18 January 2021 : Clinical Research
Effect of Lung Recruitment Maneuvers on Reduction of Atelectasis Determined by Lung Ultrasound in Patients More Than 60 Years Old Undergoing Laparoscopic Surgery for Colorectal Carcinoma: A Prospective Study at a Single Center
Yujiao Yang1ABCDEFG*, Yuan Geng1BC, Donghang Zhang2E, Yong Wan1E, Rurong Wang2CEFGDOI: 10.12659/MSM.926748
Med Sci Monit 2021; 27:e926748
Table 1 Incidence of atelectasis per group and per protocol step assessed by lung ultrasound.
| Protocol step | C group, n=20 | * P value | RM group, n=20 | * P value | ** P value |
|---|---|---|---|---|---|
| T1 n (%) | 0 (0) | 0 (0) | |||
| T2 n (%) | 19 (95) | <0.001 | 20 (100) | <0.001 | 1.000 |
| T3 n (%) | 19 (95) | >0.99 | 10 (50) | <0.001 | 0.003 |
| We defined pulmonary atelectasis to be significant if any region had a lung ultrasound score ≥2; then the patient was classified as having atelectasis. T1, before anesthesia induction; T2, at the end of the operation; T3, 30 min after extubation. Data are presented as (%) for the incidence of atelectasis. C group – control group; RM group – lung recruitment maneuver group; * test comparing differences within the individual study groups at successive times: T1 . T2, T2 . T3; ** Fisher’s exact test for comparisons between groups in each protocol step, with | |||||