Ben-David, Matan, Makwana, Raj, Yered, Tal, Sanger, Gareth J., Knowles, Charles H., Wasserberg, Nir, and Shor, Erez (2024) Local Myoelectric Sensing During Human Colonic Tissue Perfusion. Diagnostics, 14 (24). 2870.

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Abstract

Objectives: Anastomotic leakage (AL) is one of the most devastating complications after colorectal surgery. The verification of the adequate perfusion of the anastomosis is essential to ensuring anastomosis integrity following colonic resections. This study aimed to evaluate the efficacy of measuring the electrical activity of the colonic muscularis externa at an anastomosis site for perfusion analysis following colorectal surgery.

Methods: Strips of human isolated colon were maintained in a horizontal tissue bath to record spontaneous contractions and myoelectric activity and spike potentials (using a bipolar electrode array for the wireless transmission of myoelectric data—the xBar system) from the circular muscle. Intraoperative myoelectric signal assessment was performed by placing the electrode array on the colon prior to and following mesenteric artery ligation, just prior to colonic resection.

Results: In human isolated colon, the amplitude, duration, and frequency of contractions were inhibited during hypoxia by >80% for each measurement, compared to control values and time-matched oxygenated muscle. Intraoperative (N = 5; mean age, 64.8 years; range, 54–74 years; 60% females) myoelectric signal assessment revealed a decline in spike rate following arterial ligation, with a mean reduction of 112.64 to 51.13 spikes/min (p < 0.0008). No adverse events were observed during the study, and the device did not substantially alter the surgical procedure.

Conclusions: The electrical and contraction force of the human colon was reduced by ischemia, both in vitro and in vivo. These preliminary findings also suggest the potential of the xBar system to measure such changes during intraoperative and possibly postoperative periods to predict the risk of anastomotic viability as a surrogate of evolving dehiscence.

Item ID:	84849
Item Type:	Article (Research - C1)
ISSN:	2075-4418
Copyright Information:	Copyright: © 2024 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
Date Deposited:	11 Mar 2025 02:58
FoR Codes:	32 BIOMEDICAL AND CLINICAL SCIENCES > 3202 Clinical sciences > 320226 Surgery @ 100%
SEO Codes:	20 HEALTH > 2001 Clinical health > 200105 Treatment of human diseases and conditions @ 30% 20 HEALTH > 2001 Clinical health > 200101 Diagnosis of human diseases and conditions @ 70%
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