Comparison of effects of different positioning and puncture methods for epidural anesthesia in obese parturients undergoing cesarean section
10.3760/cma.j.cn131073.20240714.01214
- VernacularTitle:肥胖孕产妇剖宫产术椎管内麻醉时不同定位及穿刺方式效果的比较
- Author:
Gaofeng GUO
1
;
Lidong DOU
1
;
Mingzhu CUI
1
;
Jiaqiang ZHANG
1
;
Xiongfei RONG
1
Author Information
1. 河南省人民医院麻醉与围术期医学科，郑州 450003
- Publication Type:Journal Article
- Keywords:
Pregnancy-related obesity;
Cesarean section;
Anesthesia, spinal;
Positioning markers;
Puncture technique
- From:
Chinese Journal of Anesthesiology
2024;44(12):1470-1475
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To compare the effects of different positioning and puncture methods for epidural anesthesia in obese parturients undergoing cesarean section.Methods:In this prospective, randomized, controlled study, 175 obese parturients, of American Society of Anesthesiologists Physical Status classification Ⅰ or Ⅱ, with a body mass index of > 30 kg/m 2, who underwent elective cesarean section with epidural anesthesia at Henan Provincial People′s Hospital from July 2023 to April 2024, were selected and assigned into 4 groups using a random number table method: palpation positioning + median approach to puncture group (PM group, n=44), body surface marker positioning + paramedian approach to puncture group (BP group, n=43), ultrasound-assisted positioning + paramedian approach to puncture group (UP group, n=45), and ultrasound-assisted positioning + ultrasound-guided in-plane approach to puncture group (UU group, n=43). The procedures were performed by anesthesiology residents skilled in the four different epidural anesthesia positioning and puncture methods. Main observation indicators: success rate of puncture at first attempt and total success rate of puncture. Secondary observation indicators: the number of puncture, changes in puncture interspaces, positioning time, puncture time, anesthesia operation time, postoperative nausea and vomiting, sensory abnormalities at the puncture site, bleeding at the puncture site, maternal satisfaction rates, and occurrence of low back pain at day 7, 1 month, 2 months, and 3 months postoperatively. Results:In this study, 2 cases were excluded from PM group, 2 from BP group, 2 from UP group, and 2 from UU group. The total success rates of puncture were as follows: 95% (40/42) in PM group, 98% (40/41) in BP group, 93% (40/43) in UP group, and 98% (40/41) in UU group. There was no significant difference in the total success rates of puncture among the four groups ( P>0.05). Compared to PM group, the success rate of puncture at first attempt was significantly increased, the rate of changes in puncture interspaces was decreased, the positioning time was shortened, the incidence of nausea and vomiting was decreased, satisfaction rates were increased, and the incidence of low back pain was reduced at 7 days after operation in BP group; the success rate of puncture at first attempt was significantly increased, the number of puncture was reduced, the rate of changes in puncture interspaces was decreased, the positioning time, puncture time and anesthesia operation time were shortened, the satisfaction rates were increased, and the incidence of low back pain was decreased at 7 days after operation in UP group; the rate of changes in puncture interspaces was significantly decreased, and the positioning time was shortened in UU group ( P<0.05). Compared to BP group, the puncture time was significantly shortened in UP group, and the number of puncture was significantly increased, the anesthesia operation time was prolonged, the incidence of nausea and vomiting was increased, and the satisfaction rate was decreased in UU group ( P<0.05). Compared to UP group, the success rate of puncture at first attempt was significantly decreased, the number of puncture was increased, the puncture time and anesthesia operation time were prolonged, the incidence of nausea and vomiting was increased, and the satisfaction rates were decreased in UU group ( P<0.05). Conclusions:Ultrasound-assisted positioning combined with the paramedian approach to puncture can raise the success rate of puncture at first attempt, reduce the development of puncture-related complications, and increase the maternal satisfaction in obese parturients undergoing cesarean section.
