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Zhou S, Cheng Y, Cheng N, Gong J, Tu B. Early versus delayed appendicectomy for appendiceal phlegmon or abscess. Cochrane Database Syst Rev 2024; 5:CD011670. [PMID: 38695830 PMCID: PMC11064883 DOI: 10.1002/14651858.cd011670.pub3] [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] [Indexed: 05/04/2024]
Abstract
BACKGROUND This is an update of a Cochrane review first published in 2017. Acute appendicitis (inflammation of the appendix) can be simple or complicated. Appendiceal phlegmon and appendiceal abscess are examples of complicated appendicitis. Appendiceal phlegmon is a diffuse inflammation in the bottom right of the appendix, while appendiceal abscess is a discrete inflamed mass in the abdomen that contains pus. Appendiceal phlegmon and abscess account for 2% to 10% of acute appendicitis. People with appendiceal phlegmon or abscess usually need an appendicectomy to relieve their symptoms (e.g. abdominal pain, loss of appetite, nausea, and vomiting) and avoid complications (e.g. peritonitis (infection of abdominal lining)). Surgery for people with appendiceal phlegmon or abscess may be early (immediately after hospital admission or within a few days of admission), or delayed (several weeks later in a subsequent hospital admission). The optimal timing of appendicectomy for appendiceal phlegmon or abscess is debated. OBJECTIVES To assess the effects of early appendicectomy compared to delayed appendicectomy on overall morbidity and mortality in people with appendiceal phlegmon or abscess. SEARCH METHODS We searched CENTRAL, MEDLINE, Embase, two other databases, and five trials registers on 11 June 2023, together with reference checking to identify additional studies. SELECTION CRITERIA We included all individual and cluster-randomised controlled trials (RCTs), irrespective of language, publication status, or age of participants, comparing early versus delayed appendicectomy in people with appendiceal phlegmon or abscess. DATA COLLECTION AND ANALYSIS We used standard methodological procedures expected by Cochrane. MAIN RESULTS We included eight RCTs that randomised 828 participants to early or delayed appendicectomy for appendiceal phlegmon (7 trials) or appendiceal abscess (1 trial). The studies were conducted in the USA, India, Nepal, and Pakistan. All RCTs were at high risk of bias because of lack of blinding and lack of published protocols. They were also unclear about methods of randomisation and length of follow-up. 1. Early versus delayed open or laparoscopic appendicectomy for appendiceal phlegmon We included seven trials involving 788 paediatric and adult participants with appendiceal phlegmon: 394 of the participants were randomised to the early appendicectomy group (open or laparoscopic appendicectomy as soon as the appendiceal mass resolved within the same admission), and 394 were randomised to the delayed appendicectomy group (initial conservative treatment followed by delayed open or laparoscopic appendicectomy several weeks later). There was no mortality in either group. The evidence is very uncertain about the effect of early appendicectomy on overall morbidity (risk ratio (RR) 0.74, 95% confidence interval (CI) 0.19 to 2.86; 3 trials, 146 participants; very low-certainty evidence), the proportion of participants who developed wound infections (RR 0.99, 95% CI 0.48 to 2.02; 7 trials, 788 participants), and the proportion of participants who developed faecal fistulas (RR 1.75, 95% CI 0.36 to 8.49; 5 trials, 388 participants). Early appendicectomy may reduce the abdominal abscess rate (RR 0.26, 95% CI 0.08 to 0.80; 4 trials, 626 participants; very low-certainty evidence), reduce the total length of hospital stay by about two days (mean difference (MD) -2.02 days, 95% CI -3.13 to -0.91; 5 trials, 680 participants), and increase the time away from normal activities by about five days (MD 5.00 days; 95% CI 1.52 to 8.48; 1 trial, 40 participants), but the evidence is very uncertain. 2. Early versus delayed laparoscopic appendicectomy for appendiceal abscess We included one trial involving 40 paediatric participants with appendiceal abscess: 20 were randomised to the early appendicectomy group (emergent laparoscopic appendicectomy), and 20 were randomised to the delayed appendicectomy group (initial conservative treatment followed by delayed laparoscopic appendicectomy 10 weeks later). There was no mortality in either group. The trial did not report on overall morbidity, various complications, or time away from normal activities. The evidence is very uncertain about the effect of early appendicectomy on the total length of hospital stay (MD -0.20 days, 95% CI -3.54 to 3.14; very low-certainty evidence). AUTHORS' CONCLUSIONS For the comparison of early versus delayed open or laparoscopic appendicectomy for paediatric and adult participants with appendiceal phlegmon, very low-certainty evidence suggests that early appendicectomy may reduce the abdominal abscess rate. The evidence is very uncertain whether early appendicectomy prevents overall morbidity or other complications. Early appendicectomy may reduce the total length of hospital stay and increase the time away from normal activities, but the evidence is very uncertain. For the comparison of early versus delayed laparoscopic appendicectomy for paediatric participants with appendiceal abscess, data are sparse, and we cannot rule out significant benefits or harms of early versus delayed appendicectomy. Further trials on this topic are urgently needed and should specify a set of criteria for use of antibiotics, percutaneous drainage of the appendiceal abscess prior to surgery, and resolution of the appendiceal phlegmon or abscess. Future trials should include outcomes such as time away from normal activities and length of hospital stay.
