu
- Department of Spine and Spinal Cord Surgery, Henan Provincial People’s Hospital, Zhengzhou, People’s Republic of China,Department of Spine and Spinal Cord Surgery, People’s Hospital of Henan University, Zhengzhou, People’s Republic of China
| | - Xinge Shi
- Department of Spine and Spinal Cord Surgery, Henan Provincial People’s Hospital, Zhengzhou, People’s Republic of China,Department of Spine and Spinal Cord Surgery, People’s Hospital of Zhengzhou University, Zhengzhou, People’s Republic of China
| | - Haohao Ma
- Department of Spine and Spinal Cord Surgery, Henan Provincial People’s Hospital, Zhengzhou, People’s Republic of China,Department of Spine and Spinal Cord Surgery, People’s Hospital of Zhengzhou University, Zhengzhou, People’s Republic of China
| | - Kai Zhang
- Department of Spine and Spinal Cord Surgery, Henan Provincial People’s Hospital, Zhengzhou, People’s Republic of China,Department of Spine and Spinal Cord Surgery, People’s Hospital of Zhengzhou University, Zhengzhou, People’s Republic of China
| | - Yanzheng Gao
- Department of Spine and Spinal Cord Surgery, Henan Provincial People’s Hospital, Zhengzhou, People’s Republic of China,Department of Spine and Spinal Cord Surgery, People’s Hospital of Zhengzhou University, Zhengzhou, People’s Republic of China,Correspondence: Yanzheng Gao, Department of Spine and Spinal Cord Surgery, Henan Provincial People’s Hospital, No. 7, Wei Wu Road, Zhengzhou, 450003, People’s Republic of China, Email
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10
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Liao S, Yang Z, Li X, Chen J, Liu JG. Effects of different doses of vancomycin powder in total knee and hip arthroplasty on the periprosthetic joint infection rate: a systematic review and meta-analysis. J Orthop Surg Res 2022; 17:546. [PMID: 36527075 PMCID: PMC9758814 DOI: 10.1186/s13018-022-03445-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Accepted: 12/09/2022] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Periprosthetic joint infection (PJI) following total joint arthroplasty (TJA) is a serious complication for patients. Some joint surgeons have tried to use vancomycin powder (VP) in total knee and total hip arthroplasty to prevent postoperative PJI, but its effect is still not clear. At present, there is no meta-analysis that specifically analyses the effect of different doses of vancomycin powder on the incidence of PJI. METHODS We carried out a search based on the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines and identified the studies we needed. Review Manager (RevMan) 5.3 software was employed for statistical analysis. RESULTS The analysis of primary TKA (PTKA) showed that using 1 g (RR 0.38, 95% CI 0.22-0.67 [P = 0.0008]) and 2 g (RR 0.48, 95% CI 0.31-0.74 [P = 0.0008]) of vancomycin powder in primary TKA (PTKA) could all significantly prevent PJI. The analysis of primary THA (PTHA) showed that using 1 g (RR 0.37, 95% CI 0.17-0.80 [P = 0.01]) of vancomycin powder effectively decreased the incidence of PJI, while using 2 g (RR 1.02, 95% CI 0.53-1.97 [P = 0.94]) of vancomycin powder had no significant effect on preventing PJI. Because the data were abnormal, we believed the conclusion that using 2 g of vancomycin powder in primary THA had no effect on preventing PJI was doubtful. Using vancomycin powder in revision TKA (RTKA) significantly reduced the PJI rate (RR 0.33, 95% CI 0.14-0.77 [P = 0.01]), similar to revision THA (RTHA) (RR 0.37, 95% CI 0.14-0.96 [P = 0.04]). CONCLUSIONS In primary TKA, both 1 g and 2 g of vancomycin powder can effectively prevent PJI. In primary THA, using 1 g of vancomycin powder is a better choice, while the effect of using 2 g of vancomycin powder is not clear, and a more prospective randomized controlled trial should be done to verify it. In revision TKA and revision THA, vancomycin powder is a good choice to prevent PJI.
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Affiliation(s)
- Shiyu Liao
- grid.430605.40000 0004 1758 4110Department of Orthopaedics, The First Hospital of Jilin University, No. 71, Xinmin Street, Chaoyang District, Changchun, 130000 Jilin China
| | - Zhize Yang
- grid.430605.40000 0004 1758 4110Department of Orthopaedics, The First Hospital of Jilin University, No. 71, Xinmin Street, Chaoyang District, Changchun, 130000 Jilin China
| | - Xiao Li
- grid.430605.40000 0004 1758 4110Department of Orthopaedics, The First Hospital of Jilin University, No. 71, Xinmin Street, Chaoyang District, Changchun, 130000 Jilin China
| | - Jintian Chen
- grid.430605.40000 0004 1758 4110Department of Orthopaedics, The First Hospital of Jilin University, No. 71, Xinmin Street, Chaoyang District, Changchun, 130000 Jilin China
| | - Jian-guo Liu
- grid.430605.40000 0004 1758 4110Department of Orthopaedics, The First Hospital of Jilin University, No. 71, Xinmin Street, Chaoyang District, Changchun, 130000 Jilin China
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Kavak G, Kırçıl C, Pelgur H, Topçu E, Yanmaz Erdoğmuş E, Ayabakan T, Acaroglu ER. Implementing an infection control checklist May not be effective in reducing the incidence of surgical site infections in spinal surgery. J Infect Prev 2022; 23:269-277. [PMID: 36277857 PMCID: PMC9583439 DOI: 10.1177/17571774221127620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2023] Open
Abstract
Background Surgical site infections (SSI) in instrumented spine surgery remains as a major complication with increased morbidity. Although implementation of surgical safety checklists has been reported to lower the rates of SSI, reproducibility of these remain unclear. Objective The specific aim of this study was to explore the results of implementation of a SSI control protocol in regard to its efficacy in decreasing the rate of SSI. Methods A total of 140 instrumented spinal surgery cases between 2018 and 2021 were divided into two groups as Group 1 (checklist implemented) and Group 2 (control) and these were compared regarding SSI rates, patient rand surgery related factors, laboratory findings and infecting microorganisms. Results Ten SSIs were encountered in Group 1 (20.8%), whereas only nine in Group 2 (9.8%). Although not statistically significant (p > .05), these results highly favor the non-checklist implemented group regarding the development of SSI. A definitive infective microorganism could be identified in five out of 10 SSI in Group 1 and 6 out of nine in Group 2. Whereas only three out of 11 (27.3%) involved Gr (+) agents, rest of eight out of 11 (72.7%) involved Gr (-) agents. Discussion A failure in decreasing the SSI rate through the implementation of a SSI prevention checklist may be due to several factors pertaining to the study design, patient characteristics and the Gr (-) dominance in SSIs in our center. Nevertheless, this suggests that checklist implementation to prevent SSI in instrumented spine surgery may not be effective in all contexts.
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Staphylococcus Aureus Swabbing and Decolonization Before Neuromodulation Procedures: A Systematic Review and Meta-analysis. Neuromodulation 2022:S1094-7159(22)01227-2. [DOI: 10.1016/j.neurom.2022.07.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 07/04/2022] [Accepted: 07/07/2022] [Indexed: 11/06/2022]
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Hyodo Y, Arizono T, Inokuchi A, Hamada T, Imamura R. Prophylactic Intrawound Vancomycin Powder in Minimally Invasive Spine Stabilization May Cause an Acute Inflammatory Response. Cureus 2022; 14:e28881. [PMID: 36225472 PMCID: PMC9541380 DOI: 10.7759/cureus.28881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/07/2022] [Indexed: 11/12/2022] Open
Abstract
Introduction Surgical site infections (SSIs) with methicillin-resistant Staphylococcus aureus are serious complications of spinal instrumentation surgery. Many spine surgeons are concerned that using prophylactic vancomycin powder will lead to certain risks: the development of multidrug-resistant pathogens, anaphylactic reactions, and organ toxicity. Minimally invasive spine stabilization (MISt) is associated with shorter operation times and less blood loss and may therefore require the use of less vancomycin powder, which may reduce these risks. This retrospective comparative study of patients who underwent MISt at a single institution aimed to evaluate the complications (such as allergy, SSIs, and organ toxicity) and the local and serum levels associated with using prophylactic intrawound vancomycin powder compared with IV cefazolin alone. Methods Thirty-four patients received intrawound vancomycin powder (1 g) applied during wound closure in minimally invasive posterior lumbar interbody fusion (MIS-PLIF). This group was compared with 133 control patients who did not receive vancomycin. White blood cell counts and C-reactive protein (CRP) levels were measured for both groups on postoperative days (PODs) 1, 3, and 7 and were statistically analyzed. In the vancomycin group, serum vancomycin levels were measured on PODs 1, 3, 7, and 14; drain vancomycin levels and postoperative blood loss were determined on PODs 1 and 2. Results The CRP levels on PODs 1 and 3 were significantly higher in the vancomycin group than in the control group (P<0.001, P=0.024). In the vancomycin group, mean drain levels trended downward from 313 μg/mL (POD 1) to 155 μg/mL (POD 2). These levels correlated negatively with drain drainage volume on both days (POD 1: r=-0.48, P=0.015; POD 2: r=-0.47, P=0.019). Mean serum vancomycin levels also trended downward from 2.3 μg/mL (POD 1) to 1.7 μg/mL (POD 14). Conclusions Our results unexpectedly demonstrated that the local application of vancomycin powder causes an acute inflammatory response and the long-term detection of low serum vancomycin levels. Less than 1 g of intrawound vancomycin powder may be useful only at high risk of SSI.
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Karczewski D, Schnake KJ, Osterhoff G, Spiegl U, Scheyerer MJ, Ullrich B, Pumberger M. Postoperative Spinal Implant Infections (PSII)-A Systematic Review: What Do We Know So Far and What is Critical About It? Global Spine J 2022; 12:1231-1246. [PMID: 34151619 PMCID: PMC9210225 DOI: 10.1177/21925682211024198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
STUDY DESIGN Systematic review. OBJECTIVES Postoperative spinal implant infections (PSII) are an increasing challenge in the daily clinical routine. This review summarizes existing knowledge in the field of PSII, including definitions, epidemiology, classifications, risk factors, pathogenesis, symptoms, diagnosis, and treatment. METHODS A systematic review was performed using a structured PubMed analysis, based on the PRISMA criteria. The search terminology was set as: "spinal implant associated infection OR spinal implant infection OR spinal instrumentation infection OR peri spinal implant infection." PubMed search was limited to the categories randomized controlled trials (RCT), clinical trials, meta-analysis and (systematic) reviews, whereas case reports were excluded. Studies from January 2000 to December 2020 were considered eligible. A total of 572 studies were identified, 82 references included for qualitative synthesis, and 19 for detailed sub analysis (12 meta-analysis, 7 prospective RCT). RESULTS Structural problems in the field of PSII were revealed, including (1) limited level of evidence in clinical studies (missing prospective RCT, metanalyzes), (2) small patient numbers, (3) missing standardized definitions, (4) heterogeneity in patient groups, and (5) redundancy in cited literature. CONCLUSION Evidence-based knowledge about spinal implant-associated infections is lacking. All involved medical fields should come together to define the term PSII and to combine their approaches toward research, training, and patient care.
