Brief Article
Copyright ©2012 Baishideng Publishing Group Co.
World J Gastroenterol. Sep 7, 2012; 18(33): 4585-4592
Published online Sep 7, 2012. doi: 10.3748/wjg.v18.i33.4585
Table 1 Sound characteristics of acute bowel obstruction vs subacute bowel obstruction vs no obstruction
No obstruction (n = 20)Subacute obstruction (n = 11)Acute obstruction (n = 40)P value
Sound duration (s)0.64 (0.20-1.57)0.63 (0.23-1.67)0.69 (0.19-2.10)> 0.05
Sound-to-sound interval (s)0.72 (0.46-1.27)0.70 (0.47-1.67)0.75 (0.41-1.41)> 0.05
Dominant frequency (Hz)325 (225-530)405 (218-565)315 (225-545)> 0.05
Peak frequency (Hz)595 (378-713)655 (465-735)585 (530-706)> 0.05