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Yazawa N, Nakamura Y, Takemasa A, Uchida N, Kushima Y, Masawa M, Okutomi H, Soda S, Ikeda N, Arai R, Chibana K, Niho S, Shimizu Y. Transcutaneous gas monitoring is a useful tool to detect respiratory depression during bronchoscopy performed under propofol sedation. Respir Investig 2023; 61:793-799. [PMID: 37774589 DOI: 10.1016/j.resinv.2023.08.009] [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: 06/14/2023] [Revised: 07/24/2023] [Accepted: 08/25/2023] [Indexed: 10/01/2023]
Abstract
BACKGROUND Bronchoscopy is a relatively invasive procedure where patients are often sedated. However, adequate sedation is not always achieved. Propofol is often used for difficult-to-sedate patients undergoing bronchoscopy despite a potential risk of respiratory depression. Transcutaneous carbon dioxide (tcpCO2) monitoring, introduced recently, is recognized as a convenient surrogate method for continuous monitoring of the partial pressure of arterial carbon dioxide (PaCO2). This study examined the safety of switching to propofol during bronchoscopy by using transcutaneous carbon dioxide monitoring. METHODS Patients in whom transcutaneous gas monitoring had been performed during bronchoscopy were included in this study. The participants were divided into two groups: 1) the midazolam + fentanyl group (MF group), and 2) the group in which midazolam was switched to propofol owing to inadequate sedation obtained with midazolam + fentanyl (MFP group). We retrospectively analyzed the transcutaneous gas measurement data collected in patients under propofol sedation for bronchoscopy. RESULTS This study included 61 (MF, n = 41; MFP, n = 20) patients. The duration of elevated tcpCO2 (>50 mm Hg) was greater in the MFP group (MF 8.5 min vs. MFP 22.1 min, p = 0.042). CONCLUSION Switching midazolam to propofol during bronchoscopy was significantly associated with a higher risk of elevated tcpCO2, which is indicative of respiratory depression. Therefore, continuous tcpCO2 monitoring is required to ensure the safety of patients under propofol sedation for bronchoscopy.
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Affiliation(s)
- Nana Yazawa
- Department of Pulmonary Medicine and Clinical Immunology, Dokkyo Medical University School of Medicine, Japan
| | - Yusuke Nakamura
- Department of Pulmonary Medicine and Clinical Immunology, Dokkyo Medical University School of Medicine, Japan.
| | - Akihiro Takemasa
- Department of Pulmonary Medicine and Clinical Immunology, Dokkyo Medical University School of Medicine, Japan; Respiratory Endoscopy Center, Dokkyo Medical University Hospital, Japan
| | - Nobuhiko Uchida
- Department of Pulmonary Medicine and Clinical Immunology, Dokkyo Medical University School of Medicine, Japan
| | - Yoshitomo Kushima
- Department of Pulmonary Medicine and Clinical Immunology, Dokkyo Medical University School of Medicine, Japan
| | - Meitetsu Masawa
- Department of Pulmonary Medicine and Clinical Immunology, Dokkyo Medical University School of Medicine, Japan
| | - Hiroaki Okutomi
- Department of Pulmonary Medicine and Clinical Immunology, Dokkyo Medical University School of Medicine, Japan
| | - Sayo Soda
- Department of Pulmonary Medicine and Clinical Immunology, Dokkyo Medical University School of Medicine, Japan
| | - Naoya Ikeda
- Department of Pulmonary Medicine and Clinical Immunology, Dokkyo Medical University School of Medicine, Japan; Respiratory Endoscopy Center, Dokkyo Medical University Hospital, Japan
| | - Ryo Arai
- Department of Pulmonary Medicine and Clinical Immunology, Dokkyo Medical University School of Medicine, Japan
| | - Kazuyuki Chibana
- Department of Pulmonary Medicine and Clinical Immunology, Dokkyo Medical University School of Medicine, Japan
| | - Seiji Niho
- Department of Pulmonary Medicine and Clinical Immunology, Dokkyo Medical University School of Medicine, Japan
| | - Yasuo Shimizu
- Department of Pulmonary Medicine and Clinical Immunology, Dokkyo Medical University School of Medicine, Japan; Respiratory Endoscopy Center, Dokkyo Medical University Hospital, Japan
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Ang TL, Seet E, Goh YC, Ng WK, Koh CJ, Lui HF, Li JW, Oo AM, Lim KBL, Ho KS, Chew MH, Quan WL, Tan DMY, Ng KH, Goh HS, Cheong WK, Tseng P, Ling KL. Academy of Medicine, Singapore clinical guideline on the use of sedation by non-anaesthesiologists during gastrointestinal endoscopy in the hospital setting. ANNALS OF THE ACADEMY OF MEDICINE, SINGAPORE 2022; 51:24-39. [PMID: 35091728 DOI: 10.47102/annals-acadmedsg.2021306] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
