Fetal heart rate patterns in placenta abruption

doi:10.3877/cma.j.issn.2095-3259.2020.03.009

Abstract

Abstract:

Objective

To explore the abnormal fetal heart rate (FHR) monitoring in cases of placenta abruption.

Methods

A retrospective analysis was conducted in 56 pregnant women with placental abruption in The First Affiliated Hospital of Sun Yat-sen University from January 2015 to November 2019.

Results

Undetectable acceleration, minimal variability, variable deceleration and abnormal uterine contraction appeared more common in abnormal FHR tracings cases of placental abruption. The incidence of minimal variability was higher in no-labor group than labor group, and the differences were significant(χ²=12.07, P<0.01). Prolonged deceleration appeared significantly more frequently in labor group than in no-labor group(χ²=12.74, P<0.01). The incidence of abnormal uterine contraction was significantly higher in diagnosis-before group than in diagnosis-after group(χ²=14.54, P<0.01), whereas the pattern of variable deceleration was more frequent in diagnosis-after group (χ²=5.73, P=0.02).

Conclusions

Accurate interpretation of fetal heart rate monitoring is helpful to early detection of placental abruption. When minimal variability, prolonged deceleration or abnormal uterine contraction appear, we should be alert to the occurrence of placental abruption.

Key words: Placenta abruption, Fetal heart rate monitoring, Diagnosis

Zhuyu Li, Zilian Wang. Fetal heart rate patterns in placenta abruption[J]. Chinese Journal of Obstetric Emergency(Electronic Edition), 2020, 09(03): 170-174.

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References 15

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分组	例数	胎心过缓	胎心过速	变异缺失	微小变异	无加速	变异减速	晚期减速	延长减速	正弦波形	宫缩波异常
未临产组	31	2(6.5)	3(9.7)	2(6.5)	16(51.6)	29(93.5)	9(29)	10(32.3)	2(6.5)	1(3.2)	9(29)
临产组	25	5(20.0)	0(0.0)	0(0.0)	2(8.0)	24(96.0)	8(32)	6(24.0)	12(48)	0(0.0)	7(28)
χ²值		-	-	-	12.07	-	0.06	0.46	12.74	-	0.01
P值		0.22^a	0.25^a	0.50^a	<0.01	1^a	1	0.56	<0.01	1^a	1

分组	例数	胎心过缓	胎心过速	变异缺失	微小变异	无加速	变异减速	晚期减速	延长减速	正弦波形	宫缩波异常
未临产组	31	2(6.5)	3(9.7)	2(6.5)	16(51.6)	29(93.5)	9(29)	10(32.3)	2(6.5)	1(3.2)	9(29)
临产组	25	5(20.0)	0(0.0)	0(0.0)	2(8.0)	24(96.0)	8(32)	6(24.0)	12(48)	0(0.0)	7(28)
χ²值		-	-	-	12.07	-	0.06	0.46	12.74	-	0.01
P值		0.22^a	0.25^a	0.50^a	<0.01	1^a	1	0.56	<0.01	1^a	1

分组	例数	胎心过缓	胎心过速	变异缺失	微小变异	无加速	变异减速	晚期减速	延长减速	正弦波形	宫缩波异常
产前诊断组	30	2(6.7)	2(6.7)	2(6.7)	8(26.7)	28(93.3)	5(16.7)	6(20.0)	5(16.7)	0(0.0)	15(50.0)
产前漏诊组	26	5(19.2)	1(3.8)	0(0.0)	10(38.5)	25(96.2)	12(46.2)	10(38.5)	9(34.6)	1(3.8)	1(3.8)
χ²值		-	-	-	0.89	-	5.73	0.33	2.39	-	14.54
P值		0.23^a	1^a	0.49^a	0.40	1^a	0.02	0.15	0.14	0.46^a	<0.01

分组	例数	胎心过缓	胎心过速	变异缺失	微小变异	无加速	变异减速	晚期减速	延长减速	正弦波形	宫缩波异常
产前诊断组	30	2(6.7)	2(6.7)	2(6.7)	8(26.7)	28(93.3)	5(16.7)	6(20.0)	5(16.7)	0(0.0)	15(50.0)
产前漏诊组	26	5(19.2)	1(3.8)	0(0.0)	10(38.5)	25(96.2)	12(46.2)	10(38.5)	9(34.6)	1(3.8)	1(3.8)
χ²值		-	-	-	0.89	-	5.73	0.33	2.39	-	14.54
P值		0.23^a	1^a	0.49^a	0.40	1^a	0.02	0.15	0.14	0.46^a	<0.01

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