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Affiliation(s)
- Shiyi Zhou
- Department of Pharmacy, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - Yao Cheng
- Department of Hepatobiliary Surgery, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - Nansheng Cheng
- Department of Bile Duct Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Jianping Gong
- Department of Hepatobiliary Surgery, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - Bing Tu
- Department of Hepatobiliary Surgery, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, China
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Hamel C, Avard B, Belanger C, Chatterjee A, Hartery A, Lim H, Kanagaratnam S, Fung C. Canadian Association of Radiologists Gastrointestinal Imaging Referral Guideline. Can Assoc Radiol J 2024:8465371231217230. [PMID: 38183236 DOI: 10.1177/08465371231217230] [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: 01/07/2024] Open
Abstract
The Canadian Association of Radiologists (CAR) Gastrointestinal Expert Panel consists of radiologists, a gastroenterologist, a general surgeon, a family physician, a patient advisor, and an epidemiologist/guideline methodologist. After developing a list of 20 clinical/diagnostic scenarios, a systematic rapid scoping review was undertaken to identify systematically produced referral guidelines that provide recommendations for one or more of these clinical/diagnostic scenarios. Recommendations from 58 guidelines and contextualization criteria in the Grading of Recommendations, Assessment, Development, and Evaluations (GRADE) for guidelines framework were used to develop 85 recommendation statements specific to the adult population across the 20 scenarios. This guideline presents the methods of development and the referral recommendations for dysphagia/dyspepsia, acute nonlocalized abdominal pain, chronic abdominal pain, inflammatory bowel disease, acute gastrointestinal bleeding, chronic gastrointestinal bleeding/anemia, abnormal liver biopsy, pancreatitis, anorectal diseases, diarrhea, fecal incontinence, and foreign body ingestion.
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Affiliation(s)
- Candyce Hamel
- Canadian Association of Radiologists, Ottawa, ON, Canada
| | - Barb Avard
- North York General Hospital, Toronto, ON, Canada
| | | | - Avi Chatterjee
- The Ottawa Hospital, University of Ottawa, Ottawa, ON, Canada
| | - Angus Hartery
- Eastern Health, Memorial University, St. Clare's, St. John's, NL, Canada
| | - Howard Lim
- University of British Columbia, BC Cancer, Vancouver Centre, Vancouver, BC, Canada
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Yildirim AC, Atlanoğlu Ş, Gedik MA, Zeren S, Ekici MF. The predictive value of computerized tomography-assessed sarcopenia for complicated appendicitis in geriatric patients. Aging Med (Milton) 2023; 6:222-229. [PMID: 37711261 PMCID: PMC10498833 DOI: 10.1002/agm2.12259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 06/05/2023] [Accepted: 06/12/2023] [Indexed: 09/16/2023] Open
Abstract
Objective Geriatric patients have more complicated appendicitis, which leads to higher morbidity and mortality rates. Sarcopenia has been shown to have a negative impact on patients undergoing surgery. This study aims to reveal the predictive value of computerized tomography-assessed (CT-assessed) sarcopenia for complicated appendicitis in geriatric patients. Methods One-hundred fifty-four patients' with acute appendicitis age, gender, co-morbidities, appendicitis status, and body mass index (BMI) values were analyzed. The skeletal muscle index (SMI) and related measurements were evaluated. Results Fifty-two percent of the patients had complicated, and 48% had uncomplicated appendicitis. There was a statistically significant difference between uncomplicated and complicated cases regarding BMI, SMI, and muscle area values (P < 0.05). The cutoff point by Receiver Operating Characteristic Curve analysis was conducted for SMI and showed 71% sensitivity and 52% specificity (P = 0.042). Multivariate analysis has shown that comorbidities are significantly more associated with complicated appendicitis than sarcopenia. Conclusion Geriatric patients with lower BMI, decreased muscle area, and CT-detected sarcopenia have an increased risk of complicated appendicitis. Comorbidities are also important risk factors. Surgeons should be aware of factors leading to complicated appendicitis, which may cause higher morbidity and mortality rates in elderly patients.