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Affiliation(s)
- Daniel Karczewski
- Center for Musculoskeletal Surgery, Department of Orthopaedic Surgery, Charité–Universitaetsmedizin Berlin, Berlin, Germany,Daniel Karczewski, Department of Orthopaedics, Center for Musculoskeletal Surgery, Charité—Universitätsmedizin Berlin, Charitéplatz 1, D-10117 Berlin, Germany.
| | - Klaus J. Schnake
- Center for Spinal and Scoliosis Surgery, Malteser Waldkrankenhaus St. Marien, Erlangen, Germany,Department of Orthopedics and Traumatology, Paracelsus Private Medical University Nuremberg, Nuremberg, Germany
| | - Georg Osterhoff
- Department of Orthopaedics, Trauma and Plastic Surgery, University Hospital Leipzig, Leipzig, Germany
| | - Ulrich Spiegl
- Department of Orthopaedics, Trauma and Plastic Surgery, University Hospital Leipzig, Leipzig, Germany
| | - Max J. Scheyerer
- Department of Orthopedic and Trauma Surgery, Medical Faculty, University of Cologne, Cologne, Germany
| | - Bernhard Ullrich
- Department of Trauma, Hand and Reconstructive Surgery, Jena University Hospital, Friedrich Schiller University Jena, Jena, Germany,Department of Trauma and Reconstructive Surgery, BG Clinic Bergmannstrost, Halle (Saale), Germany
| | - Matthias Pumberger
- Center for Musculoskeletal Surgery, Department of Orthopaedic Surgery, Charité–Universitaetsmedizin Berlin, Berlin, Germany
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Prevalence of Surgical Site Infection among Caesarean Section Patients in a Teaching Hospital in Ekiti State, Nigeria: An eight-year review. SCIENTIFIC AFRICAN 2022. [DOI: 10.1016/j.sciaf.2022.e01216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Bratschitsch G, Puchwein P, Zollner-Schwetz I, Sadoghi P, Radl R, Leithner A, Leitner L. Spinal Surgery Site Infection Leading to Implant Loosening Is Influenced by the Number of Prior Operations. Global Spine J 2022; 12:458-463. [PMID: 32954814 PMCID: PMC9121164 DOI: 10.1177/2192568220957268] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
STUDY DESIGN Retrospective Cohort Study. OBJECTIVES Spinal surgery site infection and chronic implant infection are possible causes for ongoing pain, implant loosening, and failed back surgery syndrome. Evidence of chronic infection was found in 29.1% of revision cases but is also found in a considerable number of degenerative cases without prior surgery. Infection mechanisms and possible clinical correlations are unclear. METHODS Retrospective analysis of standardized surgery site screening (swab, tissue samples, implant sonication) in 181 cases without clinical evidence of preoperative surgery site infection. RESULTS Screening results of cases without prior spinal surgery (n = 49, 10.2% positive) were compared to cases with prior spine surgery without implant placement (e.g. micro discectomy) (n = 21, 23.8% positive), revision cases following singular spinal fusion (n = 73, 23.2% positive), and cases with multiple revisions (n = 38, 50.0% positive). Propionibacterium spp. detection rate increased to 80% in positive cases with multiple revisions. Implants in place during revision surgery had a significantly higher infection rate (32.4%) compared to no implant (14.2%, p = 0.007). Positive cases had a significantly higher pain level prior to surgery compared to negative cases (p = 0.019). Laboratory parameters had no predictive value. Logistic regression revealed that previous spinal surgeries (odds ratio [OR] 1.38 per operation, p < 0.001) and male sex (OR 1.15, p = 0.028) were independent predictive factors for infection. CONCLUSIONS Previous spinal surgery is a risk factor for chronic surgery site infection, leading to chronic pain, implant loosening, and revision. The presence of Propionibacterium spp. was correlated with chronic implant loosening and was more likely with cumulative surgeries.
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Affiliation(s)
| | | | | | | | | | | | - Lukas Leitner
- Medical University of Graz, Austria,Lukas Leitner, Department of Orthopedics and Trauma, Medical University of Graz Auenbruggerplatz 5, Graz A-8036, Austria.
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To MS, Di Ubaldo LJ, Wells AJ, Jukes A. Absence of small study effects in neurosurgical meta-analyses: A meta-epidemiological study. J Clin Neurosci 2021; 93:137-140. [PMID: 34656237 DOI: 10.1016/j.jocn.2021.09.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 07/24/2021] [Accepted: 09/04/2021] [Indexed: 12/17/2022]
Abstract
BACKGROUND Small studies are prone to lower methodological quality and publication bias, and are more likely to report greater beneficial effects. A meta-epidemiological study was undertaken to investigate and quantify the impact of small study effects on meta-analyses in the neurosurgical literature. METHODS A PubMed search was used to procure meta-analyses from Journal of Neurosurgery, Neurosurgery, Spine, Acta Neurochirurgica and Journal of Neurotrauma. Outcome data were extracted from meta-analyses the effect of study size was estimated by calculating the ratio of odds ratios (RORs) between small and large studies. RESULTS 16 meta-analyses of 229 primary studies and 90,629 patients were included. All but two included pooled outcomes were significantly different from 1. On average small studies did not demonstrate greater beneficial effects, with an estimated pooled ROR of 1.32 (95% CI, 0.89 to 1.75). Stratification by meta-analysis effect size and heterogeneity yielded similar findings. CONCLUSIONS The absence of small study effects in meta-analyses of neurosurgical studies may reflect widespread poor quality of the neurosurgical literature affecting both large and small studies, rather than an absence of publication bias.
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Affiliation(s)
- Minh-Son To
- College of Medicine and Public Health, Flinders University, Bedford Park, SA, Australia; Division of Surgery and Perioperative Medicine, Flinders Medical Centre, Bedford Park, SA, Australia.
| | - Lucas J Di Ubaldo
- College of Medicine and Public Health, Flinders University, Bedford Park, SA, Australia
| | - Adam J Wells
- Faculty of Health and Medical Sciences, The University of Adelaide, Adelaide, SA, Australia; DDepartment of Neurosurgery, Royal Adelaide Hospital, Adelaide, SA, Australia
| | - Alistair Jukes
- Department of Neurosurgery, Royal Prince Alfred Hospital, Camperdown, NSW, Australia
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18
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Begier E, Rosenthal NA, Richardson W, Chung J, Gurtman A. Invasive Staphylococcus aureus Infection among Patients Undergoing Elective, Posterior, Instrumented Spinal Fusion Surgeries: A Retrospective Cohort Study. Surg Infect (Larchmt) 2021; 23:12-21. [PMID: 34494895 DOI: 10.1089/sur.2021.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Background: Post-surgical invasive Staphylococcus aureus infections among spinal fusion patients are serious complications that can worsen clinical outcomes and increase healthcare utilization. Risk of such infections at the population level remains unknown. This study assessed the post-surgical risk of invasive Staphylococcus aureus infections among patients undergoing elective posterior instrumented spinal fusion surgeries in 129 U.S. hospitals. Patients and Methods: This retrospective cohort study analyzed adult patients ≥18 years of age who underwent thoracolumbar/lumbar and cervical fusion surgeries during 2010 - 2014 using the Premier Healthcare Database, the largest hospital discharge database in the United States. Risks of blood stream infection (BSI), deep or organ/space surgical site infections (SSI) caused by Staphylococcus aureus during 90 and 180 days post-index surgery were estimated. Infections were identified based on positive culture results, related International Classification of Diseases, Ninth Revision (ICD-9) procedure codes, and specific claims information. Results: Among 11,236 patients with thoracolumbar/lumbar fusion, 90- and 180-day BSI/SSI infection risks were higher for multilevel than single level fusion (90-day, 1.52% vs. 1.07%, p = 0.05; 180-day, 1.66% vs. 1.07%, p = 0.014). Among 1,641 patients with cervical fusion, 90- and 180-day BSI/SSI infection risks were also higher in multilevel fusions but not statistically significant (90-day, 1.66% vs. 0.52%, p = 0.350; 180-day, 1.80% vs. 0.51%, p = 0.241). The risk for SSI/BSI was more than twice as high among multilevel thoracolumbar/lumbar fusion patients with more than two comorbidities than those with no comorbidity at both 90-day (2.78% vs. 1.00%, p < 0.05) and 180-day (3.01% vs. 1.10%, p < 0.05). Similar trend without statistical significance was seen in multilevel cervical fusion cohort (90-day, 2.91% vs. 1.25%, p > 0.05; 180-day, 3.88% vs. 1.41%, p > 0.05). Conclusions: The risk of BSI/SSI infection for elective posterior instrumented spinal fusions ranged between 0.5% and 2%. Higher risk was observed in multilevel thoracolumbar/lumbar surgery, with infection risk greatest in patients with more than two comorbidities. These real-world findings highlight the need for additional measures, in addition to antibiotic prophylaxis, to reduce invasive Staphylococcus aureus infections in this setting.
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Affiliation(s)
| | - Ning A Rosenthal
- Premier Applied Sciences, Premier Inc., Charlotte, North Carolina, USA
| | | | - Jessica Chung
- Premier Applied Sciences, Premier Inc., Charlotte, North Carolina, USA
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Kardile MP, Bains SS, Kuo CC, Lincoln TL, Bains RS. Is Propionibacterium acnes becoming the most common bacteria in delayed infections following adolescent idiopathic scoliosis surgery? Spine Deform 2021; 9:757-767. [PMID: 33555598 DOI: 10.1007/s43390-020-00250-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Accepted: 11/03/2020] [Indexed: 12/20/2022]
Abstract
STUDY DESIGN Retrospective review of hospital charts. OBJECTIVE (1) To determine the microbiological profile of patients with surgical site infections following posterior spinal fusion surgery (PSF) for Adolescent Idiopathic scoliosis (AIS). (2) To study the treatment outcome of patients with surgical site infections (SSI) following surgery for AIS. (3) To identify the key differences in presentation and management of acute and delayed SSI following AIS surgery. There has been increasing evidence of the role of P. acnes in deep surgical site infections. Literature related to this is abundant in relation to shoulder arthroplasty; however, it is sparse in relation to spine surgery. METHODS We conducted a retrospective review of all patients treated for AIS during a 5-year period (2010-2014) at our institution, with a minimum of 2-year follow-up after the index surgery. Patients with a postoperative infection following their index surgery were included. Charts of AIS patients with post-op infections were reviewed for details of the index surgery, time to presentation of the infection, presenting signs/symptoms, microbiology details, details of surgical and antibiotic treatment, and outcomes. RESULTS Nine (2.8%) post-op infections were identified out of 315 cases for AIS during this period. Seven (2.2%) involved P. acnes. Two (0.6%) involved MSSA. The average time for cultures to show growth was 6.1 days (range 5-8 days) in P. acnes group and 2-3 days in MSSA group. Patients with P. acnes infections were treated with implant removal, debridement and antibiotics. All patients achieved solid fusion except two patients from the P. acnes group had pseudoarthrosis and had to undergo revision fusion. CONCLUSION Propionibacterium acnes was the single most common bacteria isolated from delayed surgical site infection following PSF in AIS patients. Optimal treatment consists of debridement, implant removal and antibiotics. These patients have high incidence of pseudoarthrosis. LEVEL OF EVIDENCE Level IV.
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Affiliation(s)
- Mayur P Kardile
- Northern California Regional Spine Center, Kaiser Permanente Oakland Medical Center, 3600 Broadway, Suite 15, Oakland, CA, 94611, USA
| | - Sukhraj S Bains
- USC, Keck School of Medicine, 1975 Zonal Ave, Los Angeles, CA, USA
| | - Calvin C Kuo
- Northern California Regional Spine Center, Kaiser Permanente Oakland Medical Center, 3600 Broadway, Suite 15, Oakland, CA, 94611, USA
| | - Todd L Lincoln
- Northern California Regional Spine Center, Kaiser Permanente Oakland Medical Center, 3600 Broadway, Suite 15, Oakland, CA, 94611, USA
| | - Ravi S Bains
- Northern California Regional Spine Center, Kaiser Permanente Oakland Medical Center, 3600 Broadway, Suite 15, Oakland, CA, 94611, USA.
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Abstract
STUDY DESIGN Retrospective case series. OBJECTIVE We sought to identify risk factors associated with surgical site infection (SSI) after posterior long segment spinal fusion (PLSF). SUMMARY OF BACKGROUND DATA Patients who undergo PLSF may be at elevated risk of SSI. Identifying factors associated with SSI in these operations can help risk stratify patients and tailor management. METHODS We analyzed PLSFs-seven or more levels-at our institution from 2000 to 2015. Data on patients' clinical characteristics, procedural factors, and antimicrobial management were collected. Multivariable analysis identified factors independently associated with outcomes of interest. RESULTS In 628 cases, SSI was associated with steroid use (P = 0.024, odds ratio [OR] = 2.54) and using cefazolin (P < 0.001, OR = 4.37) or bacitracin (P = 0.010, OR 3.49) irrigation, as opposed to gentamicin or other irrigation. Gram-positive infections were more likely with staged procedures (P = 0.021, OR 4.91) and bacitracin irrigation (P < 0.001, OR = 17.98), and less likely with vancomycin powder (P = 0.050, OR 0.20). Gram-negative infections were more likely with a history of peripheral arterial disease (P = 0.034, OR = 3.21) or cefazolin irrigation (P < 0.001, OR 25.47). Readmission was more likely after staged procedures (P = 0.003, OR = 3.31), cervical spine surgery (P = 0.023, OR = 2.28), or cefazolin irrigation (P = 0.039, OR = 1.85). Reoperation was more common with more comorbidities (P = 0.022, OR 1.09), staged procedures (P < 0.001, OR = 4.72), cervical surgeries (P = 0.013, OR = 2.36), more participants in the surgery (P = 0.011, OR = 1.06), using cefazolin (P < 0.001, OR = 3.12) or bacitracin (P = 0.009, OR = 3.15) irrigation, and higher erythrocyte sedimentation rate at readmission (P = 0.009, OR = 1.04). Washouts were more likely among patients with more comorbidities (P = 0.013, OR = 1.16), or who used steroids (P = 0.022, OR = 2.92), and less likely after cervical surgery (P = 0.028, OR = 0.24). Instrumentation removal was more common with bacitracin irrigation (p = 0.013, OR = 31.76). CONCLUSION Patient factors, whether a procedure is staged, and choice of antibiotic irrigation affect the risk of SSI and ensuing management required.Level of Evidence: 4.
