Copyright: ©Author(s) 2026.
World J Gastrointest Oncol. Jul 15, 2026; 18(7): 120582
Published online Jul 15, 2026. doi: 10.4251/wjgo.120582
Published online Jul 15, 2026. doi: 10.4251/wjgo.120582
Table 2 Analysis of bowel sounds characteristics before and after surgery in different groups of patients
| Variables | Total (n = 133) | No-PPOI (n = 103) | PPOI (n = 30) | Z value1 | P value |
| Pre-operation 1 day NBS | 7.05 (4.29, 9.59) | 6.86 (4.28, 9.45) | 7.62 (5.14, 9.86) | -0.82 | 0.415 |
| Pre-operation 1 day BSVA | 49.92 (47.66, 52.33) | 50.08 (47.87, 52.37) | 49.20 (47.09, 51.82) | -0.75 | 0.453 |
| Pre-operation 1 day FBS | 407.56 (351.78, 452.70) | 415.95 (352.99, 452.76) | 375.37 (321.35, 439.87) | -1.43 | 0.151 |
| Operation day NBS | 2.41 (1.30, 3.26) | 2.38 (1.28, 3.23) | 2.48 (1.58, 3.35) | -0.40 | 0.688 |
| Operation day BSVA | 43.44 (41.95, 45.71) | 43.68 (42.12, 46.21) | 42.77 (41.76, 44.60) | -1.46 | 0.145 |
| Operation day FBS | 399.59 (351.03, 461.91) | 399.59 (350.22, 462.89) | 399.53 (356.64, 451.15) | -0.37 | 0.712 |
| RTBS | 19.70 (15.00, 25.30) | 18.10 (14.55, 24.95) | 23.70 (18.23, 27.10) | -2.33 | 0.020 |
| Post-operation 1 day NBS | 2.46 (1.18, 3.61) | 2.85 (1.42, 3.85) | 1.19 (0.69, 2.53) | -3.81 | <0.001 |
| Post-operation 1 day BSVA | 5.93 (3.42, 8.24) | 6.16 (3.91, 8.39) | 5.18 (3.05, 6.94) | -1.27 | 0.205 |
| Post-operation 1 day FBS | 406.38 (364.14, 451.16) | 406.38 (363.79, 449.21) | 403.31 (368.13, 460.78) | -0.57 | 0.566 |
| Post-operation 2 day NBS | 3.73 (2.26, 5.14) | 3.79 (2.71, 5.15) | 3.24 (1.38, 4.83) | -1.73 | 0.083 |
| Post-operation 2 day BSVA | 49.63 (47.85, 51.37) | 49.93 (48.29, 51.53) | 48.71 (46.50, 50.51) | -2.44 | 0.015 |
| Post-operation 2 day FBS | 411.17 (371.22, 456.93) | 409.40 (363.93, 456.14) | 413.56 (389.37, 462.64) | -1.40 | 0.162 |
| Post-operation 3 days NBS | 5.87 (3.60, 7.96) | 5.81 (3.51, 8.02) | 6.05 (4.43, 7.65) | -0.38 | 0.700 |
| Post-operation 3 days BSVA | 44.75 (42.23, 46.46) | 44.75 (42.12, 46.47) | 44.68 (42.53, 46.26) | -0.19 | 0.853 |
| Post-operation 3 days FBS | 381.25 (342.42, 448.98) | 391.13 (345.84, 456.54) | 361.53 (328.83, 424.37) | -1.56 | 0.118 |
- Citation: Shi S, Wang C, Zhao CS, Chen Z, Yan L, Liang Y, Yue X, Duan XL, Wang ZZ. Clinical study predicting prolonged postoperative ileus after laparoscopic colorectal cancer surgery with intelligent bowel sound auscultation system. World J Gastrointest Oncol 2026; 18(7): 120582
- URL: https://www.wjgnet.com/1948-5204/full/v18/i7/120582.htm
- DOI: https://dx.doi.org/10.4251/wjgo.120582