一名受孕33週的胎兒於産前檢查被發現有心跳過快的現象,經胎兒心臟超音波檢查,發現其每分鍾心跳約為心房400次,心室200次,呈規則的2比1心房撲動節律。我們乃對該孕婦投以口服毛地黃,數天後,胎兒心跳即回復正敘。個案在足月時産出,心電圓檢查記錄爲正常心房竇節律合併第一度房室傅導阻滯。心臟超音波檢查出一不完全型的三心房先天性心臟異常。目前追蹤複查中,情況良好。
A fetus suffering from tachycardia of more than 200 beats per minute was found to have an atrial flutter with two-to-one atrioventricular conductional block by the fetal ultrasonogram at 33 weeks of gestation. The tachycardia was successfully converted to sinus rhythm with maternal digitalization. The heart rate stayed in a normal sinus rhythm after the baby was born, however, an incomplete form of cor triatriatum was noted on the echocardiogram examination.