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Vakayil V, Atkinson J, Puram V, Glover JJ, Harmon JV, Statz CL, Polly DW, Bulander RE. Intrawound vancomycin application after spinal surgery: a propensity score-matched cohort analysis. J Neurosurg Spine 2021:1-11. [PMID: 33668035 DOI: 10.3171/2020.8.spine201129] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Accepted: 08/31/2020] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Surgical site infection (SSI) following spine surgery is associated with increased morbidity and healthcare costs. In an effort to reduce SSI rates, the application of intrawound vancomycin powder has gained popularity. However, there is limited high-quality evidence to support the safety and efficacy of this practice. The authors sought to determine if intrawound application of vancomycin powder improves 90-day overall SSI rates. METHODS The authors performed a retrospective, vancomycin exposure-matched cohort study at a single tertiary care hospital over 21 months. They included all patients undergoing elective spinal surgery and stratified the patients into two groups: those who received intrawound vancomycin powder application and those who received no application of vancomycin powder. The primary outcome of interest was the 90-day overall SSI rate. Secondary outcomes included rates of superficial SSI, deep SSI, wound disruption, and a post hoc analysis of the microbiology and minimum inhibitory concentrations. Baseline patient demographics, clinical presentation, comorbidities, perioperative factors, and 90-day postoperative outcomes were manually abstracted from patient charts. To mitigate bias, we performed 1:1 matching after calculating propensity scores and identified 1 patient from the no-vancomycin cohort for each patient in the vancomycin cohort. RESULTS A total of 997 patients met our inclusion criteria (473 patients receiving vancomycin and 524 patients not receiving vancomycin). Propensity score matching produced 221 matched pairs. Risk-adjusted analysis demonstrated similar overall SSI rates between the groups (OR 1.9, p = 0.329). On unadjusted analysis, the overall 90-day SSI rate was greater in the vancomycin group (n = 10 [4.5%]) than in the no-vancomycin group (n = 5 [2.3%]) (p < 0.001), as were the superficial SSI rate (7 [3.2%] vs 4 [1.8%], p < 0.001), deep SSI rate (3 [1.4%] vs 1 [0.5%], p < 0.001), and wound disruption rate (5 [2.3%] vs 1 [0.5%], p < 0.001). No cultured isolate demonstrated vancomycin resistance. CONCLUSIONS The authors observed no difference in SSI rates after the intrawound application of vancomycin powder during spine surgery. Vancomycin use did not contribute to antimicrobial resistance; however, it may select out gram-negative bacteria and increase rates of wound disruption.
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Affiliation(s)
| | | | | | | | | | | | - David W Polly
- 4Department of Orthopedics, University of Minnesota, Minneapolis, Minnesota
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22
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Mann M, Wright CH, Jella T, Labak CM, Shammassian B, Srivatsa S, Wright J, Engineer L, Sajatovic M, Selman W. Cranial Surgical Site Infection Interventions and Prevention Bundles: A Systematic Review of the Literature. World Neurosurg 2021; 148:206-219.e4. [PMID: 33412319 DOI: 10.1016/j.wneu.2020.12.137] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Accepted: 12/27/2020] [Indexed: 10/22/2022]
Abstract
BACKGROUND Cranial surgical site infections (cSSIs) are associated with significant morbidity. Measures to reduce cSSI are necessary to reduce patient morbidity as well as hospital costs and resource utilization. OBJECTIVE To identify and characterize interventions or bundled interventions aimed at reduction of the incidence of cranial surgical site infections. METHODS A systematic review of the literature was conducted according to the PRISMA guidelines. The search strategy included randomized trials, quasi-experimental studies, cohort studies, and case series published between 2000 and 2020 that evaluated interventions implemented to reduce cSSI. Bias assessments and data extraction were performed on included studies. RESULTS The initial search generated 1249 studies. Application of inclusion and exclusion criteria and review of references yielded 15 single-intervention and 6 bundled-intervention studies. The single interventions included handwashing protocols, use of vancomycin powder, hair washing and clipping practices, and incision closure techniques. Bundled interventions addressed a variety of preoperative, intraoperative, and postoperative changes. Despite a lack of strong evidence to support the adoption of statistically significant interventions, the use of vancomycin powder may be effective in reducing cSSI. In addition, bundled interventions that involved cultural changes, such as increased teaching/education, personal accountability, direct observation, and feedback, showed some success in decreasing SSI rates. CONCLUSIONS The strength of the conclusions is limited by small sample sizes, study heterogeneity, relatively low cSSI incidence, and high case variability. Some evidence supports the use of intraoperative vancomycin powder in adult noncranioplasty cases and the application of accountability, teaching, and surveillance of faculty, particularly those early in training.
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Affiliation(s)
- Michael Mann
- Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
| | - Christina Huang Wright
- Department of Neurological Surgery, University Hospitals Cleveland Medical Center, Cleveland, Ohio, USA; Case Western Reserve University School of Medicine, Cleveland, Ohio, USA.
| | - Tarun Jella
- Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
| | - Collin M Labak
- Department of Neurological Surgery, University Hospitals Cleveland Medical Center, Cleveland, Ohio, USA; Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
| | - Berje Shammassian
- Department of Neurological Surgery, University Hospitals Cleveland Medical Center, Cleveland, Ohio, USA; Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
| | - Shaarada Srivatsa
- Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
| | - James Wright
- Department of Neurological Surgery, University Hospitals Cleveland Medical Center, Cleveland, Ohio, USA; Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
| | - Lilly Engineer
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins Medicine and Department of Health Policy and Management, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA
| | - Martha Sajatovic
- Department of Neurology, and Psychiatry, University Hospitals Cleveland Medical Center, Cleveland, Ohio, USA; Neurological and Behavioral Outcomes Research Center, University Hospitals Cleveland Medical Center, Cleveland, Ohio, USA; Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
| | - Warren Selman
- Department of Neurological Surgery, University Hospitals Cleveland Medical Center, Cleveland, Ohio, USA; Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
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Oktay K, Özsoy KM, Çetinalp NE, Erman T, Güzel A. Efficacy of prophylactic application of vancomycin powder in preventing surgical site infections after instrumented spinal surgery: A retrospective analysis of patients with high-risk conditions. ACTA ORTHOPAEDICA ET TRAUMATOLOGICA TURCICA 2021; 55:48-52. [PMID: 33650511 DOI: 10.5152/j.aott.2021.18372] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
OBJECTIVE This study aimed to determine the efficacy of prophylactic use of vancomycin powder against surgical site infections in patients with high-risk conditions who underwent posterior spinal instrumentation. METHODS Data obtained from 209 patients who underwent posterior spinal instrumentation at a single institution from 2014 to 2017 were retrospectively reviewed. Patients were then divided into two groups: control group, including 107 patients (61 females, 46 males; mean age=54 years; age range=16-85 years), and treatment group, including 102 patients (63 females, 39 males; mean age=53 years; age range=14-90 years). All patients received the same standard prophylactic antibiotic regimen. In addition to the prophylactic antibiotic, vancomycin powder was applied locally to the surgical site in the treatment group. All patients were followed up for at least 90 days postoperatively. Infections were categorized as superficial and deep infections. Subgroup analysis of high-risk patients (Syrian refugees) was also performed. RESULTS The infection rates were 1.96% (two patients) in the treatment group and 6.54% (seven patients) in the control group. A significant decrease in the infection rates was observed with local vancomycin powder application. Advanced age (>46 years) and prolonged surgical duration (>140 min) were found to be the main risk factors for surgical site infections (p=0.004 and p=0.028, respectively). The infection rates were 3.22% and 8.11% in the treatment and control groups of refugees, respectively. There were three superficial and four deep infections in the control group and one superficial and one deep infection in the treatment group. A dominance of staphylococcus infections was observed in the control group, whereas no significant dominance was observed in the treatment group. Three patients in the control group and one patient in the treatment group received implant removal. CONCLUSION Evidence from this study has revealed that local application of vancomycin powder reduces the rate of surgical site infections after instrumented spinal surgery. The benefit of vancomycin application may be most appreciated in higher risk populations or in clinics with high baseline rates of infection. LEVEL OF EVIDENCE Level III, Therapeutic Study.
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Affiliation(s)
- Kadir Oktay
- Department of Neurosurgery, Çukurova University, School of Medicine, Adana, Turkey
| | - Kerem Mazhar Özsoy
- Department of Neurosurgery, Çukurova University, School of Medicine, Adana, Turkey
| | - Nuri Eralp Çetinalp
- Department of Neurosurgery, Çukurova University, School of Medicine, Adana, Turkey
| | - Tahsin Erman
- Department of Neurosurgery, Çukurova University, School of Medicine, Adana, Turkey
| | - Aslan Güzel
- Department of Neurosurgery, Bahçeşehir University, School of Medicine, İstanbul, Turkey
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Farah K, Lubiato A, Meyer M, Prost S, Ognard J, Blondel B, Fuentes S. Surgical site infection following surgery for spinal deformity: About 102 patients. Neurochirurgie 2020; 67:152-156. [PMID: 33157123 DOI: 10.1016/j.neuchi.2020.10.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 09/07/2020] [Accepted: 10/23/2020] [Indexed: 11/17/2022]
Abstract
INTRODUCTION Complex spinal surgery is known to be at risk of complications. Surgical site infection is a serious complication in spine surgery and its frequency is significantly increased in adult spinal deformity correction. The aim of this study is to identify patients' characteristics and risk factors of surgical site infection (SSI) following an osteotomy. METHODS This is a single-center retrospective study of patients who underwent an osteotomy between January 2015 and December 2017. Surgical site infection diagnosis was based upon patient's clinical evidence of infection, biologic parameters, microbiological criteria and/or image findings. RESULTS In total, 102 patients were eligible and 70 were women (68.6%). Mean age was 65 years old (27-83 years) and mean body mass index (BMI) was 26.14kg.m-2 (18.4-44.1). Eleven patients were in the SSI group and 91 in the No-SSI group. The mean Schwab grade was 1.5 (1-4) in the SSI group vs. 1.4 (1-5) in the No-SSI group (P=0.435). The mean operative time was on 201.9 minutes (67-377). Mean length of stay was 20.6 days (10-73) in the SSI group vs. 15 days (5-44) in the No-SSI group (P=0.041). Favorable outcome was found in 10 patients (90.9%) in the SSI group. CONCLUSION Correction surgery for adult spinal deformity with osteotomies carries a high risk of complications specially SSI. Identification of risk factors, prevention and medical management of SSI should be well assessed.
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Affiliation(s)
- K Farah
- Department of neurosurgery, assistance publique des hôpitaux de Marseille, La Timone university hospital, Marseille, France; Spine Unit, assistance publique des hôpitaux de Marseille, La Timone university hospital, Marseille, France.
| | - A Lubiato
- Department of neurosurgery, CHRU de Brest, Brest, France
| | - M Meyer
- Department of neurosurgery, assistance publique des hôpitaux de Marseille, La Timone university hospital, Marseille, France; Spine Unit, assistance publique des hôpitaux de Marseille, La Timone university hospital, Marseille, France
| | - S Prost
- Department of neurosurgery, assistance publique des hôpitaux de Marseille, La Timone university hospital, Marseille, France; Department of orthopedic surgery, assistance publique des hôpitaux de Marseille, La Timone university hospital, Marseille, France
| | - J Ognard
- Department of neurosurgery, CHRU de Brest, Brest, France
| | - B Blondel
- Department of neurosurgery, assistance publique des hôpitaux de Marseille, La Timone university hospital, Marseille, France; Department of orthopedic surgery, assistance publique des hôpitaux de Marseille, La Timone university hospital, Marseille, France
| | - S Fuentes
- Department of neurosurgery, assistance publique des hôpitaux de Marseille, La Timone university hospital, Marseille, France; Spine Unit, assistance publique des hôpitaux de Marseille, La Timone university hospital, Marseille, France
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Isguven S, Chung PH, Machado P, Delaney LJ, Chen AF, Forsberg F, Hickok NJ. Minimizing Penile Prosthesis Implant Infection: What Can We Learn From Orthopedic Surgery? Urology 2020; 146:6-14. [PMID: 32991908 DOI: 10.1016/j.urology.2020.08.060] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 08/15/2020] [Accepted: 08/17/2020] [Indexed: 11/18/2022]
Abstract
The implantation of penile protheses for the surgical treatment of erectile dysfunction has risen in popularity over the past several decades. Considerable advances have been made in surgical protocol and device design, specifically targeting infection prevention. Despite these efforts, device infection remains a critical problem, which causes significant physical and emotional burden to the patient. The aim of this review is to broaden the discussion of best practices by not only examining practices in urology, but additionally delving into the field of orthopedic surgery to identify techniques and approaches that may be applied to penile prothesis surgery.
