Abdominal Acoustic Monitoring Can Identify Post-Op Ileus
(HealthDay News) — A noninvasive, abdominal acoustic monitoring device can distinguish postoperative ileus (POI) from patients and controls without POI, according to a proof-of-concept study published online August 5 in the Journal of Gastrointestinal Surgery
Brennan M.R. Spiegel, MD, from the Veterans Affairs Greater Los Angeles Healthcare System, and colleagues developed a noninvasive Acoustic Gastro-Intestinal Surveillance (AGIS) biosensor and compared intestinal rates of eight healthy subjects using AGIS for 60 minutes after a standardized meal to recordings of two postoperative groups: seven patients tolerating standardized feeding and 25 POI patients.
The researchers found that mean intestinal rates were 0.14, 0.03, and 0.016 events per second for the healthy subjects, patients tolerating feeding, and POI patients, respectively (ANOVA P<0.001). AGIS showed 100% sensitivity and 97% specificity in separating patients from controls. Rates were higher in fed vs. POI patients (P=0.017).
"Future research will test whether AGIS can identify patients at risk for development of POI and assist with postoperative feeding decisions," the authors write.