期刊
PACE-PACING AND CLINICAL ELECTROPHYSIOLOGY
卷 31, 期 -, 页码 S50-S53出版社
BLACKWELL PUBLISHING
DOI: 10.1111/j.1540-8159.2008.00957.x
关键词
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Complete atrioventricular block (CAVB) is the most common cause of persistent fetal bradycardia. In the presence of a structurally normal heart, it develops primarily in anti-Ro and anti-La positive antibody pregnancies,after 20 weeks of gestation. There is a significant risk of perinatal demise, particularly in association with fetal hydrops, poor ventricular function, and heart rates < 55 beats/min. Transplacental treatment strategies are aimed at preventing or modulating these risk factors. Maternal administration of dexamethasone to mitigate or prevent concomitant myocardial inflammation, in combination with stimulation for persistent fetal bradycardia < 55 beats/min to increase fetal cardiac output, has resulted in significantly improved fetal and neonatal outcomes without reversing CAVB.
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