Marsál K
Obstet Gynecol. 1978 Oct;52(4):394-401.
Ultrasonic real-time B-mode technique was used to record fetal breathing movements (FBM) in 100 consecutively examined women in late pregnancy. During the "inspiratory" phase of the FBM cycle, the diaphragm of the fetus contracts and moves in caudal direction. The diaphragmatic movement is accompanied by a retraction of the thorax with maximum inward movement of the lower sternum and by an expansion of the fetal abdomen. During "expiration" all structures return to their initial position. The incidence of FBM found in 24 pregnancies with various disorders was significantly lower than that in the 76 uncomplicated pregnancies (P less than 0.001). In 92% of the observations in which FBM were present for more than 5 minutes within 30-minute recording, this finding indicated an unaffected pregnancy at the time of the examination. No correlation was found between the FBM results and the subsequent course and outcome of the pregnancies.
采用超声实时B超技术对100例晚期妊娠妇女进行连续检查，记录胎儿呼吸运动（FBM）。在FBM周期的“吸气”阶段，胎儿的膈肌收缩并向尾侧移动。膈肌运动伴随着胸廓的回缩，下胸骨最大程度地向内移动，以及胎儿腹部的扩张。在“呼气”时，所有结构都恢复到初始位置。在24例患有各种疾病的妊娠中发现的FBM发生率明显低于76例无并发症妊娠中的发生率（P小于0.001）。在30分钟记录内FBM持续超过5分钟的观察中，92%的结果表明检查时妊娠未受影响。未发现FBM结果与随后的妊娠过程及结局之间存在相关性。