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Affiliation(s)
- Ali Cihat Yildirim
- General Surgery DepartmentKutahya Health Sciences UniversityKutahyaTurkey
| | | | - Mehmet Ali Gedik
- Radiology DepartmentKutahya Health Sciences UniversityKutahyaTurkey
| | - Sezgin Zeren
- General Surgery DepartmentKutahya Health Sciences UniversityKutahyaTurkey
| | - Mehmet Fatih Ekici
- General Surgery DepartmentKutahya Health Sciences UniversityKutahyaTurkey
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Xu H, Yang S, Xing J, Wang Y, Sun W, Rong L, Liu H. Comparison of the efficacy and safety of antibiotic treatment and appendectomy for acute uncomplicated appendicitis: a systematic review and meta-analysis. BMC Surg 2023; 23:208. [PMID: 37488583 PMCID: PMC10367319 DOI: 10.1186/s12893-023-02108-1] [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: 02/27/2023] [Accepted: 07/14/2023] [Indexed: 07/26/2023] Open
Abstract
OBJECTIVE This meta-analysis aimed to compare the efficacy and safety of antibiotic treatment and appendectomy for acute uncomplicated appendicitis. METHODS We searched the randomized controlled studies (RCTs) comparing appendectomy with antibiotic treatment for uncomplicated acute appendicitis in the electronic database including Pubmed, Embase, Cochrane, Web of Science, CNKI, VIP, and WanFang. The primary outcomes included complication-free treatment success at 1 year, complications, surgical complications, and the complicated appendicitis rates. Secondary outcomes included negative appendicitis, length of hospital stay, the quality of life at 1 month, and the impact of an appendicolith on antibiotic therapy. RESULTS Twelve randomized controlled studies were included. Compared with surgery group, the antibiotic group decreased the complication-free treatment success at 1 year (RR 0.81; 95% CI 0.73-0.91; z = 3.65; p = 0.000). Statistically significance was existed between antibiotic group and surgical group with both surgical types(open and laparoscopic) (RR 0.43; 95% CI 0.31-0.58; z = 5.36; p = 0.000), while no between the antibiotic treatment and laparoscopic surgery (RR 0.72; 95% CI 0.41-1.24; z = 1.19; p = 0.236). There was no statistically significant differences between two groups of surgical complications (RR 1.38; 95% CI 0.70-2.73; z = 0.93; p = 0.353), the complicated appendicitis rate (RR 0.71; 95% CI 0.36-1.42; z = 0.96; p = 0.338), negative appendectomy rate (RR 1.11; 95% CI 0.69-1.79; z = 0.43; p = 0.670), duration of hospital stay (SMD 0.08; 95%CI -0.11-0.27; z = 0.80; p = 0.422), and quality of life at 1 month (SMD 0.09; 95%CI -0.03-0.20; z = 1.53; p = 0.127). However, in the antibiotic treatment group, appendicolith rates were statistically higher in those whose symptoms did not improve (RR 2.94; 95% CI 1.28-6.74; z = 2.55; p = 0.011). CONCLUSIONS Although the cure rate of antibiotics is lower than surgery, antibiotic treatment is still a reasonable option for patients with uncomplicated acute appendicitis who do not want surgery without having to worry about complications or complicating the original illness.