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Affiliation(s)
- Selin Isguven
- Department of Orthopaedic Surgery, Thomas Jefferson University Philadelphia, Philadelphia, PA; Department of Radiology, Thomas Jefferson University Philadelphia, Philadelphia, PA
| | - Paul H Chung
- Department of Urology, Thomas Jefferson University Philadelphia, Philadelphia, PA.
| | - Priscilla Machado
- Department of Radiology, Thomas Jefferson University Philadelphia, Philadelphia, PA
| | - Lauren J Delaney
- Department of Radiology, Thomas Jefferson University Philadelphia, Philadelphia, PA
| | - Antonia F Chen
- Department of Orthopaedic Surgery, Brigham & Women's Hospital, Boston, MA
| | - Flemming Forsberg
- Department of Radiology, Thomas Jefferson University Philadelphia, Philadelphia, PA
| | - Noreen J Hickok
- Department of Orthopaedic Surgery, Thomas Jefferson University Philadelphia, Philadelphia, PA
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Park HY, Hegde V, Zoller SD, Sheppard W, Hamad C, Smith RA, Sprague MM, Proal JD, Hoang J, Loftin A, Blumstein G, Burke Z, Cevallos N, Scaduto AA, Bernthal NM. Progress not panacea: vancomycin powder efficacy and dose evaluated in an in vivo mouse model of spine implant infection. Spine J 2020; 20:973-980. [PMID: 31863932 PMCID: PMC7351246 DOI: 10.1016/j.spinee.2019.12.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 12/12/2019] [Accepted: 12/13/2019] [Indexed: 02/03/2023]
Abstract
BACKGROUND Intrawound vancomycin powder (VP) has been rapidly adopted in spine surgery with apparent benefit demonstrated in limited, retrospective studies. Randomized trials, basic science, and dose response studies are scarce. PURPOSE This study aims to test the efficacy and dose effect of VP over an extended time course within a randomized, controlled in vivo animal experiment. STUDY DESIGN/SETTING Randomized controlled experiment utilizing a mouse model of spine implant infection with treatment groups receiving vancomycin powder following bacterial inoculation. METHODS Utilizing a mouse model of spine implant infection with bioluminescent Staphylococcus aureus, 24 mice were randomized into 3 groups: 10 infected mice with VP treatment (+VP), 10 infected mice without VP treatment (No-VP), and 4 sterile controls (SC). Four milligrams of VP (mouse equivalent of 1 g in a human) were administered before wound closure. Bioluminescence imaging was performed over 5 weeks to quantify bacterial burden. Electron microscopy (EM), bacterial colonization assays (Live/Dead) staining, and colony forming units (CFU) analyses were completed. A second dosing experiment was completed with 34 mice randomized into 4 groups: control, 2 mg, 4 mg, and 8 mg groups. RESULTS The (+VP) treatment group exhibited significantly lower bacterial loads compared to the control (No-VP) group, (p<.001). CFU analysis at the conclusion of the experiment revealed 20% of mice in the +VP group and 67% of mice in the No-VP group had persistent infections, and the (+VP) treatment group had significantly less mean number of CFUs (p<.03). EM and Live/Dead staining revealed florid biofilm formation in the No-VP group. Bioluminescence was suppressed in all VP doses tested compared with sterile controls (p<.001). CFU analysis revealed a 40%, 10%, and 20% persistent infection rate in the 2 mg, 4 mg, and 8 mg dose groups, respectively. CFU counts across dosing groups were not statistically different (p=.56). CONCLUSIONS Vancomycin powder provided an overall infection prevention benefit but failed to eradicate infection in all mice. Furthermore, the dose when halved also demonstrated an overall protective benefit, albeit at a lower rate. CLINICAL SIGNIFICANCE Vancomycin powder is efficacious but should not be viewed as a panacea for perioperative infection prevention. Dose alterations can be considered, especially in patients with kidney disease or at high risk for seroma.
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Affiliation(s)
- Howard Y Park
- Department of Orthopaedic Surgery, University of California, Los Angeles, Los Angeles, CA, USA
| | - Vishal Hegde
- Department of Orthopaedic Surgery, University of California, Los Angeles, Los Angeles, CA, USA
| | - Stephen D Zoller
- Department of Orthopaedic Surgery, University of California, Los Angeles, Los Angeles, CA, USA
| | - William Sheppard
- Department of Orthopaedic Surgery, University of California, Los Angeles, Los Angeles, CA, USA
| | - Christopher Hamad
- Department of Orthopaedic Surgery, University of California, Los Angeles, Los Angeles, CA, USA
| | - Ryan A Smith
- Department of Orthopaedic Surgery, University of California, Los Angeles, Los Angeles, CA, USA
| | - Marina M Sprague
- Department of Orthopaedic Surgery, University of California, Los Angeles, Los Angeles, CA, USA
| | - Joshua D Proal
- Department of Orthopaedic Surgery, University of California, Los Angeles, Los Angeles, CA, USA
| | - John Hoang
- Department of Orthopaedic Surgery, University of California, Los Angeles, Los Angeles, CA, USA
| | - Amanda Loftin
- Department of Orthopaedic Surgery, University of California, Los Angeles, Los Angeles, CA, USA
| | - Gideon Blumstein
- Department of Orthopaedic Surgery, University of California, Los Angeles, Los Angeles, CA, USA
| | - Zachary Burke
- Department of Orthopaedic Surgery, University of California, Los Angeles, Los Angeles, CA, USA
| | - Nicolas Cevallos
- Department of Orthopaedic Surgery, University of California, Los Angeles, Los Angeles, CA, USA
| | - Anthony A Scaduto
- Department of Orthopaedic Surgery, University of California, Los Angeles, Los Angeles, CA, USA; Orthopaedic Institute for Children, Los Angeles, CA, USA
| | - Nicholas M Bernthal
- Department of Orthopaedic Surgery, University of California, Los Angeles, Los Angeles, CA, USA; Orthopaedic Institute for Children, Los Angeles, CA, USA.
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Abstract
In July of 2018, the Second International Consensus Meeting (ICM) on Musculoskeletal Infection convened in Philadelphia, PA was held to discuss issues regarding infection in orthopedic patients and to provide consensus recommendations on these issues to practicing orthopedic surgeons. During this meeting, attending delegates divided into subspecialty groups to discuss topics specifics to their respective fields, which included the spine. At the spine subspecialty group meeting, delegates discussed and voted upon the recommendations for 63 questions regarding the prevention, diagnosis, and treatment of infection in spinal surgery. Of the 63 questions, 17 focused on the use of antibiotics in spine surgery, for which this article provides the recommendations, voting results, and rationales.
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Atesok K, Papavassiliou E, Heffernan MJ, Tunmire D, Sitnikov I, Tanaka N, Rajaram S, Pittman J, Gokaslan ZL, Vaccaro A, Theiss S. Current Strategies in Prevention of Postoperative Infections in Spine Surgery. Global Spine J 2020; 10:183-194. [PMID: 32206518 PMCID: PMC7076595 DOI: 10.1177/2192568218819817] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
STUDY DESIGN Narrative review. OBJECTIVES Postoperative surgical site infections (SSIs) are among the most common acute complications in spine surgery and have a devastating impact on outcomes. They can lead to increased morbidity and mortality as well as greater economic burden. Hence, preventive strategies to reduce the rate of SSIs after spine surgery have become vitally important. The purpose of this article was to summarize and critically analyze the available evidence related to current strategies in the prevention of SSIs after spine surgery. METHODS A literature search utilizing Medline database was performed. Relevant studies from all the evidence levels have been included. Recommendations to decrease the risk of SSIs have been provided based on the results from studies with the highest level of evidence. RESULTS SSI prevention occurs at each phase of care including the preoperative, intraoperative, and postoperative periods. Meticulous patient selection, tight glycemic control in diabetics, smoking cessation, and screening/eradication of Staphylococcus aureus are some of the main preoperative patient-related preventive strategies. Currently used intraoperative measures include alcohol-based skin preparation, topical vancomycin powder, and betadine irrigation of the surgical site before closure. Postoperative infection prophylaxis can be performed by administration of silver-impregnated or vacuum dressings, extended intravenous antibiotics, and supplemental oxygen therapy. CONCLUSIONS Although preventive strategies are already in use alone or in combination, further high-level research is required to prove their efficacy in reducing the rate of SSIs in spine surgery before evidence-based standard infection prophylaxis guidelines can be built.
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Affiliation(s)
- Kivanc Atesok
- University of Alabama at Birmingham, AL, USA,Harvard Medical School, Beth Israel Deaconess Medical Center, Boston, MA, USA,Kivanc Atesok, Department of Neurosurgery Spine Program, Beth Israel Deaconess Medical Center, Harvard University, 110 Francis Street, Boston, MA 02215, USA.
| | | | - Michael J. Heffernan
- Children’s Hospital of New Orleans, LSU Health Science Center, New Orleans, LA, USA
| | | | - Irina Sitnikov
- International Center for Minimally Invasive Spine Surgery, Wyckoff, NJ, USA
| | | | | | | | - Ziya L. Gokaslan
- Brown University, Providence, RI, USA,Rhode Island Hospital, Providence, RI, USA
| | - Alexander Vaccaro
- Thomas Jefferson University, The Rothman Institute, Philadelphia, PA, USA
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Complexities of spine surgery in obese patient populations: a narrative review. Spine J 2020; 20:501-511. [PMID: 31877389 PMCID: PMC7136130 DOI: 10.1016/j.spinee.2019.12.011] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 12/17/2019] [Accepted: 12/18/2019] [Indexed: 02/03/2023]
Abstract
The obese population is particularly challenging to the spine surgeon in all phases of care. A narrative literature review was performed to review difficulties in spine surgery on the obese patient population and techniques for mitigation. We specifically aimed to assess several topics with regard to this population: patient selection and preoperative care; intraoperative and surgical techniques; and postoperative care, outcomes, and complications. The literature review demonstrated that obese patients are at increased surgical risk with spine surgery due to a variety of factors at all stages of intervention. Preoperatively, obese patients have worse outcomes with physical therapy and present technical difficulties for injections. Transport to a hospital, imaging, resuscitation, and intubation are all challenged by increased body habitus. Intraoperatively, obese patients have increased operative times, blood loss, surgical site infections, and nerve palsies. Patient positioning and intraoperative imaging may be limited. Surgery itself may be technically challenging due to body habitus and minimally invasive techniques are becoming more prevalent in this population. Postoperatively, several studies demonstrate that obese patients have inferior outcomes compared with nonobese counterparts. Patient selection is a key for elective interventions, and appropriate infrastructure aids in the ultimate outcomes for both elective and nonelective surgical treatments. Overall, obese patients present several challenges to the spine surgeon, and certain precautions can be undertaken preoperatively, intraoperatively, and postoperatively to mitigate the associated risks to optimize outcomes.
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Aleem IS, Tan LA, Nassr A, Riew KD. Infection prevention in cervical spine surgery. JOURNAL OF SPINE SURGERY 2020; 6:334-339. [PMID: 32309670 DOI: 10.21037/jss.2020.01.13] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Surgical site infections (SSI) following cervical spine surgery can lead to significant patient morbidity and costs. Prevention of SSIs is multifactorial and can be divided in to preoperative patient optimization and intraoperative surgical factors. We performed a literature review to identify methods that can be used to prevent SSI development specifically in the cervical spine. We also present specific surgical pearls and techniques that have the potential to significantly decrease rates of cervical SSIs.
