Spectral analysis of bowel sounds in intestinal obstruction using an electronic stethoscope

Table 2 Sound characteristics of acute small bowel obstruction vs acute large bowel obstruction

	Small bowel obstruction (n = 27)	Large bowel obstruction (n = 13)	P value
Sound duration (s)	0.55 (0.17-1.67)	0.87 (0.27-3.60)	0.021
Sound-to-sound interval (s)	0.72 (0.41-1.40)	0.78 (0.44-1.42)	0.621
Dominant frequency (Hz)	288 (220-479)	440 (250-643)	0.003
Peak frequency (Hz)	560 (480-695)	660 (578-740)	0.060

Data are presented as the median (inter-quartile range).