La frecuencia cardiaca en fetos con circular de cordón

Objective: To determine heart rate and the frequency of type i and ii dips in fetuses with coiling of funis. Study design: There were 40 patients in the sample, divided in two groups: group 1: consisted of 20 pregnant women with a diagnosis of coiling of funis; group ii consisted of 20 patients with a normal pregnancy. Fetal heart rate (HR) and uterine contractility were recorded for 2hours. For the statistical analysis, the SPSS^® package, Z-score and Student's t-test were used. Results: Fetal HR was 138 beats/min in group 1 and 135 beats/min in group ii. The difference between medians (Z-. score) was 8.65, which was significant (P<.01).Amplitude and accelerations were calculated in both groups, with similar results (24 beats). The difference in means was not significant.The mean weight and height were compared in the two groups. Mean weight was 3,100. g in group 1 and 2,960 in group 1, while mean height was 50.72. cm in group i and 49.77 in group 2. The difference in means was not significant.Apgar tests were performed in both groups. In group 1, Apgar scores ranged from 7-9 at 1. minute and from 8-9 at 5. minutes. Values were similar in group 2.Type i dips gave a reading of 3, and type ii dips a reading of 2 (one with marked height and duration). No type iii dips were observed. No meconium was found in any of the deliveries. Conclusions: In pregnancies with loosely coiled funises, there were no significant changes in fetal HR. In pregnancies with tightly coiled funises, type ii dips with wide amplitude and marked duration were found.