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Affiliation(s)
- Hongxia Xu
- Department of Clinical Pharmacy, Wendeng Hospital of Traditional Chinese Orthopedics and Traumatology of Shandong Province, No.1 Fengshan Road, Wendeng District, Weihai City, 264400, Shandong Province, China.
| | - Shaohui Yang
- Department of Clinical Pharmacy, Wendeng Hospital of Traditional Chinese Orthopedics and Traumatology of Shandong Province, No.1 Fengshan Road, Wendeng District, Weihai City, 264400, Shandong Province, China
| | - Jiankun Xing
- Department of Clinical Pharmacy, Wendeng Hospital of Traditional Chinese Orthopedics and Traumatology of Shandong Province, No.1 Fengshan Road, Wendeng District, Weihai City, 264400, Shandong Province, China
| | - Yan Wang
- Department of Clinical Pharmacy, Wendeng Hospital of Traditional Chinese Orthopedics and Traumatology of Shandong Province, No.1 Fengshan Road, Wendeng District, Weihai City, 264400, Shandong Province, China
| | - Weiqiang Sun
- Department of Clinical Pharmacy, Wendeng Hospital of Traditional Chinese Orthopedics and Traumatology of Shandong Province, No.1 Fengshan Road, Wendeng District, Weihai City, 264400, Shandong Province, China
| | - Lingyan Rong
- Department of Clinical Pharmacy, Wendeng Hospital of Traditional Chinese Orthopedics and Traumatology of Shandong Province, No.1 Fengshan Road, Wendeng District, Weihai City, 264400, Shandong Province, China
| | - Huihui Liu
- Department of Clinical Pharmacy, Wendeng Hospital of Traditional Chinese Orthopedics and Traumatology of Shandong Province, No.1 Fengshan Road, Wendeng District, Weihai City, 264400, Shandong Province, China
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Feng H, Yu Q, Wang J, Yuan Y, Yu S, Wei F, Zheng Z, Peng H, Zhang W. Development and Validation of a Clinical Prediction Model for Complicated Appendicitis in the Elderly. Front Surg 2022; 9:905075. [PMID: 35756469 PMCID: PMC9218209 DOI: 10.3389/fsurg.2022.905075] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Accepted: 05/03/2022] [Indexed: 11/13/2022] Open
Abstract
Background For elderly patients with mild clinical symptoms of uncomplicated appendicitis(UA), non-surgical treatment has been shown to be feasible, whereas emergency surgical treatment is recommended in elderly patients with complicated appendicitis(CA), but it is still challenging to accurately distinguish CA and UA before treatment. This study aimed to develop a predictive model to assist clinicians to quickly determine the type of acute appendicitis. Methods We retrospectively studied the clinical data of elderly patients with acute appendicitis who visited the First Affiliated Hospital of Anhui University of Traditional Chinese Medicine from January 2012 to January 2022. The patients were divided into UA group and CA group, and the general conditions, medical history, physical examination, laboratory examination and imaging examination were compared between the two groups, and SPSS 26.0 and R 4.0.2 software were used to establish CA clinic. Predict the model, and validate it internally. Results The clinical data of 441 elderly patients with acute appendicitis were collected, 119 patients were excluded due to incomplete clinical data or other diseases. Finally, 332 patients were included in the study and divided into UA group (n = 229) and CA group (n = 103). By analyzing the clinical data of the two groups of patients, the duration of abdominal pain [OR = 1.094, 95% CI (1.056–1.134)], peritonitis [OR = 8.486, 95% CI (2.017–35.703))] and total bilirubin [OR = 1.987, 95% CI (1.627–2.426)] were independent predictors of CA (all p < 0.01). The model's Area Under Curve(AUC) = 0.985 (95% CI, 0.975–0.994). After internal verification by Bootstrap method, the model still has high discriminative ability (AUC = 0.983), and its predicted CA curve is still in good agreement with the actual clinical CA curve. Conclusion We found that a clinical prediction model based on abdominal pain duration, peritonitis, and total bilirubin can help clinicians quickly and effectively identify UA or CA before treatment of acute appendicitis in the elderly, so as to make more scientific clinical decisions.
