CC BY-NC-ND 4.0 · Endosc Int Open 2024; 12(01): E1-E10
DOI: 10.1055/a-2180-8880
Original article

Safety and efficacy of physician-administered balanced-sedation for the endoscopic mucosal resection of large non-pedunculated colorectal polyps

1   Gastroenterology and Hepatology, Westmead Hospital, Westmead, Australia (Ringgold ID: RIN8539)
2   Medicine, The University of Sydney Westmead Clinical School, Westmead, Australia (Ringgold ID: RIN216997)
,
1   Gastroenterology and Hepatology, Westmead Hospital, Westmead, Australia (Ringgold ID: RIN8539)
,
Neal Shahidi
1   Gastroenterology and Hepatology, Westmead Hospital, Westmead, Australia (Ringgold ID: RIN8539)
2   Medicine, The University of Sydney Westmead Clinical School, Westmead, Australia (Ringgold ID: RIN216997)
3   Gastroenterology and Hepatology, The University of British Columbia Faculty of Medicine, Vancouver, Canada (Ringgold ID: RIN12358)
,
1   Gastroenterology and Hepatology, Westmead Hospital, Westmead, Australia (Ringgold ID: RIN8539)
,
1   Gastroenterology and Hepatology, Westmead Hospital, Westmead, Australia (Ringgold ID: RIN8539)
,
Simmi Zahid
1   Gastroenterology and Hepatology, Westmead Hospital, Westmead, Australia (Ringgold ID: RIN8539)
,
Anthony Whitfield
1   Gastroenterology and Hepatology, Westmead Hospital, Westmead, Australia (Ringgold ID: RIN8539)
2   Medicine, The University of Sydney Westmead Clinical School, Westmead, Australia (Ringgold ID: RIN216997)
,
Eric Y. Lee
1   Gastroenterology and Hepatology, Westmead Hospital, Westmead, Australia (Ringgold ID: RIN8539)
2   Medicine, The University of Sydney Westmead Clinical School, Westmead, Australia (Ringgold ID: RIN216997)
,
Stephen John Williams
1   Gastroenterology and Hepatology, Westmead Hospital, Westmead, Australia (Ringgold ID: RIN8539)
,
1   Gastroenterology and Hepatology, Westmead Hospital, Westmead, Australia (Ringgold ID: RIN8539)
2   Medicine, The University of Sydney Westmead Clinical School, Westmead, Australia (Ringgold ID: RIN216997)
,
Michael J. Bourke
1   Gastroenterology and Hepatology, Westmead Hospital, Westmead, Australia (Ringgold ID: RIN8539)
2   Medicine, The University of Sydney Westmead Clinical School, Westmead, Australia (Ringgold ID: RIN216997)
› Author Affiliations
TRIAL REGISTRATION: Registration number (trial ID): NCT01368289, Trial registry: Australian New Zealand Clinical Trials Registry (http://www.anzctr.org.au/), Type of Study: Retrospective AND Registration number (trial ID): NCT02000141, Trial registry: Australian New Zealand Clinical Trials Registry (http://www.anzctr.org.au/), Type of Study: Retrospective

Abstract

Background and study aims Because of concerns about peri-procedural adverse events (AEs), guidelines recommend anesthetist-managed sedation (AMS) for long and complex endoscopic procedures. The safety and efficacy of physician-administered balanced sedation (PA-BS) for endoscopic mucosal resection (EMR) of large non-pedunculated colorectal polyps (LNPCPs) ≥20 mm is unknown.

Patients and methods We compared PA-BS with AMS in a retrospective study of prospectively collected data from consecutive patients referred for management of LNPCPs (NCT01368289; NCT02000141). A per-patient propensity analysis was performed following a 1:2 nearest-neighbor (Greedy-type) match, based on age, gender, Charlson comorbidity index, and lesion size. The primary outcome was any peri-procedural AE, which included hypotension, hypertension, tachycardia, bradycardia, hypoxia, and new arrhythmia. Secondary outcomes were unplanned admissions, 28-day re-presentation, technical success, and recurrence.

Results Between January 2016 and June 2020, 700 patients underwent EMR for LNPCPs, of whom 638 received PA-BS. Among them, the median age was 70 years (interquartile range [IQR] 62–76 years), size 35 mm (IQR 25–45 mm), and duration 35 minutes (IQR 25–60 minutes). Peri-procedural AEs occurred in 149 (23.4%), most commonly bradycardia (116; 18.2%). Only five (0.8%) required an unplanned sedation-related admission due to AEs (2 hypotension, 1 arrhythmia, 1 bradycardia, 1 hypoxia), with a median inpatient stay of 1 day (IQR 1–3 days). After propensity-score matching, there were no differences between PA-BS and AMS in peri-procedural AEs, unplanned admissions, 28-day re-presentation rates, technical success or recurrence.

Conclusions Physician-administered balanced sedation for the EMR of LNPCPs is safe. Peri-procedural AEs are infrequent, transient, rarely require admission (<1%), and are experienced in similar frequencies to those receiving anesthetist-managed sedation.



Publication History

Received: 24 December 2022

Accepted after revision: 17 August 2023

Accepted Manuscript online:
25 September 2023

Article published online:
05 January 2024

© 2024. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial-License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/).

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