INTRODUCTION In Singapore, non-anaesthesiologists generally administer sedation during gastrointestinal endoscopy. The drugs used for sedation in hospital endoscopy centres now include propofol in addition to benzodiazepines and opiates. The requirements for peri-procedural monitoring and discharge protocols have also evolved. There is a need to develop an evidence-based clinical guideline on the safe and effective use of sedation by non-anaesthesiologists during gastrointestinal endoscopy in the hospital setting. METHODS The Academy of Medicine, Singapore appointed an expert workgroup comprising 18 gastroenterologists, general surgeons and anaesthesiologists to develop guidelines on the use of sedation during gastrointestinal endoscopy. The workgroup formulated clinical questions related to different aspects of endoscopic sedation, conducted a relevant literature search, adopted Grading of Recommendations, Assessment, Development and Evaluation (GRADE) methodology and developed recommendations by consensus using a modified Delphi process. RESULTS The workgroup made 16 recommendations encompassing 7 areas: (1) purpose of sedation, benefits and disadvantages of sedation during gastrointestinal endoscopy; (2) pre-procedural assessment, preparation and consent taking for sedation; (3) Efficacy and safety of drugs used in sedation; (4) the role of anaesthesiologist administered sedation during gastrointestinal endoscopy; (5) performance of sedation; (6) post-sedation care and discharge after sedation; and (7) training in sedation for gastrointestinal endoscopy for non-anaesthesiologists. CONCLUSION These recommendations serve to guide clinical practice during sedation for gastrointestinal endoscopy by non-anaesthesiologists in the hospital setting.
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Affiliation(s)
- Tiing Leong Ang
- Department of Gastroenterology and Hepatology, Changi General Hospital, Singapore
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Sneyd JR, Absalom AR, Barends CRM, Jones JB. Hypotension during propofol sedation for colonoscopy: an exploratory analysis. Br J Anaesth 2021; 128:610-622. [PMID: 34916051 PMCID: PMC9008870 DOI: 10.1016/j.bja.2021.10.044] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 10/11/2021] [Accepted: 10/17/2021] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Intraoperative and postoperative hypotension occur commonly and are associated with organ injury and poor outcomes. Changes in arterial blood pressure (BP) during procedural sedation are not well described. METHODS Individual patient data from five trials of propofol sedation for colonoscopy and a clinical database were pooled and explored with logistic and linear regression. A literature search and focused meta-analysis compared the incidence of hypotension with propofol and alternative forms of procedural sedation. Hypotensive episodes were characterised by the original authors' definitions (typically systolic BP <90 mm Hg). RESULTS In pooled individual patient data (n=939), 36% of procedures were associated with episodes of hypotension. Longer periods of propofol sedation and larger propofol doses were associated with longer-lasting and more-profound hypotension. Amongst 380 patients for whom individual BP measurements were available, 107 (28%) experienced systolic BP <90 mm Hg for >5 min, and in 89 (23%) the episodes exceeded 10 min. Meta-analysis of 18 RCTs identified an increased risk ratio for the development of hypotension in procedures where propofol was used compared with the use of etomidate (two studies; n=260; risk ratio [RR] 2.0 [95% confidence interval: 1.37-2.92]; P=0.0003), remimazolam (one study; n=384; RR 2.15 [1.61-2.87]; P=0.0001), midazolam (14 studies; n=2218; RR 1.46 [1.18-1.79]; P=0.0004), or all benzodiazepines (15 studies; n=2602; 1.67 [1.41-1.98]; P<0.00001). Hypotension was less likely with propofol than with dexmedetomidine (one study; n=60; RR 0.24 [0.09-0.62]; P=0.003). CONCLUSIONS Hypotension is common during propofol sedation for colonoscopy and of a magnitude and duration associated with harm in surgical patients.
