晚期妊娠左侧卧位的循证护理研究

Evidence-based nuring of left lateral decubitus in late pregnancy

为了探讨孕妇妊娠晚期左侧卧位的必要性,对31例晚期妊娠孕妇和25例年龄相仿的未孕妇女用心率变异谱分析进行研究;比较她们在仰卧位、右侧和左侧卧位时心率变异性的时域和频域分析资料,结果表明,未孕妇女标化的高频功率在右侧卧位时最大。而孕妇在仰卧位时标化的高频功率最低;并且低频与高频功率之比最大。因此,左侧卧位对晚期妊娠是有益的,因为心迷走神经张力的降低和心交感神经兴奋性的增加最小。

To investigated the necessity of the left lateral position in late pregnancy, 31 pregnant and 25nonpregnant aged-matched women were studied by heart rate variablilty. Both time and frequency domains werecompared in supine, right and left lateral decubitus positions. The results showed that the normalized high-frequency power was greatest in the right lateral decubitus position for the nonpregnant women,In the pregnantwomen,the normalized high-frequency power was lowest and the low/high-frequency power ratio...