Department of Anesthesia, Foothills Medical Center, AlbertaHealth Services, Calgary, Alberta, Canada.
Int J Obstet Anesth. 2012 Apr;21(2):135-9. doi: 10.1016/j.ijoa.2011.10.010. Epub 2012 Feb 11.
This study was conducted to assess the feasibility of measuring intra-abdominal pressure in term parturients under spinal anesthesia.
Intra-abdominal pressure was measured in 20 term parturients after spinal anesthesia for elective caesarean section. Pressure was measured in the supine and 10° left lateral tilt positions with a constant reference point throughout.
Intra-abdominal pressure measurement was feasible and safe to perform. Pressure was significantly lower in the left lateral tilt position than supine (10.9 mmHg ± 4.67 vs. 8.9 mmHg ± 4.87, P=0.0004). The range of intra-abdominal pressure in pregnancy was wide, from 2 to 20 mmHg, with >25% of patients resting with pressures above 12 mmHg in both positions.
Under spinal anesthesia, intra-abdominal pressure in >25% of healthy term parturients was > 12 mmHg, which has conventionally been defined as intra-abdominal hypertension. The intra-abdominal pressure in term pregnancy should be performed in the left lateral tilt position to avoid falsely elevated pressure measurements.
本研究旨在评估在脊髓麻醉下测量足月产妇腹腔内压力的可行性。
对 20 例因择期剖宫产而接受脊髓麻醉的足月产妇进行了腹腔内压力测量。在仰卧位和 10°左侧倾斜位测量压力，整个过程中保持恒定的参考点。
腹腔内压力测量是可行且安全的。左侧倾斜位的压力明显低于仰卧位（10.9mmHg±4.67 与 8.9mmHg±4.87，P=0.0004）。妊娠期间的腹腔内压力范围很广，从 2mmHg 到 20mmHg，>25%的患者在两种体位下休息时的压力均高于 12mmHg。
在脊髓麻醉下，>25%的健康足月产妇的腹腔内压力>12mmHg，这通常被定义为腹腔内高压。在足月妊娠时应在左侧倾斜位进行腹腔内压力测量，以避免压力测量值偏高。