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Affiliation(s)
- J Robert Sneyd
- Faculty of Medicine and Dentistry, University of Plymouth, Plymouth, UK.
| | - Anthony R Absalom
- Department of Anesthesiology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Clemens R M Barends
- Department of Anesthesiology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Jordan B Jones
- College of Osteopathic Medicine, Rocky Vista University, Ivins, UT, USA
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Parker W, Estrich CG, Abt E, Carrasco-Labra A, Waugh JB, Conway A, Lipman RD, Araujo MWB. Benefits and harms of capnography during procedures involving moderate sedation: A rapid review and meta-analysis. J Am Dent Assoc 2019; 149:38-50.e2. [PMID: 29304910 DOI: 10.1016/j.adaj.2017.08.030] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2017] [Revised: 08/22/2017] [Accepted: 08/26/2017] [Indexed: 11/29/2022]
Abstract
BACKGROUND Patient safety is a priority in dentistry. Evaluating the benefits and harms associated with the addition of capnography to standard monitoring during moderate sedation for adult patients in the dental practice setting is needed. TYPES OF STUDIES REVIEWED The authors used rapid review methodology to identify relevant systematic reviews, which they updated through a systematic search by using the same search strategy as the identified reviews. The authors searched PubMed and Google Scholar and through the references of the identified systematic reviews, which yielded 2,892 studies. Inclusion criteria were that the article was available in English, was original research in adult humans who had undergone moderate procedural sedation, and involved comparing standard monitoring with the addition of capnography. RESULTS Sixteen studies were eligible, involving 3,866 adults undergoing procedural sedation. The authors used the Grading of Recommendations Assessment, Development and Evaluation approach to evaluate the evidence and rate it as being of moderate to low quality because of high risk of bias and heterogeneous effects for the outcomes of hypoxemia and adverse respiratory events. Capnography had higher sensitivity to detect adverse respiratory events than did standard monitoring alone (0.92; 95% confidence interval, 0.65 to 0.99) and may reduce the risk of developing hypoxemia by 31% (risk ratio, 0.69; 95% confidence interval, 0.57 to 0.82). Capnography did not affect the risk of developing serious adverse events, procedure time, sedation quality, or patient satisfaction. CONCLUSIONS AND PRACTICAL IMPLICATIONS Adding capnography to standard monitoring of adults during moderate sedation may reduce the risk of developing hypoxemia, increase detection of adverse respiratory events, and is not associated with additional harms. These findings suggest routine use of capnography during moderate sedation has the potential to reduce adverse anesthetic outcomes in dental practice.
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Kresz A, Mayer B, Zernickel M, Posovszky C. Carbon dioxide versus room air for colonoscopy in deeply sedated pediatric patients: a randomized controlled trial. Endosc Int Open 2019; 7:E290-E297. [PMID: 30705964 PMCID: PMC6353645 DOI: 10.1055/a-0806-7060] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Accepted: 09/24/2018] [Indexed: 12/21/2022] Open
Abstract
Background and study aims Use of carbon dioxide (CO 2 ) instead of room air (RA) during colonoscopy in adults revealed significantly less flatulence and abdominal pain in several studies. The objectives of this study were to investigate the effects of CO 2 usage on post-interventional pain, abdominal discomfort, abdominal girth, pCO 2 levels, and narcotic requirement in deeply sedated pediatric patients. Patients and methods A total of 97 children and adolescents aged 4 years to 17 years undergoing colonoscopy were randomized to RA or CO 2 in a prospective, randomized, controlled trial. Age-appropriate pain scales assessed abdominal pain as primary outcome. In addition, abdominal girth, abdominal bloating, transcutaneous pCO 2 , narcotic requirement to achieve deeply sedation, and post-procedural analgesic demand was analyzed in 73 patients. Results Overall, significantly fewer patients reported bloating in the CO 2 group ( P = 0.0012). However, we observed only a trend to lower post-interventional pain ( P = 0.15) and a lower pain score. There was no significant difference in transcutaneous pCO 2 level and no adverse events occurred. Although there was no difference in the dosage of propofol and midazolam, we observed a significant increased necessity for use of synthetic opioids in the RA group to achieve optimal examination conditions ( P = 0.023). Conclusions The benefits using CO 2 in colonoscopy of deeply sedated children predominate. In particular, CO 2 insufflation may allow a less painful post-interventional time and it significantly reduces abdominal bloating. Moreover, with CO 2 , significantly less additional opioids were used. Thus, CO 2 insufflation can be considered as safe in deeply sedated patients as there was no relevant pulmonary CO 2 retention observed. (DRKS00013914).