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Affiliation(s)
- Ilyas S Aleem
- Department of Orthopaedic Surgery, University of Michigan, Ann Arbor, MI, USA
| | - Lee A Tan
- Department of Neurosurgery, University of California, San Francisco, CA, USA
| | - Ahmad Nassr
- Department of Orthopaedic Surgery, Mayo Clinic, Rochester, MN, USA
| | - K Daniel Riew
- Department of Orthopaedic Surgery, Columbia University Medical Center, New York, NY, USA
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Do Prophylactic Antibiotics Reach the Operative Site Adequately?: A Quantitative Analysis of Serum and Wound Concentrations of Systemic and Local Prophylactic Antibiotics in Spine Surgery. Spine (Phila Pa 1976) 2020; 45:E196-E202. [PMID: 31490860 DOI: 10.1097/brs.0000000000003238] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
STUDY DESIGN Prospective cohort study. OBJECTIVE To analyze the serum and drain concentrations of antibiotics administered by two different routes and compare the results. SUMMARY OF BACKGROUND DATA Systemic antibiotics are expected to reach the surgical site and maintain adequate concentrations of the drug to prevent infection. However, it is unknown whether systemically administered antibiotics reach and maintain such adequate concentrations at the surgical wound or not. METHODS Forty patients undergoing elective spine surgery received intra-wound Vancomycin (1 GM) before the wound closure and single dose of intravenous Gentamycin (80MG) immediately after surgery. Blood and drain samples were collected postoperatively to estimate serum and drain concentrations of Gentamycin and Vancomycin. Drug Estimation Protocol: Drug concentrations were estimated by ADVIA Centaur CP immunoassay (direct chemiluminescence). Gentamycin and vancomycin in the test samples competes with their respective acridinium ester-labeled gentamicin and vancomycin derivatives for monoclonal mouse anti-gentamycin and anti-vancomycin antibodies which are covalently coupled to paramagnetic particles in the solid phase. RESULTS Gentamycin attained peak serum levels at 6 hours following administration with an average value of 9.90 ± 3.1 μg/mL which was decreased to 6.76 ± 2.6 μg/mL at 12 hours and steadily declining thereafter. Even though, the drug concentrations in the drain collection from the wound also attained peak levels at 6 hours, the drug concentrations were lower (3.75 ± 1.4 μg/mL) than that of serum concentrations and inadequately attained the recommended target peak of Gentamycin (4-12 μg/mL).Wound levels of local vancomycin were significantly higher at 6 hours (413.4 ± 217.3 μg/mL) and well maintained even at 72 hours. Serum vancomycin levels were observed to be highest at 6 hours in negligible concentrations of 6.06 ± 2.2 μg/mL. CONCLUSION After prophylactic systemic administration of the antibiotics, the antibiotic drug concentrations in the wound are much lower than the serum concentrations at any given time. After local intra-wound application of antibiotics, the drug concentrations in the wound are well maintained even after 72 hours. LEVEL OF EVIDENCE 3.
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Abstract
BACKGROUND The utility of vancomycin powder to prevent surgical site infection, mainly in spinal surgery, has been widely examined, and the local administration of vancomycin powder to wounds has been reported to be effective in preventing surgical site infections after spine surgery. However, in vitro studies have shown that high local concentrations of vancomycin may inhibit osteogenesis, although it remains unclear how these high concentrations influence osteoblasts. No candidate drug has been reported to recover cytotoxicity with high concentrations of vancomycin, but we suggest that vitamin D3, which induces osteoblast proliferation, may be administrated concomitantly with vancomycin in these situations. QUESTIONS/PURPOSES (1) Does a high concentration of vancomycin reduce viable osteoblast numbers in cell culture compared with controls? (2) Does vitamin D3 administration confer a protective effect on osteoblasts when administered with continuous vancomycin? (3) Does vitamin D3 administration confer a protective effect on osteoblasts when administered with pulsed vancomycin (24 hours of administration)? (4) Does vitamin D3 administration confer alkaline phosphatase, mineralization, and gene expression when administered with pulsed vancomycin? METHODS MC3T3-E1 cells were cultured at 37° C in an α-minimum essential medium supplemented with 10% fetal bovine serum in a humidified incubator containing 5% CO2. The experimental concentrations of vancomycin (2500 μg/mL, 5000 μg/mL, and 7500 μg/mL) were determined based on previous reports and preliminary experiments. We concomitantly administered vitamin D3 (0.01 nM) to prevent cytotoxicity in osteoblasts, using two different treatments: continuous vancomycin administration (measured at 6 hours, 12 hours, 24 hours, and 72 hours) and pulsed vancomycin for 24 hours (measured at 1 days, 3 days, and 7 days). We analyzed cell numbers and morphologic changes in cells treated with vancomycin or vancomycin plus 0.01 nM vitamin D3. Osteoblast differentiation was assessed with alkaline phosphatase staining, alkaline phosphatase activity, and Alizarin red S staining. RESULTS The number of cells was reduced at 6 hours, 24 hours, 48 hours, and 72 hours in response to continuous vancomycin administration at 7500 µg/mL (at 72 hours, control 14.6 × 10 cells/mL ± 0.260 × 10 cells/mL, vancomycin at 0.917 × 10 cells/mL ± 0.288 × 10 cells/mL, mean difference -13.7 × 10 cells/mL ± 0.388 × 10 cells/mL [95% CI -14.5 to -12.9]; p < 0.001). Vitamin D3 did not have a protective effect when vancomycin was administered continuously at 7500 µg/mL (at 72 hours, vancomycin alone 0.917 × 10 cells/mL ± 0.288 × 10 cells/mL, vancomycin + vitamin D3 1.67 × 10 cells/mL ± 0.310 × 10 cells/mL, mean difference 0.75 × 10 cells/mL ± 0.423 × 10 cells/mL [95% CI -0.127 to 1.63]; p = 0.09).With pulsed administration for only the first 24 hours, the number of cells was reduced at 1 day, 3 days, and 7 days at 7500 μg/mL (at 7 days, control 18.6 × 10 cells/mL ± 1.29 × 10 cells/mL, vancomycin at 3.46 × 10 cells/mL ± 0.292 × 10 cells/mL, mean difference -15.1 × 10 cells/mL ±1.33 × 10 cells/mL [95% CI -17.9 to -12.4]; p < 0.001 for all). However, vitamin D3 had a recovery effect when vancomycin was administered only for 24 hours (cell number with 7500 μg/mL, day 7: vancomycin alone 3.46 × 10 cells/mL ± 0.292 × 10 cells/mL, vancomycin +vitamin D3 10.6 × 10 cells/mL ± 0.900 × 10 cells/mL, mean difference 7.13 × 10 cells/mL ± 0.946 × 10 cells/mL [95% CI 5.16 to 9.09]; p < 0.001).With the addition of vitamin D3, we observed recovery of alkaline phosphatase staining and Alizarin red staining (evidence of calcification) but no difference in the gene expression of Type I collagen (vancomycin alone 0.319 ± 0.0730, vancomycin + vitamin D3 0.511 ± 0.139, mean difference 0.192 ± 0.157 [95% CI -0.483 to 0.867]; p = 0.345), alkaline phosphatase (vancomycin alone 0.532 ± 0.0210, vancomycin + vitamin D3 0.785 ± 0.0590, mean difference 0.253 ± 0.0620 [95% CI -0.0150 to 0.521]; p = 0.0550), and cathelicidin antimicrobial peptide (vancomycin alone 0.885 ± 0.0520, vancomycin + vitamin D3 1.24 ± 0.125, mean difference 0.355 ± 0.135 [95% CI -0.0200 to 0.730]; p = 0.0580). CONCLUSION We found that 7500 µg/mL of vancomycin is cytotoxic to osteoblasts. Cytotoxicity could be prevented by administering vitamin D3 in combination with vancomycin. CLINICAL RELEVANCE The high concentrations of vancomycin routinely used clinically raises concerns related to osteoblast cytotoxicity, which may contribute to pseudoarthrosis after spinal surgery. Thus, vitamin D3, which is frequently used to treat osteoporosis, may have efficacy as a concomitantly administered drug by inducing the proliferation of osteoblasts. These results indicate that a combination therapy of vancomycin and vitamin D3 may prevent adverse events such as osteoblast cytotoxicity.
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Abstract
STUDY DESIGN A systematic review and meta-analysis. OBJECTIVE The objective of this study was to investigate the incidence of surgical site infection (SSI) in patients following spine surgery and the rate of microorganisms in these cases. SUMMARY OF BACKGROUND DATA Many studies have investigated the incidence and risk factors of SSI following spinal surgery, whereas no meta-analysis studies have been conducted regarding the comprehensive epidemiological incidence of SSI after spine surgery. METHODS We searched the PubMed, Embase, and Cochrane Library databases for relevant studies that reported the incidence of SSI after spine surgery, and manually screened reference lists for additional studies. Relevant incidence estimates were calculated. Subgroup analysis, sensitivity analysis, and publication bias assessment were also performed. RESULTS Our meta-analysis included 27 studies, with 603 SSI cases in 22,475 patients. The pooled SSI incidence was 3.1%. Subgroup analysis revealed that the incidence of superficial SSI was 1.4% and the incidence of deep SSI was 1.7%. Highest incidence (13.0%) was found in patients with neuromuscular scoliosis among the different indications. The incidences of SSI in cervical, thoracic, and lumbar spine were 3.4%, 3.7%, and 2.7%, respectively. Compared with posterior approach surgery (5.0%), anterior approach showed a lower incidence (2.3%) of SSI. Instrumented surgery had a higher incidence of SSI than noninstrumented surgery (4.4% vs. 1.4%). Patients with minimally invasive surgery (1.5%) had a lower SSI incidence than open surgery (3.8%). Lower incidence of SSI was found when vancomycin powder was applied locally during the surgery (1.9%) compared with those not used (4.8%). In addition, the rates of Staphylococcus aureus, Staphylococcus epidermidis, and methicillin-resistant Staphylococci in microbiological culture results were 37.9%, 22.7%, and 23.1%, respectively. CONCLUSION The pooled incidence of SSI following spine surgery was 3.1%. These figures may be useful in the estimation of the probability of SSI following spine surgery. LEVEL OF EVIDENCE 3.
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Daldal I, Senkoylu A. Strategies of management of deep spinal infection: from irrigation and debridement to vacuum-assisted closure treatment. ANNALS OF TRANSLATIONAL MEDICINE 2020; 8:33. [PMID: 32055624 DOI: 10.21037/atm.2019.11.60] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Postoperative surgical site problems (PSSPs) following spinal surgery may lead to patient mortality, increased treatment costs and possible recurrent medical interventions. Despite efforts to reduce spinal surgery-related infection rates, complications are common and significantly increased by patient comorbidities. Since PSSPs occur regardless of deterrent measures, it is essential to distinguish the related risk factors. Different treatment conventions for PSSPs, for example, antibiotic treatment, debridement, soft tissue care and removal of implants have been prescribed with blended outcomes. The utilization of the wound vacuum-assisted closure (VAC) system has gained increasing popularity in the management of deep wound infections after deformity surgery.
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Affiliation(s)
- Ismail Daldal
- Department of Orthopaedics and Traumatology, Lokman Hekim Akay Hospital, Ankara, Turkey
| | - Alpaslan Senkoylu
- Department of Orthopaedics and Traumatology, Gazi University, Ankara, Turkey
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Shin DW, Sohn MJ, Cho CR, Koo HW, Yoon SW. Evaluation of Cumulative and Conditional Antibiotic Release from Vancomycin-Embedded Fibrin Sealant and Its Antibacterial Activity : An In Vitro Study. J Korean Neurosurg Soc 2020; 63:45-55. [PMID: 31916426 PMCID: PMC6952731 DOI: 10.3340/jkns.2019.0161] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Accepted: 08/27/2019] [Indexed: 02/02/2023] Open
Abstract
Objective
Fibrin sealants have been used for hemostasis, sealant for cerebrospinal fluid leakage, and adhesive barrier in neurosurgery. Further, as its clinical use and role of an effective drug delivery vehicle have been proposed. This study was performed to measure antibacterial activity and continuous local antibiotic release from different concentrations of vancomycin-impregnated fibrin sealant in vitro.
Methods
Antibacterial activity was investigated by disk diffusion test by measuring the diameter of the growth inhibition zone of bacteria (methicillin-resistant Staphylococcus aureus, ATCC29213) from vancomycin-embedded fibrin sealant disc diluted at five different concentrations (C1–C5; 8.33, 4.167, 0.83, 0.083, and 0.0083 mg/disc, respectively). Continuous and conditioned release of vancomycin concentration (for 2 weeks and for 5 days, respectively) were also measured using high-performance liquid chromatography (HPLC) method. To mimic the physiologic wound conditions with in vitro, conditioned vancomycin release in phosphate buffer solution (PBS) was measured and replaced PBS for five consecutive days, half a day or completely daily.
Results
In the disk diffusion test, the mean diameters of bacterial inhibition zone were 2.54±0.07 cm, 2.61±0.12 cm, and 2.13±0.15 cm (C1, C2, and C3 respectively) but 1.67±0.06 cm and 1.23±0.15 cm in C4 and C5, respectively. Continuous elution test elicited the peak release of vancomycin from the fibrin sealant at 48 hours, with continued release until 2 weeks. However, conditioned vancomycin release decreased to half or more on day 2, however, the sustainable release was measured over the therapeutic dose (10–20 μg/mL) for 5 days and 4 days in assays of half and total exchange of PBS.
Conclusion
This study suggests that fibrin sealant can provide an efficient vehicle for antibiotic drug release in a wide range of neurosurgical procedures and the safe and effective therapeutic dose will be at the concentration embedded of 4.167 mg/disc or more of vancomycin.
