title: Rate-based management of fetal supraventricular tachycardia.
abstract: We reviewed the ultrasonographic studies and the clinical course of 22 fetuses with supraventricular tachycardia to determine whether the heart rate alone could serve as a basis for conservative management. Hydrops was not encountered with heart rates under 230 beats per minute. The conditions of all 22 fetuses stabilized without invasive administration of medications. Eighteen were delivered vaginally and only four by cesarean section. No fetal or neonatal losses occurred. Regardless of the type of supraventricular tachycardia, reducing heart rate in these fetuses to levels preventing or resolving hydrops allowed term vaginal delivery, thereby reducing the substantial problems of ventilating an immature or hydropic neonate.
authors: Department of Pediatrics (Cardiology), University of Washington School of Medicine, Seattle 98195-6320, USA.
authors: W G
authors: WG
authors: Guntheroth
authors: D R
authors: DR
authors: Cyr
authors: L E
authors: LE
authors: Shields
authors: H V
authors: HV
authors: Nghiem
mesh_terms: D000889:Anti-Arrhythmia Agents / Q000627:therapeutic use*; D004077:Digoxin / Q000627:therapeutic use*; D018618:Echocardiography, Doppler, Color / Q000379:methods; D005260:Female; D005315:Fetal Diseases / Q000000981:diagnostic imaging / Q000188:drug therapy* / Q000503:physiopathology; D005865:Gestational Age; D006340:Heart Rate, Fetal; D006801:Humans; D015160:Hydrops Fetalis / Q000517:prevention & control; D011247:Pregnancy; D011256:Pregnancy Outcome; D011802:Quinidine / Q000627:therapeutic use*; D012189:Retrospective Studies; D013617:Tachycardia, Supraventricular / Q000000981:diagnostic imaging / Q000188:drug therapy* / Q000503:physiopathology; D016896:Treatment Outcome; D016216:Ultrasonography, Prenatal
chemical_list: D000889:Anti-Arrhythmia Agents; D004077:Digoxin; D011802:Quinidine