Issel E P
Zentralbl Gynakol. 1986;108(17):1053-8.
Within systematic fetal supervision by CTG of the risk pregnancies sometimes single decelerations of variable type are observed. Most they didn't repeat. In the majority of the cases in follow up pregnancy the child will be born spontaneously without complications. In a lot of other cases, however, there appears fetal distress. For prognostic statistical evaluation of antenatal decelerations we watched prospectively the following groups: 1.43 cases with severe antenatal variable decelerations, 2.39 cases with mild antenatal variable decelerations, 3.88 cases without antenatal decelerations. - The appearance of severe decelerations was followed by fetal distress in 42%, by perinatal death in 12%, and by caesarean delivery in 40%. Fetal prognosis in this group is significantly more unfavourable than in the two other groups with mild decelerations (fetal distress 15%, caesarean section 23%, no fetal loss) or without decelerations (fetal distress 13%, caesarean section 10%, no fetal loss). - Single severe decelerations in antenatal CTG must be evaluated as a symptom of high fetal risk.
在对高危妊娠进行系统的胎儿监护过程中，有时会观察到可变型的单次减速。大多数情况下这种减速不会重复出现。在大多数后续妊娠病例中，胎儿会自然分娩且无并发症。然而，在许多其他情况下，会出现胎儿窘迫。为了对产前减速进行预后统计评估，我们前瞻性地观察了以下几组：1. 43例产前严重可变减速病例；2. 39例产前轻度可变减速病例；3. 88例无产前减速病例。严重减速出现后，42%的病例出现胎儿窘迫，12%的病例出现围产期死亡，40%的病例进行剖宫产。该组胎儿预后明显比另外两组更差，另外两组一组是轻度减速（胎儿窘迫15%，剖宫产23%，无胎儿死亡），另一组是无减速（胎儿窘迫13%，剖宫产10%，无胎儿死亡）。产前CTG出现的单次严重减速必须被视为胎儿高风险的症状。
