Evaluation of Perioperative Intestinal Motility Using a Newly Developed Real-Time Monitoring System During Surgery
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ORIGINAL SCIENTIFIC REPORT
Evaluation of Perioperative Intestinal Motility Using a Newly Developed Real-Time Monitoring System During Surgery Maho Ogawa1 • Tsutomu Namikawa1 • Toyokazu Oki1 • Masaya Munekage1 • Hiromichi Maeda1 Hiroyuki Kitagawa1 • Ken Dabanaka1 • Takeki Sugimoto1 • Michiya Kobayashi2 • Osamu Sakata3 • Kenichi Matsuda4 • Kazuhiro Hanazaki1
•
Accepted: 4 October 2020 Ó Socie´te´ Internationale de Chirurgie 2020
Abstract Background This study aimed to investigate perioperative intestinal motility using a novel bowel sound monitoring system in patients undergoing breast and neck surgery. Materials and methods This study enrolled 52 patients who underwent surgery for breast cancer, thyroid tumor, and parathyroid tumor at Kochi Medical School from May 2019 to June 2020. Perioperative bowel sound counts (BSCs) were recorded using a newly developed real-time analysis system in the operating theater. Clinical information and BSC per minute (cpm) data during the preanesthetic, preoperative, operative, postoperative periods, and period in recovery room were obtained to compare between each period. The Mann–Whitney U and Pearson Chi-square tests were used in data analysis. Results The BSCs during the intraoperative period and postoperative period were significantly decreased compared to those during the preanesthetic period (0.07 cpm versus [vs.]. 1.4 cpm, P = 0.002 and 0.1 cpm vs. 1.4 cpm, P = 0.025, respectively). The preoperative BSC with a preanesthetic BSC \ 1.4 was significantly lower than that with a preanesthetic BSC C 1.4 (0.40 cpm vs. 1.78 cpm, P = 0.006). The preanesthetic, preoperative, and postoperative BSCs with an intraoperative BSC \ 0.07 were significantly lower than those with an intraoperative BSC C 0.07 (0.48 cpm vs. 2.83 cpm, P = 0.007; 0.40 cpm vs. 1.81 cpm, P = 0.008; and 0.07 cpm vs. 0.42 cpm, P = 0.006, respectively). Conclusion The real-time bowel sound analysis system demonstrated an inhibitory effect associated with anesthetic and surgical stress on intestinal motility as the BSC sequentially.
Introduction & Tsutomu Namikawa [email protected] 1
Department of Surgery, Kochi Medical School, Kohasu, Okocho, Nankoku, Kochi 783-8505, Japan
2
Department of Human Health and Medical Sciences, Kochi Medical School, Kochi, Japan
3
Department of Electrical Engineering, Tokyo University of Science Faculty of Engineering, Tokyo, Japan
4
Department of Emergency and Critical Care Medicine, Faculty of Medicine, University of Yamanashi, Yamanashi, Japan
The patients who undergo surgery under general anesthesia tend to have reduced intestinal motility due to various factors including surgical stress, inflammation, and drug effects [1]. The negative effect of these interventions may lead to clinical signs of postoperative ileus, which is an interruption of bowel function after surgery, even after elective non-abdominal procedures [2]. Despite the improvements yielded by enhanced recovery programs (ERASs), postoperative gastrointestinal dysfunction remains a clinically relevant probl
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