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Abstract
STUDY DESIGN Literature review. OBJECTIVES Surgical site infection (SSI) following spine surgery leads to significant patient morbidity, mortality, and increased health care costs. The purpose of this article is to identify risk factors and strategies to prevent SSIs following spine surgery, with particular focus on avoiding infections in posterior cervical surgery. METHODS We performed a literature review and synthesis to identify methods that can be used to prevent the development of SSI following spine surgery. Specific pearls for preventing infection in posterior cervical spine surgery are also presented. RESULTS SSI prevention can be divided into patient and surgeon factors. Preoperative patient factors include smoking cessation, tight glycemic control, weight loss, and nutrition optimization. Surgeon factors include screening and treatment for pathologic microorganisms, skin preparation using chlorhexidine and alcohol, antimicrobial prophylaxis, hand hygiene, meticulous surgical technique, frequent irrigation, intrawound vancomycin powder, meticulous multilayered closure, and use of closed suction drains. CONCLUSION Prevention of SSI following spine surgery is multifactorial and begins with careful patient selection, preoperative optimization, and meticulous attention to numerous surgical factors. With careful attention to various patient and surgeon factors, it is possible to significantly reduce SSI rates following spine surgery.
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Affiliation(s)
- Ilyas S. Aleem
- University of Michigan, Ann Arbor, MI, USA,Ilyas Aleem, Department of Orthopaedic Surgery, 1500 East Medical Center Drive, Ann Arbor, MI 48109, USA.
| | - Lee A. Tan
- University of California, San Francisco, CA, USA
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Lin ZX, Steed LL, Marculescu CE, Slone HS, Woolf SK. Cutibacterium acnes Infection in Orthopedics: Microbiology, Clinical Findings, Diagnostic Strategies, and Management. Orthopedics 2020; 43:52-61. [PMID: 31958341 DOI: 10.3928/01477447-20191213-02] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Accepted: 09/30/2019] [Indexed: 02/03/2023]
Abstract
Cutibacterium (formerly called Propionibacterium) acnes is a human skin flora often implicated in orthopedic infections. The unique characteristics of this microorganism make the diagnosis of infection difficult. The diagnosis often is made based on clinical evidence, radiographic signs, and laboratory and/or surgical findings combined. Treatment often involves both pharmacologic and surgical methods. In addition, formation of biofilms and increased resistance to drugs exhibited by the microorganism can require combined antimicrobial therapy. Prophylactic measures are particularly important, but no single method has been shown to fully eliminate the risk of C acnes infections. Previous reports have focused on C acnes infections involving surgical implants or after certain orthopedic procedures, particularly in the shoulder and spine. This article reviews current clinical, diagnostic, and treatment principles for C acnes in orthopedics in general. [Orthopedics. 2020; 43(1):52-61.].
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Sun W, Gao JH, Zhu LG, Xiao W, Wang ZZ, Yang KX, Zhang Q, Wang BJ. Compression therapy following posterior lumbar interbody fusion: a prospective, randomized, clinical study. BMC Surg 2019; 19:161. [PMID: 31690303 PMCID: PMC6833233 DOI: 10.1186/s12893-019-0612-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2019] [Accepted: 09/20/2019] [Indexed: 11/25/2022] Open
Abstract
Background Wound-related complications are an inevitable issue faced by spinal surgeons. Negative pressure drainage remains the most commonly used method to prevent postoperative hematoma and related complications. This prospective, randomized, controlled study was conducted to evaluate the efficacy of compression therapy following posterior lumbar interbody fusion, with emphasis on pain, anemia, and inflammation. Methods Sixty consecutive patients who have undergone posterior lumbar interbody fusion in the age range 43–78 years, with an average age of 59 years, were selected and randomly assigned into two groups. Factors, such as drainage volume, visual analog scale (VAS) pain score for back pain, white blood cell (WBC) count, red blood cell (RBC) count, hemoglobin (Hb) levels, erythrocyte sedimentation rate (ESR), and C-reactive protein (CRP) levels assessed on the 1st, 3rd, and 10th days postoperatively, were compared between the two groups. Results The average follow-up was 6 months, ranging from 3 to 11 months. Drainage volume, VAS score, and CRP levels on the 10th day after the surgery were found to be significantly lower in the treatment group than in the control group. RBC count and Hb levels on the 3rd and 10th postoperative days were observed to be significantly higher in the treatment group than in the control group (P < 0.05). During discharge, the wounds of the patients of the both groups had healed and neither showed any symptoms of infection, hematoma, or necrosis. Conclusion Compression therapy relieves pain, alleviates anemia, and the inflammatory response following posterior lumbar interbody fusion. Trial registration ChiCTR1800015825 on chictr.org.cn, April 23, 2018, the trial registry is Chinese Clinical Trial Registry.
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Affiliation(s)
- Wu Sun
- Spine Department 2, Wangjing Hospital, China Academy of Chinese Medical Sciences, Beijing, 100102, People's Republic of China
| | - Jing-Hua Gao
- Spine Department 2, Wangjing Hospital, China Academy of Chinese Medical Sciences, Beijing, 100102, People's Republic of China
| | - Li-Guo Zhu
- Spine Department 2, Wangjing Hospital, China Academy of Chinese Medical Sciences, Beijing, 100102, People's Republic of China.
| | - Wei Xiao
- State Key Laboratory of Pharmaceutical New-Tech for Chinese Medicine, Jiangsu Kanion Pharmaceutical Co. Ltd., Lianyungang, 222001, People's Republic of China
| | - Zhen-Zhong Wang
- State Key Laboratory of Pharmaceutical New-Tech for Chinese Medicine, Jiangsu Kanion Pharmaceutical Co. Ltd., Lianyungang, 222001, People's Republic of China
| | - Ke-Xin Yang
- Spine Department 2, Wangjing Hospital, China Academy of Chinese Medical Sciences, Beijing, 100102, People's Republic of China
| | - Qing Zhang
- Spine Department 2, Wangjing Hospital, China Academy of Chinese Medical Sciences, Beijing, 100102, People's Republic of China
| | - Bao-Jian Wang
- Spine Department 2, Wangjing Hospital, China Academy of Chinese Medical Sciences, Beijing, 100102, People's Republic of China
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Delgado-López PD, Martín-Alonso J, Martín-Velasco V, Castilla-Díez JM, Galacho-Harriero A, Ortega-Cubero S, Herrero-Gutiérrez AI, Rodríguez-Salazar A. Vancomycin powder for the prevention of surgical site infection in posterior elective spinal surgery. Neurocirugia (Astur) 2019; 31:64-75. [PMID: 31611139 DOI: 10.1016/j.neucir.2019.07.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Revised: 07/05/2019] [Accepted: 07/25/2019] [Indexed: 10/25/2022]
Abstract
OBJECTIVE To assess the effectiveness and safety of vancomycin powder as surgical site infection (SSI) prophylaxis in posterior bilateral elective spinal surgery. MATERIALS AND METHODS Single-center quasi-experimental pre and postintervention comparative cohort study. The post-intervention group received standard intravenous antibiotic prophylaxis plus 1g of vancomycin powder into the surgical field before wound closure, and the pre-intervention group only the intravenous prophylaxis. RESULTS 150 patients were included in each group. Twelve SSI (7 superficial and 5 deep) occurred in the post-intervention group and 16 SSI (7 superficial and 9 deep) in the pre-intervention group. The risk of deep SSI decreased from 6.0% to 3.3% (OR 0,54, 95%CI 0.17-1.65, p=0.411) with vancomycin powder. The percentage of deep SSI due to gram negative-positive germs were 80%-20% and 33%-67% for the post- and pre-intervention groups, respectively (p=0.265). No local or systemic adverse effects occurred attributable to vancomycin powder. CONCLUSION In posterior elective spinal surgery, prophylaxis with vancomycin powder did not result in a significantly reduced incidence of superficial and deep SSI. There was a trend towards a higher incidence of deep SSI caused by gram negative microorganisms among those treated with vancomycin.
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Affiliation(s)
| | | | | | | | | | - Sara Ortega-Cubero
- Servicio de Neurocirugía, Hospital Universitario de Burgos, Burgos, España
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Ishida W, Perdomo-Pantoja A, Elder BD, Locke J, Holmes C, Witham TF, Lo SFL. Effects of Intraoperative Intrawound Antibiotic Administration on Spinal Fusion: A Comparison of Vancomycin and Tobramycin in a Rat Model. J Bone Joint Surg Am 2019; 101:1741-1749. [PMID: 31577679 DOI: 10.2106/jbjs.18.00988] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
BACKGROUND Local, intrawound use of antibiotic powder, such as vancomycin and tobramycin, in spinal fusion surgery has become an increasingly common prophylactic measure in an attempt to reduce rates of postsurgical infection. However, the effects of localized antibiotic delivery on fusion remain unclear. The objective of this study was to examine the in vivo effects of intraoperative local delivery of 2 antibiotics commonly used in bone-grafting surgery on spinal fusion outcomes in a rat model. METHODS Single-level (L4-L5), bilateral posterolateral intertransverse process lumbar fusion surgery was performed on 60 female Lewis rats (6 to 8 weeks of age) using syngeneic iliac crest allograft mixed with clinical bone-graft substitute and varying concentrations of antibiotics (n = 12 each): (1) control without any antibiotics, (2) low-dose vancomycin (14.3 mg/kg), (3) high-dose vancomycin (71.5 mg/kg), (4) low-dose tobramycin (28.6 mg/kg), and (5) high-dose tobramycin (143 mg/kg). Eight weeks postoperatively, fusion was evaluated via micro-computed tomography (µCT), manual palpation, and histological analysis, with blinding to treatment group. In the µCT analysis, fusion-mass volumes were measured for each rat. Each spine specimen (L4-L5) was rated (manual palpation score) on a scale of 2 to 0 (2 = fused, 1 = partially fused, and 0 = non-fused). RESULTS The mean fusion-mass volume on µCT (mm) was as follows: control, 29.3 ± 6.2; low-dose vancomycin, 26.3 ± 8.9; high-dose vancomycin, 18.8 ± 7.9; low-dose tobramycin, 32.7 ± 9.0; and high-dose tobramycin, 43.8 ± 11.9 (control versus high-dose vancomycin, p < 0.05; and control versus high-dose tobramycin, p < 0.05). The mean manual palpation score for each group was as follows: control, 1.46 ± 0.58; low-dose vancomycin, 0.86 ± 0.87; high-dose vancomycin, 0.68 ± 0.62; low-dose tobramycin, 1.25 ± 0.71; and high-dose tobramycin, 1.32 ± 0.72 (control versus high-dose vancomycin, p < 0.05). The histological analyses demonstrated a similar trend with regard to spinal fusion volume. CONCLUSIONS Intraoperative local application of vancomycin, particularly at a supraphysiological dosage, may have detrimental effects on fusion-mass formation. No inhibitory effect of tobramycin on fusion-mass formation was observed. CLINICAL RELEVANCE When spine surgeons decide to use intraoperative intrawound antibiotics in spinal fusion surgery, they should weigh the reduction in surgical site infection against a possible inhibitory effect on fusion.
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Affiliation(s)
- Wataru Ishida
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | | | | | - John Locke
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Christina Holmes
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Timothy F Witham
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Sheng-Fu L Lo
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, Maryland
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Haller JM, Heflin JA, Hulet DA, Ding Q, Presson AP, Smith JT. Intrawound Vancomycin Powder Associated With Reduced Surgical Site Infection in Rib-based Distraction Surgery. J Pediatr Orthop 2019; 39:e703-e707. [PMID: 31503228 DOI: 10.1097/bpo.0000000000001042] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
BACKGROUND Despite clinical reports of improved pulmonary function and reduced spinal deformity with rib-based distraction surgery in early-onset scoliosis (EOS) patients, infection remains a common complication, reported as high as 32% in some studies. The purpose of this study was to evaluate intrawound vancomycin powder in pediatric patients managed with rib-based distraction for EOS. METHODS This was a single institution retrospective cohort study of EOS patients treated with rib-based distraction. Patients treated with and without intrawound vancomycin were compared. Patients included were younger than 18 years of age, had undergone placement of a rib-based distraction construct, and had a minimum of 6 months' follow-up. For patients in the vancomycin group, 500 mg of vancomycin powder was placed before wound closure. Complications including infection and revision surgery were recorded. P-values and 95% confidence intervals (CIs) were reported for both unadjusted and adjusted complication rates for prevancomycin and postvancomycin powder. All P-values were calculated at a significance level of 0.05. RESULTS In total, 118 patients were included, accounting for 1035 procedures in the nonvancomycin control group and 252 procedures in the vancomycin group. Both groups were similar with regard to age at initial implant, sex, diagnosis, ambulatory status, and bowel/bladder incontinence. There were 55 (5.3%; 95% CI, 4.1-7.6) postoperative infections in the control group and 3 (1.2%; 95% CI, 0.3-3.8) in the vancomycin group (P=0.008, unadjusted). After adjusting for surgery type and transfusions, the vancomycin group still had a significantly lower infection rate (1.4%; 95% CI, 0.3-3.7 vs. 5.5%; 95% CI, 3.04-6.5; P=0.022). We were unable to demonstrate a difference between the control (3.5%, 95% CI, 2.4-5.1) and vancomycin (1.8%, 95% CI, 0.5-5.7) groups for deep infection (P=0.27). CONCLUSIONS Intrawound vancomycin powder significantly reduced the surgical site infection rates following rib-based distraction surgery for EOS. We therefore recommend the use of intrawound vancomycin powder as a standard of care for patients undergoing rib-based distraction surgery. LEVEL OF EVIDENCE Pre-post intervention, retrospective cohort study-therapeutic level III.
