UNLABELLED:A Methodical Study:

AIM OF THE STUDY:To analyse the feasibility of colour and spectral Doppler assessment of blood flow in the fetal right (RPA) and left (LPA) main pulmonary arteries in relation to fetal position and to gestational age.

STUDY DESIGN:The fetal position was a priori divided into 3 types, depending on whether the fetal heart was visualised apically (Type 1), from the right side (Type 2) or from the left side (Type 3). Three groups A (19-25 weeks gestation), B (26-32) and C (33-39) including 33 consecutive pregnancies each, were examined to document the fetal position as well as the rate of the successful Doppler examinations of the RPA and/or LPA.

RESULTS:The fetal position Type 2 was most common throughout gestation (in group A = 42%, B = 36%, C = 51%) followed by the type 3 and then type 1. The rate of successful Doppler records from the RPA and LPA depended on the fetal position: In Type 2 RPA in 98%; in Type 3, LPA in 100%; but the apical approach was not effective (< 40%). Depending on gestational age, the success rates for a Doppler examination of at least one vessel were high (> 85%), whereas successful examination of both vessels was unlikely (12%).

CONCLUSIONS:In the second half of pregnancy, independent of fetal position, Doppler examination of at least one pulmonary artery is successful in most cases, whereas the assessment of both vessels is rather difficult.

译文

未标记 : 有条不紊的研究:
研究的目的 : 分析彩色和频谱多普勒评估胎儿右 (RPA) 和左 (LPA) 主肺动脉血流与胎儿位置和胎龄的可行性。
研究设计 : 根据胎儿心脏是从右侧 (2型) 还是从左侧 (3型) 可视化,先验地将胎儿位置分为3种类型。A组 (妊娠19-25周),B组 (26-32) 和C组 (33-39),每组33次连续怀孕,检查以记录胎儿位置以及RPA和/或LPA的成功多普勒检查率。
结果 : 2型胎儿位置在整个妊娠期间最常见 (A组 = 42%,B = 36%,C = 51%) 接着是类型3,然后是类型1。来自RPA和LPA的成功多普勒记录的速率取决于胎儿位置: 在2型RPA中98%; 在3型中,在100% 中LPA; 但是根尖方法无效 (< 40%)。根据胎龄的不同,对至少一个血管进行多普勒检查的成功率很高 (> 85%),而对两个血管的成功检查不太可能 (12%)。
结论 : 在怀孕的后半段,在大多数情况下,独立于胎儿位置,对至少一条肺动脉进行多普勒检查是成功的,而对两条血管的评估相当困难。

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