Zimmer E Z, Paz Y, Copel J A, Weiner Z
Department of Obstetrics and Gynecology, Rambam Medical Center, Technion Faculty of Medicine, Haifa, Israel.
Am J Obstet Gynecol. 1998 Mar;178(3):436-40. doi: 10.1016/s0002-9378(98)70416-8.
Our goal was to assess the effect of uterine activity on fetal heart rate indexes during the active phase of labor with a computerized fetal heart rate monitoring system.
Twenty-six healthy women were studied in active labor without analgesia. Fetal heart rate was analyzed by a computerized system (Sonicaid, System 8000), providing a numeric analysis of the fetal heart rate indexes. Montevideo and Alexandria units were used for quantitative assessment of contractions.
A significant correlation was found between Montevideo units and short-term variation (r = -0.62, p < 0.001), episodes of high (r = -0.48, p < 0.01) and low (r = 0.58, p < 0.01) fetal heart rate variation, and frequency of large accelerations (r = -0.49, p < 0.01). A significant correlation was also found between Alexandria units and short-term variation (r = -0.645, p < 0.001), episodes of high fetal heart rate variation (r = -0.58, p < 0.01), and frequency of large accelerations (r = -0.49, p < 0.01).
In active labor fetal heart rate variability is significantly affected by the intensity and duration of contractions.
我们的目标是使用计算机化胎儿心率监测系统评估分娩活跃期子宫活动对胎儿心率指标的影响。
对26名未使用镇痛剂的活跃期健康孕妇进行研究。通过计算机系统（Sonicaid，8000系统）分析胎儿心率，该系统可对胎儿心率指标进行数值分析。使用蒙得维的亚单位和亚历山大单位对宫缩进行定量评估。
发现蒙得维的亚单位与短期变异性（r = -0.62，p < 0.001）、高胎儿心率变异性发作（r = -0.48，p < 0.01）和低胎儿心率变异性发作（r = 0.58，p < 0.01）以及大幅加速频率（r = -0.49，p < 0.01）之间存在显著相关性。亚历山大单位与短期变异性（r = -0.645，p < 0.001）、高胎儿心率变异性发作（r = -0.58，p < 0.01）以及大幅加速频率（r = -0.49，p < 0.01）之间也存在显著相关性。
在分娩活跃期，胎儿心率变异性受宫缩强度和持续时间的显著影响。