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Affiliation(s)
| | | | | | - Qian Ding
- Department of Internal Medicine, Division of Epidemiology, University of Utah, Salt Lake City, UT
| | - Angela P Presson
- Department of Internal Medicine, Division of Epidemiology, University of Utah, Salt Lake City, UT
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Cohen EM, Marcaccio S, Goodman AD, Lemme NJ, Limbird R. Efficacy and Cost-effectiveness of Topical Vancomycin Powder in Primary Cementless Total Hip Arthroplasty. Orthopedics 2019; 42:e430-e436. [PMID: 30913295 DOI: 10.3928/01477447-20190321-05] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Accepted: 10/16/2018] [Indexed: 02/03/2023]
Abstract
Topical vancomycin has been shown to effectively reduce infections after spinal surgery while remaining safe and cost-effective; however, there are few studies evaluating topical vancomycin in total hip arthroplasty. The authors hypothesized that the incidence of periprosthetic joint infection would decrease with the use of topical vancomycin in total hip arthroplasty and that topical vancomycin would be cost-effective. A retrospective patient chart review was performed to evaluate consecutive primary cementless total hip arthroplasties performed in the authors' hospital system between April 2015 and December 2016. Demographic data were collected. Periprosthetic joint infection was defined by Musculoskeletal Infection Society criteria. Statistical analysis included t test, Fisher's exact test, and logistic regression. The costs of vancomycin and postoperative infection were used to determine the absolute risk reduction (1/number needed to treat) threshold needed for topical vancomycin to be cost-effective. In this study, 309 patients (55.7%) undergoing total hip arthroplasty were treated with topical vancomycin, and 246 patients (44.3%) did not receive treatment. There were 2 infections in the vancomycin group (0.6% incidence), and 4 in the no vancomycin group (1.6% incidence). There was no statistical difference in infection rate between the 2 cohorts (P=.414). The absolute risk reduction was 0.98%, and the number needed to treat with topical vancomycin was 102 patients to prevent 1 periprosthetic joint infection. Topical vancomycin ($12 per vial) resulted in an expected cost savings of $904 per patient. Topical vancomycin is inexpensive and cost-effective. Although not statistically significant, the topical vancomycin group had a 60% lower incidence of infection. Further research regarding appropriate prophylactic topical and intravenous antibiotic use is needed prior to widespread adoption. [Orthopedics. 2019; 42(5):e430-e436.].
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Khanna K, Valone F, Tenorio A, Grace T, Burch S, Berven S, Tay B, Deviren V, Hu SS. Local Application of Vancomycin in Spine Surgery Does Not Result in Increased Vancomycin-Resistant Bacteria-10-Year Data. Spine Deform 2019; 7:696-701. [PMID: 31495468 DOI: 10.1016/j.jspd.2019.01.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2018] [Revised: 01/19/2019] [Accepted: 01/26/2019] [Indexed: 01/06/2023]
Abstract
STUDY DESIGN Case-control study. OBJECTIVES To analyze the microbial flora in surgical spine infections and their antibiotic resistance patterns across time and determine the correlation between vancomycin application in the wound and vancomycin-resistant microbes. SUMMARY OF BACKGROUND DATA Prior studies show a reduction in surgical site infections with intrawound vancomycin placement. No data are available on the potential negative effects of this intervention, in particular, whether there would be a resultant increase in vancomycin-resistant organisms or bacterial resistance profiles. METHODS All culture-positive surgical site infections at a single institution were analyzed from 2007 to 2017. Each bacterium was assessed independently for resistance patterns. The two-tailed Fisher exact test was used to determine the correlation between vancomycin application and the presence of vancomycin-resistant bacteria, polymicrobial infections, or gram-negative bacterial infections. RESULTS One hundred and eight bacteria were isolated from 113 surgical site infections from 2007 to 2017. The most common organisms were staphylococcus with varying resistance patterns and Escherichia coli. Vancomycin-resistant Enterococcus faecium was isolated in three infections. Out of the 4,878 surgical cases from 2011 to 2017, vancomycin was placed in 48.3%, and no vancomycin in 51.7%. There were 33 infections (1.4%) in the vancomycin group and 20 infections (0.8%) in the no-vancomycin group (χ2 = 0.0521). There was no correlation between vancomycin application in the wound and vancomycin-resistant microbes (χ2 = 0.2334) and polymicrobial infections (χ2 = 0.1328). There was an increased rate of gram-negative organisms in infections after vancomycin application in the wound versus no vancomycin (χ2 = 0.0254). CONCLUSIONS Topical vancomycin within the surgical site is not correlated with vancomycin-resistant bacteria. However, there was an increased incidence of gram-negative organisms in infections after vancomycin application in the wound versus no vancomycin. Continued surveillance with prospectively collected randomized data is necessary to better understand bacterial evolution against current antimicrobial techniques. LEVEL OF EVIDENCE Level III.
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Affiliation(s)
- Krishn Khanna
- Department of Orthopaedic Surgery, University of California, San Francisco, 500 Parnassus Ave, MU320W, San Francisco, CA 94143, USA
| | - Frank Valone
- California Pacific Orthopaedics, Spine Institute, 3838 California Street, Suite 715, San Francisco, CA 94118, USA
| | - Alexander Tenorio
- Department of Orthopaedic Surgery, University of California, San Francisco, 500 Parnassus Ave, MU320W, San Francisco, CA 94143, USA
| | - Trevor Grace
- Department of Orthopaedic Surgery, University of California, San Francisco, 500 Parnassus Ave, MU320W, San Francisco, CA 94143, USA
| | - Shane Burch
- Department of Orthopaedic Surgery, University of California, San Francisco, 500 Parnassus Ave, MU320W, San Francisco, CA 94143, USA
| | - Sigurd Berven
- Department of Orthopaedic Surgery, University of California, San Francisco, 500 Parnassus Ave, MU320W, San Francisco, CA 94143, USA
| | - Bobby Tay
- Department of Orthopaedic Surgery, University of California, San Francisco, 500 Parnassus Ave, MU320W, San Francisco, CA 94143, USA
| | - Vedat Deviren
- Department of Orthopaedic Surgery, University of California, San Francisco, 500 Parnassus Ave, MU320W, San Francisco, CA 94143, USA
| | - Serena S Hu
- Department of Orthopaedic Surgery, Stanford University, 450 Broadway St., Redwood City, CA 94063, USA.
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Chen Y, Zhang L, Qin T, Wang Z, Li Y, Gu B. Evaluation of neurosurgical implant infection rates and associated pathogens: evidence from 1118 postoperative infections. Neurosurg Focus 2019; 47:E6. [DOI: 10.3171/2019.5.focus18582] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2018] [Accepted: 05/22/2019] [Indexed: 01/01/2023]
Abstract
OBJECTIVEVarious implanted materials are used in neurosurgery; however, there remains a lack of pooled data on infection rates (IRs) and infective bacteria over past decades. The goal of this study was to investigate implant infections in neurosurgical procedures in a longitudinal retrospective study and to evaluate the IRs of neurosurgically implanted materials and the distribution of pathogenic microorganisms.METHODSA systematic literature search was conducted using PubMed and Web of Science databases for the time period between 1968 and 2018. Neurosurgical implant infections were studied in 5 subgroups, including operations or diseases, implanted materials, bacteria, distribution by country, and time periods, which were obtained from the literature and statistically analyzed. In this meta-analysis, statistical heterogeneity across studies was tested by using p values and I2 values between studies of associated pathogens. Egger’s test was used for assessing symmetries of funnel plots with Stata 11.0 software. Methodological quality was assessed to judge the risk of bias according to the Cochrane Handbook.RESULTSA total of 22,971 patients from 227 articles satisfied the study’s eligibility criteria. Of these, 1118 cases of infection were reported, and the overall IR was 4.87%. In this study, the neurosurgical procedures or disorders with the top 3 IRs included craniotomy (IR 6.58%), cranioplasty (IR 5.89%), and motor movement disorders (IR 5.43%). Among 13 implanted materials, the implants with the top 3 IRs included polypropylene-polyester, titanium, and polyetheretherketone (PEEK), which were 8.11%, 8.15%, and 7.31%, respectively. Furthermore, the main causative pathogen was Staphylococcus aureus and the countries with the top 3 IRs were Denmark (IR 11.90%), Korea (IR 10.98%), and Mexico (IR 9.26%). Except for the low IR from 1998 to 2007, the overall implant IR after neurosurgical procedures was on the rise.CONCLUSIONSIn this study, the main pathogen in neurosurgery was S. aureus, which can provide a certain reference for the clinic. In addition, the IRs of polypropylene-polyester, titanium, and PEEK were higher than other materials, which means that more attention should be paid to them. In short, the total IR was high in neurosurgical implants and should be taken seriously.
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Affiliation(s)
- Ying Chen
- 1Department of Microbiology and Immunology, School of Medical Technology, Xuzhou Medical University; and
| | - Linyan Zhang
- 1Department of Microbiology and Immunology, School of Medical Technology, Xuzhou Medical University; and
| | - Tingting Qin
- 2Clinical Microbiology Laboratory, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - Zhenzhen Wang
- 1Department of Microbiology and Immunology, School of Medical Technology, Xuzhou Medical University; and
| | - Ying Li
- 1Department of Microbiology and Immunology, School of Medical Technology, Xuzhou Medical University; and
| | - Bing Gu
- 1Department of Microbiology and Immunology, School of Medical Technology, Xuzhou Medical University; and
- 2Clinical Microbiology Laboratory, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
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Minkara AA, Matsumoto H, Glotzbecker M, Samdani A, Flynn J, Vitale MG, Saiman L. A Multicenter Study of the Epidemiology of Deep Surgical Site Infections in Children With Nonidiopathic Early-Onset Scoliosis Including Associated Pathogens. Spine Deform 2019; 7:647-651. [PMID: 31202384 DOI: 10.1016/j.jspd.2018.11.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Revised: 11/13/2018] [Accepted: 11/20/2018] [Indexed: 01/13/2023]
Abstract
STUDY DESIGN Retrospective descriptive. OBJECTIVES Identify incidence and risk of deep surgical site infections (SSIs), associated pathogens, and antibiotic susceptibility in patients with nonidiopathic early-onset scoliosis (EOS) undergoing growth-friendly (GF) spine surgery. BACKGROUND SSIs following GF procedures for EOS are well described, but epidemiologic trends in associated pathogens have not been well characterized. METHODS The Children's Spine Study Group database was queried for children ≤18 years of age undergoing GF procedures for nonidiopathic EOS at 11 institutions from September 2001 to January 2016. Deep SSIs reported within 90 days of procedures were reviewed for associated pathogens and their susceptibility profiles. Data were analyzed to calculate incidence and risk. RESULTS 593 patients (median age 5.7 years, IQR 3.3-8.0 years) with scoliosis due to congenital (45%), neuromuscular (39%), and syndromic (16%) disorders underwent 5,072 procedures. The incidence of deep SSIs per patient was 12.6%; 75 patients had one or more deep SSIs. The risk of deep SSIs per procedure was 1.95% as 99 SSIs occurred after the 5072 procedures. Overall, 48% of deep SSIs followed expansion procedures. Pathogen(s) were cultured from 92% of SSIs including gram-positive cocci (GPC, 90.1%) and/or gram-negative rods (GNR, 17.6%). Methicillin-susceptible Staphylococcus aureus (48.4% of SSIs), methicillin-resistant S. aureus (23.1%), and coagulase negative staphylococci (CoNS, 8.8%) were the most common GPCs. Escherichia coli (5.5% of SSIs), Enterobacter cloacae (4.4%), and Pseudomonas aeruginosa (4.4%) were the most common among GNRs. GNR susceptibility to cefazolin was 41% during the study period, whereas GPC susceptibility to cefazolin was 59%. CONCLUSION The risk of SSIs can potentially be reduced for this vulnerable population by routinely reviewing the local epidemiology of SSIs, including the associated pathogens and their susceptibility patterns. As GNR susceptibility to cefazolin was only 41%, expanding prophylaxis to include aminoglycosides for GNR is prudent. LEVEL OF EVIDENCE Level IV.
