Elstein I D, Schwalbe S S, Marx G F
Department of Anesthesiology, Albert Einstein College of Medicine, Bronx, New York.
Obstet Gynecol. 1989 Sep;74(3 Pt 2):452-3.
In a gravida with a triplet gestation complicated by fainting attacks and transient episodes of apparently positional hypotension, cardiac output was measured noninvasively to determine the optimal posture during cesarean section. Before delivery, cardiac output and mean arterial pressure were highest in the left semilateral position and lowest in the right semilateral posture. Shortly after delivery of the infants, cardiac output was still highest in the left semilateral position but lowest in the supine posture. Twenty-four and 48 hours later, the values were almost identical in all three positions. Noninvasive cardiac output monitoring provided a simple method of detecting the occurrence and severity of caval compression and of determining the optimal position of the gravida during cesarean section.
对于一位怀有三胞胎且伴有昏厥发作和明显体位性低血压短暂发作的孕妇，通过无创测量心输出量来确定剖宫产期间的最佳体位。分娩前，心输出量和平均动脉压在左侧半卧位时最高，在右侧半卧位时最低。婴儿娩出后不久，心输出量仍在左侧半卧位时最高，但在仰卧位时最低。24小时和48小时后，在所有三个体位下这些数值几乎相同。无创心输出量监测提供了一种简单的方法，可检测腔静脉受压的发生和严重程度，并确定剖宫产期间孕妇的最佳体位。