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Affiliation(s)
- Hui Feng
- General surgery department, The First Affiliated Hospital of Anhui University of Chinese Medicine, Hefei, China
- Institute of Chinese Medicine Surgery, Anhui Academy of Chinese Medicine, Hefei, Anhui, China
| | - Qingsheng Yu
- General surgery department, The First Affiliated Hospital of Anhui University of Chinese Medicine, Hefei, China
- Institute of Chinese Medicine Surgery, Anhui Academy of Chinese Medicine, Hefei, Anhui, China
| | - Jingxing Wang
- General surgery department, The First Affiliated Hospital of Anhui University of Chinese Medicine, Hefei, China
- Institute of Chinese Medicine Surgery, Anhui Academy of Chinese Medicine, Hefei, Anhui, China
| | - Yiyang Yuan
- General surgery department, The First Affiliated Hospital of Anhui University of Chinese Medicine, Hefei, China
- Institute of Chinese Medicine Surgery, Anhui Academy of Chinese Medicine, Hefei, Anhui, China
| | - Shushan Yu
- General surgery department, The First Affiliated Hospital of Anhui University of Chinese Medicine, Hefei, China
- Institute of Chinese Medicine Surgery, Anhui Academy of Chinese Medicine, Hefei, Anhui, China
| | - Feisheng Wei
- General surgery department, The First Affiliated Hospital of Anhui University of Chinese Medicine, Hefei, China
- Institute of Chinese Medicine Surgery, Anhui Academy of Chinese Medicine, Hefei, Anhui, China
| | - Zhou Zheng
- General surgery department, The First Affiliated Hospital of Anhui University of Chinese Medicine, Hefei, China
- Institute of Chinese Medicine Surgery, Anhui Academy of Chinese Medicine, Hefei, Anhui, China
| | - Hui Peng
- General surgery department, The First Affiliated Hospital of Anhui University of Chinese Medicine, Hefei, China
- Institute of Chinese Medicine Surgery, Anhui Academy of Chinese Medicine, Hefei, Anhui, China
| | - Wanzong Zhang
- General surgery department, The First Affiliated Hospital of Anhui University of Chinese Medicine, Hefei, China
- Institute of Chinese Medicine Surgery, Anhui Academy of Chinese Medicine, Hefei, Anhui, China
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Abstract
IMPORTANCE Acute appendicitis is the most common abdominal surgical emergency in the world, with an annual incidence of 96.5 to 100 cases per 100 000 adults. OBSERVATIONS The clinical diagnosis of acute appendicitis is based on history and physical, laboratory evaluation, and imaging. Classic symptoms of appendicitis include vague periumbilical pain, anorexia/nausea/intermittent vomiting, migration of pain to the right lower quadrant, and low-grade fever. The diagnosis of acute appendicitis is made in approximately 90% of patients presenting with these symptoms. Laparoscopic appendectomy remains the most common treatment. However, increasing evidence suggests that broad-spectrum antibiotics, such as piperacillin-tazobactam monotherapy or combination therapy with either cephalosporins or fluroquinolones with metronidazole, successfully treats uncomplicated acute appendicitis in approximately 70% of patients. Specific imaging findings on computed tomography (CT), such as appendiceal dilatation (appendiceal diameter ≥7 mm), or presence of appendicoliths, defined as the conglomeration of feces in the appendiceal lumen, identify patients for whom an antibiotics-first management strategy is more likely to fail. CT findings of appendicolith, mass effect, and a dilated appendix greater than 13 mm are associated with higher risk of treatment failure (≈40%) of an antibiotics-first approach. Therefore, surgical management should be recommended in patients with CT findings of appendicolith, mass effect, or a dilated appendix who are fit for surgery, defined as having relatively low risk of adverse outcomes or postoperative mortality and morbidity. In patients without high-risk CT findings, either appendectomy or antibiotics can be considered as first-line therapy. In unfit patients without these high-risk CT findings, the antibiotics-first approach is recommended, and surgery may be considered if antibiotic treatment fails. In unfit patients with high-risk CT findings, perioperative risk assessment as well as patient preferences should be considered. CONCLUSIONS AND RELEVANCE Acute appendicitis affects 96.5 to 100 people per 100 000 adults per year worldwide. Appendectomy remains first-line therapy for acute appendicitis, but treatment with antibiotics rather than surgery is appropriate in selected patients with uncomplicated appendicitis.