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Affiliation(s)
- Anas A Minkara
- Columbia University Medical Center, 630 West 168th Street, New York, NY 10032, USA
| | - Hiroko Matsumoto
- Columbia University Medical Center, 630 West 168th Street, New York, NY 10032, USA
| | | | - Amer Samdani
- Shriners Hospitals for Children, 3551 N Broad St, Philadelphia, PA 19140, USA
| | - John Flynn
- Children's Hospital of Philadelphia, 3401 Civic Center Blvd, Philadelphia, PA 19140, USA
| | - Michael G Vitale
- Columbia University Medical Center, 630 West 168th Street, New York, NY 10032, USA
| | - Lisa Saiman
- Columbia University Medical Center, 630 West 168th Street, New York, NY 10032, USA.
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- Children's Spine Foundation, Valley Forge, PA 19481, USA
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Gande A, Rosinski A, Cunningham T, Bhatia N, Lee YP. Selection pressures of vancomycin powder use in spine surgery: a meta-analysis. Spine J 2019; 19:1076-1084. [PMID: 30660741 DOI: 10.1016/j.spinee.2019.01.002] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Revised: 01/14/2019] [Accepted: 01/14/2019] [Indexed: 02/03/2023]
Abstract
BACKGROUND CONTEXT Surgical site infection (SSI) is a serious and costly complication of spine surgery. Many surgeons apply vancomycin powder to the surgical wound to prevent SSIs. While multiple studies have reported reduced rates of SSI, others have suggested that widespread use of intrawound vancomycin may increase the incidence of vancomycin-resistant, gram-negative, or polymicrobial spinal infections. PURPOSE To systematically review the current literature on vancomycin powder in spine surgery and its impact on SSI culture profiles. STUDY DESIGN Meta-analysis. SAMPLE We included observational studies, retrospective chart reviews, and randomized controlled trials of patients who underwent spine surgeries with and without vancomycin powder application to surgical wounds and reported SSI rates. OUTCOME MEASURES The primary outcome was postoperative SSIs. Subgroup analyses compared rates of postoperative SSIs. METHODS We performed a comprehensive search of numerous electronic databases and conference proceedings pertaining to this topic. Our meta-analysis was conducted according to Preferred Reporting Items for Systematic Reviews and Meta-analyses guidelines. Inclusion criteria consisted of spine surgeries with or without use of vancomycin powder, case-control design, sample sizes of at least 10 in each arm, SSIs identified with bacterial cultures, and follow-up of at least 1 month. Data extracted from eligible studies included, but was not limited to, SSI rates, cultured organisms, and vancomycin powder dose. Chi-square analyses were used to assess pooled risk-estimates of intrawound vancomycin powder on reducing SSIs and selecting for gram-negative and/or polymicrobial organisms compared to controls. Pooled odds ratios, relative risks, and relative risk increase for observed outcomes were calculated. A meta-analysis was then performed with a forest plot to determine risk estimates' heterogeneity with I2 index, Q-statistic, and p value under a fixed-effects model. Funnel plot was used to assess publication bias. None of the authors received funding or other support for this review. RESULTS After reviewing nearly 400 titles and abstracts, 28 articles met inclusion criteria. They included two randomized controlled trials, one observational study, and 25 retrospective analyses. There were 412 cases of SSI (3.8%) in the control group (N=10,846) compared to 197 SSIs (2.3%) in the vancomycin powder group (N=8,456). The pooled odds ratio was 0.60 (95% confidence intervalCI 0.51-0.71, p<.05). The rate of gram-positive SSI was significantly higher in the control group compared to the vancomycin group (70% vs. 45.1%, p<.05). The rate of gram-negative and polymicrobial SSI was significantly higher in the vancomycin group (35.8% vs. 18.5%, p<.05). The risk of developing a gram-negative or polymicrobial SSI was nearly twice (93.5% higher) in the vancomycin group. Study heterogeneity and synthesizing mostly retrospective data were primary limitations. CONCLUSIONS Widespread use of prophylactic intrawound vancomycin may increase the incidence of gram-negative and polymicrobial SSIs. Vancomycin powder should likely be restricted to procedures and patients most at risk for infection.
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Affiliation(s)
- Abhiram Gande
- Department of Orthopedic Surgery, University of California, 101 S. City Drive, Irvine, Orange, CA, 92868, USA.
| | - Alex Rosinski
- School of Medicine, University of California, 1001 Health Sciences Rd, Irvine, CA, 92697, USA
| | - Torin Cunningham
- Medical Director of Pediatric Orthopedics, Miller Children's Hospital, 1760 Termino Ave, Suite 308, Long Beach, CA, 90804, USA
| | - Nitin Bhatia
- Department of Orthopedic Surgery, University of California, 101 S. City Drive, Irvine, Orange, CA, 92868, USA
| | - Yu-Po Lee
- Department of Orthopedic Surgery, University of California, 101 S. City Drive, Irvine, Orange, CA, 92868, USA
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Mandel HH, Sutton GA, Abu E, Kelmer G. Intralesional application of medical grade honey improves healing of surgically treated lacerations in horses. Equine Vet J 2019; 52:41-45. [PMID: 30895637 DOI: 10.1111/evj.13111] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2017] [Accepted: 03/01/2019] [Indexed: 01/20/2023]
Abstract
BACKGROUND Infection and dehiscence of simple lacerations is common in horses, and consistently effective methods of prevention are yet to be found. Honey has been shown to promote wound healing when applied topically; however, intralesional application prior to wound closure has not been reported. OBJECTIVES To examine whether intralesional application of medical grade honey (MGH) would reduce the incidence of infection and dehiscence following wound closure. STUDY DESIGN Prospective, open-label randomised block design clinical study. METHODS Lacerations, treated by field practitioners, were divided into treatment and control groups using block randomisation. Horses in the treatment group received a single intralesional treatment with l-mesitran gel (MGH). Data were collected at the time of wound closure and at suture removal. RESULTS Data from 127 horses were included, 69 MGH-treated and 58 control cases. No adverse effects of the MGH were recorded. MGH-treated horses were more likely to completely heal (P = 0.006, odds ratio [OR] 3.40 95% confidence interval [CI] 1.41-8.20), to have no signs of infection (P = 0.007, OR 3.64, CI 1.42-9.26) and for the veterinarians to report some degree of satisfaction (P = 0.04, OR 2.72, CI 1.05-7.09) compared to control cases. Numbers needed to treat for complete healing was 5.1 (CI 2.8-40). MAIN LIMITATIONS Clinical studies have inherent flaws compared to wound healing models, because of variability between wounds. There were more horses with limb injuries in the control group, although not statistically significant, this may have biased the results. Clinical satisfaction and signs of infection were subjective evaluations and evaluators were not blinded to the treatment group. CONCLUSIONS Intralesional application of MGH to lacerations prior to wound closure may be beneficial in preventing infection and dehiscence. Larger, blinded studies focusing on wounds at a specific location with more objective assessment should be pursued.
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Affiliation(s)
- H H Mandel
- Department of Large Animal Medicine and Surgery, Koret School of Veterinary Medicine, The Robert H. Smith Faculty of Agriculture, Food and Environment, the Hebrew University of Jerusalem, Beit Dagan, Israel
| | - G A Sutton
- Department of Large Animal Medicine and Surgery, Koret School of Veterinary Medicine, The Robert H. Smith Faculty of Agriculture, Food and Environment, the Hebrew University of Jerusalem, Beit Dagan, Israel
| | - E Abu
- Koret School of Veterinary Medicine, The Robert H. Smith Faculty of Agriculture, Food and Environment, the Hebrew University of Jerusalem, Beit Dagan, Israel
| | - G Kelmer
- Department of Large Animal Medicine and Surgery, Koret School of Veterinary Medicine, The Robert H. Smith Faculty of Agriculture, Food and Environment, the Hebrew University of Jerusalem, Beit Dagan, Israel
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Intrawound Antibiotic Powder Decreases Frequency of Deep Infection and Severity of Heterotopic Ossification in Combat Lower Extremity Amputations. Clin Orthop Relat Res 2019; 477:802-810. [PMID: 30811369 PMCID: PMC6437383 DOI: 10.1007/s11999.0000000000000090] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND Amputations sustained owing to combat-related blast injuries are at high risk for deep infection and development of heterotopic ossification, which can necessitate reoperation and place immense strain on the patient. Surgeons at our institution began use of intrawound antibiotic powder at the time of closure in an effort to decrease the rate of these surgical complications after initial and revision amputations, supported by compelling clinical evidence and animal models of blast injuries. Antibiotic powder may be useful in reducing the risk of these infections, but human studies on this topic thus far have been inconclusive. PURPOSE We sought to determine whether administration of intrawound antibiotic powder at the time of closure would (1) decrease the risk of subsequent deep infections of major lower-extremity combat-related amputations, and (2) limit formation and decrease severity of heterotopic ossification common in the combat-related traumatic residual limb. METHODS Between 2009 and 2015, 252 major lower extremity initial and revision amputations were performed by a single surgeon. Revision cases were excluded if performed specifically to address deep infection, leaving 223 amputations (88.5%) for this retrospective analysis. We reviewed medical records to collect patient information, returns to the operating room for subsequent infection, and microbiologic culture results. We also reviewed radiographs taken at least 3 months after surgery to determine the presence and severity of heterotopic ossification using the Walter Reed classification system. We grouped cases according to whether limbs underwent initial or revision amputations, and whether the limbs had a history of a prior infection. Apart from the use of antibiotic powder and duration of followup, the groups did not differ in terms of age, mechanism of injury, or sex. We then calculated the absolute risk reduction for infection and heterotopic ossification and the number needed to treat to prevent an infection. RESULTS Overall, administration of antibiotic powder resulted in a 13% absolute risk reduction of deep infection (14 of 82 [17%] versus 42 of 141 [30%]; p = 0.03; 95% CI, 0.20%-24.72%). In revision amputation surgery, the absolute risk reduction of infection with antibiotic powder use was 16% overall (eight of 58 versus 17 of 57; 95% CI, 1.21%-30.86%), and 25% for previously infected limbs (eight of 46 versus 14 of 33; 95% CI, 4.93%-45.14%). The number needed to treat to prevent one additional deep infection in amputation surgery is eight in initial amputations, seven in revision amputations, and four for revision amputation surgery on previously infected limbs. With the numbers available, we observed no reduction in the risk of heterotopic ossification with antibiotic powder use, but severity was decreased in the treatment group in terms of the number of residual limbs with moderate or severe heterotopic ossification (three of 12 versus 19 of 34; p = 0.03). CONCLUSIONS Our findings show that administration of intrawound antibiotic powder reduces deep infection in residual limbs of combat amputees, particularly in the setting of revision amputation surgery in apparently aseptic residual limbs at the time of the surgery. Furthermore, administration of antibiotic powder for amputations at time of initial closure decreases the severity of heterotopic ossification formation, providing a low-cost adjunct to decrease the risk of two complications common to amputation surgery.Level of Evidence Level III, therapeutic study.
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Joaquim AF, Milano JB, Daniel JW, Dantas FR, Onishi F, Russafa Neto E, Bertolini EDF, Borgueresi MD, Mudo ML, Botelho RV. Intraoperative vancomycin powder and post-operative infection after spinal surgery: a systematic review and meta-analysis. Rev Assoc Med Bras (1992) 2019; 65:253-261. [PMID: 30892452 DOI: 10.1590/1806-9282.65.2.253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Accepted: 07/10/2018] [Indexed: 11/22/2022] Open
Affiliation(s)
| | | | | | - Fernando Rolemberg Dantas
- Neurosurgeon - Hospital Biocor - Belo Horizonte-MG, and Post-Graduation Program, Hospital do Servidor Público Estadual, São Paulo-SP, Brasil
| | - Franz Onishi
- Neurosurgeon - Federal University of São Paulo (UNIFESP) - São Paulo-SP, Brasil
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Belykh E, Carotenuto A, Kalinin AA, Akshulakov SK, Kerimbayev T, Borisov VE, Aliyev MA, Nakaji P, Preul MC, Byvaltsev VA. Surgical Protocol for Infections, Nonhealing Wound Prophylaxis, and Analgesia: Development and Implementation for Posterior Spinal Fusions. World Neurosurg 2019; 123:390-401.e2. [DOI: 10.1016/j.wneu.2018.11.135] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Revised: 11/14/2018] [Accepted: 11/16/2018] [Indexed: 12/21/2022]
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