Congenital complete A-V block associated with maternal chronic thyroiditis.

概要

論文の詳細を見る
A case of fetal complete A-V block was evaluated with ultrasonography in the mid trimester.A 32-year-old primigravida had received thyroxine for the last 3 years for chronic thyroiditis. Fetal bradycardia (ventricular rate 60 beats/min.) was noted at 22 weeks of gestation. The mother's laboratory data showed normal thyroid function, but various immunoserological abnormalities. By ultrasound cardiogram we diagnosed complete A-V block and no other cardiac anomalies in the fetus.The fetus showed normal growth, and had no signs of latent fetal distress or congestive heart failure during 24-37 weeks of gestation. We selected Cesarean Section for delivery, and a 3780gr, healthy female baby without cardiac failure was born at 37 weeks gestation. Postnatal examinations, including electrocardiograms, agreed with the prenatal diagnosis of complete A-V block without any anomalies (atrial rate 160 beats/min, ventricular rate 55-60 beats/min.)The bradycardia was not altered by any actions or by administration of Isoproterenol. We implanted a permanent pacemaker during open heart surgery (rate 110 beats/min.) 2 hrs, after birth. This procedure was successful, and the baby remains healthy.
近畿産科婦人科学会の論文