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Affiliation(s)
- Dimitrios Moris
- Department of Surgery, Duke University Medical Center, Durham, North Carolina
| | - Erik Karl Paulson
- Department of Radiology, Duke University Medical Center, Durham, North Carolina
| | - Theodore N Pappas
- Department of Surgery, Duke University Medical Center, Durham, North Carolina
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Antoniou SA, Mavridis D, Kontouli KM, Drakopoulos V, Gorter-Stam M, Eriksson S, Leone M, Pérez-Bocanegra MC, Smart NJ, Milone M, Carrano FM, Antoniou GA, Vandvik PO. EAES rapid guideline: appendicitis in the elderly. Surg Endosc 2021; 35:3233-3243. [PMID: 33999255 DOI: 10.1007/s00464-021-08524-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 04/30/2021] [Indexed: 11/30/2022]
Abstract
BACKGROUND There is a lack of trustworthy evidence-informed guidelines on the diagnosis and management of acute appendicitis in elderly patients. METHODS We developed a rapid guideline in accordance with GRADE and AGREE II standards. The steering group consisted of general surgeons, members of the EAES Research Committee/Guidelines Subcommittee with expertise and experience in guideline development, advanced medical statistics and evidence synthesis, biostatisticians, and a guideline methodologist. The guideline panel consisted of three general surgeons, an intensive care physician, a geriatrician and a patient advocate. We conducted systematic reviews and the results of evidence synthesis were summarized in evidence tables. Recommendations were authored and published through an online authoring and publication platform (MAGICapp), with the guideline panel making use of an evidence-to-decision framework and a Delphi process to arrive at consensus. RESULTS This rapid guideline provides a weak recommendation against the use of clinical scoring systems to replace cross-sectional imaging in the diagnostic approach of suspected appendicitis in elderly patients. It provides a weak recommendation against the use of antibiotics alone over surgical treatment in patients who are deemed fit for surgery, and a weak recommendation for laparoscopic over open surgery. Furthermore, it provides a summary of surgery-associated risks in elderly patients. The guidelines, with recommendations, evidence summaries and decision aids in user-friendly formats can also be accessed in MAGICapp: https://app.magicapp.org/#/guideline/4494 . CONCLUSIONS This rapid guideline provides evidence-informed trustworthy recommendations on the diagnosis and management of acute appendicitis in elderly patients.
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Affiliation(s)
- Stavros A Antoniou
- Surgical Department, Mediterranean Hospital of Cyprus, Limassol, Cyprus. .,Medical School, European University Cyprus, Nicosia, Cyprus.
| | - Dimitris Mavridis
- Department of Primary Education, School of Education, University of Ioannina, Ioannina, Greece.,Faculté de Médecine, Université Paris Descartes, Paris, France
| | - Katerina Maria Kontouli
- Department of Primary Education, School of Education, University of Ioannina, Ioannina, Greece
| | - Vasileios Drakopoulos
- 1st Department of Surgery & Organ Transplant Unit, Evangelismos General Hospital of Athens, Athens, Greece
| | | | - Sture Eriksson
- Department of Community Medicine and Rehabilitation, Umeå University, Umeå, Sweden
| | - Marc Leone
- Department of Anesthesiology and Critical Care Medicine, Nord Hospital, Marseille, France
| | | | - Neil J Smart
- Department of Surgery, Department of Surgery, Royal Devon & Exeter Hospital, Exeter, UK
| | - Marco Milone
- Department of Clinical Medicine and Surgery, University "Federico II" of Naples, Naples, Italy
| | - Francesco Maria Carrano
- PhD Program in Applied Medical-Surgical Sciences, University of Rome "Tor Vergata", 00133, Rome, Italy.,Department of Surgical Sciences, University of Rome "Tor Vergata", Viale Oxford, 81, 00133, Rome, Italy
| | - George A Antoniou
- Department of Vascular and Endovascular Surgery, The Royal Oldham Hospital, Pennine Acute Hospitals NHS Trust, Northern Care Alliance NHS Group, Manchester, UK.,Division of Cardiovascular Sciences, School of Medical Sciences, The University of Manchester, Manchester, UK
| | - Per Olav Vandvik
- Department of Health Management and Health Economics, University of Oslo, Oslo, Norway
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