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Affiliation(s)
- Andrea Kresz
- Department of Pediatrics and Adolescent Medicine, University Medical Center Ulm, Ulm, Germany
| | - Benjamin Mayer
- Institute of Epidemiology and Medical Biometry, Ulm University, Ulm, Germany.
| | - Maria Zernickel
- Department of Pediatrics and Adolescent Medicine, University Medical Center Ulm, Ulm, Germany
| | - Carsten Posovszky
- Department of Pediatrics and Adolescent Medicine, University Medical Center Ulm, Ulm, Germany,Corresponding author Carsten Posovszky, MD Pediatric Gastroenterology and NutritionDepartment of Pediatrics and Adolescent MedicineUniversity Medical Center UlmEythstr. 2489075 UlmGermany+0731-50057334
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Zhang W, Zhu Z, Zheng Y. Effect and safety of propofol for sedation during colonoscopy: A meta-analysis. J Clin Anesth 2018; 51:10-18. [DOI: 10.1016/j.jclinane.2018.07.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Revised: 07/23/2018] [Accepted: 07/23/2018] [Indexed: 02/08/2023]
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Xu BB, Zhao XL, Xu GP. Clinical study of anesthetization by dezocine combined with propofol for indolent colonoscopy. World J Gastroenterol 2016; 22:5609-5615. [PMID: 27350739 PMCID: PMC4917621 DOI: 10.3748/wjg.v22.i24.5609] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2016] [Revised: 04/12/2016] [Accepted: 05/23/2016] [Indexed: 02/06/2023] Open
Abstract
AIM: To assess the use of dezocine combined with propofol for the anesthetization of patients undergoing indolent colonoscopy.
METHODS: A cross-sectional survey of patients undergoing indolent colonoscopy in the Xinjiang People’s Hospital was conducted from April 1 to April 30, 2015. The survey collected patient general information and anesthesia data, including overall medical experience and pain management. Thirty minutes after colonoscopy surgery, samples of venous blood were collected and the biochemical indicators of gastrointestinal function were analyzed.
RESULTS: There were 98 female and 62 male respondents. Indolent colonoscopy was found to be more suitable for mid to older-aged patients. The necessary conditions for the diagnosis of digestive diseases were required in 65 of the 73 inpatients. Adverse reactions to the intraoperative process included two cases of body movement and two cases of respiratory depression. Gastrin and vasoactive intestinal peptide levels were slightly increased. However, somatostatin and endothelin levels were slightly decreased.
CONCLUSION: This study revealed that dezocine combined with propofol can be successfully used for the anesthetization of indolent colonoscopy patients without pain and should be widely used.
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Abstract
Concerns about the safety of endoscopist-directed propofol (EDP) have been voiced that propofol should be given only by healthcare professionals trained in the administration of general anesthesia. Here we discuss the safety and drawbacks of EDP for routine endoscopic procedures. Currently, both diagnostic and therapeutic endoscopy are well tolerated and accepted by both patients and endoscopists due to the application of sedation in most clinics worldwide. Accordingly, propofol use is increasing in many countries. It is crucial for endoscopists to be very familiar with the use of propofol or a combination of drugs. However, the controversy regarding the administration of sedation by an endoscopist or an anesthesiologist continues. Until now, there have been no randomized control trials comparing sedation induced by propofol administered by an endoscopist or by an anesthesiologist. It might be difficult to perform this kind of study. For the convenience and safety of sedative endoscopy, it would be important that EDP be generally applied to endoscopic procedures, and for more safety, an anesthesiologist may automatically take care of particular patients at high risk of suffering from propofol side effects.
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Affiliation(s)
- Eun Hye Kim
- Division of Gastroenterology, Department of Internal Medicine, Institute of Gastroenterology, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Sang Kil Lee
- Division of Gastroenterology, Department of Internal Medicine, Institute of Gastroenterology, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
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Hypoxia-Related Brain Dysfunction in Forensic Medicine. NEUROTRANSMITTER INTERACTIONS AND COGNITIVE FUNCTION 2014; 837:49-56. [DOI: 10.1007/5584_2014_84] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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