Evaluation of Perioperative Intestinal Motility Using a Newly Developed Real‐Time Monitoring System During Surgery

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. ResultsThe 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.

Biomarkers and Functional Assays of Epithelial Barrier Disruption and Gastrointestinal Dysmotility in Critical Illness—A Narrative Review

“…This technique was applied to 52 patients undergoing chest and neck surgery. They monitored changes in the frequency of bowel sounds over the duration of the surgery noting the expected decrease in bowel sounds secondary to the effects of anesthesia [ 48 ]. In a small pilot study, this technique was also applied in adults with septic shock.…”

Recovery Evaluation System of Bowel Functions Following Orthopedic Surgery and Gastrointestinal Endoscopy

“…However, the noise stress test revealed low noise susceptibility, meaning that the bowel sounds could not be effectively extracted from the background noise. Ogawa et al developed a novel bowel sound monitoring system for investigating perioperative intestinal motility in patients undergoing breast and neck surgery [20]. The system visualizes and quantifies gastrointestinal acoustics in real time, providing an objective, useful analysis of intestinal motility.…”