Related Experiment Video
Updated: Jun 13, 2026

Transesophageal Atrial Burst Pacing for Atrial Fibrillation Induction in Rats
Published on: February 14, 2022
Resumption of sinus rhythm from fetal complete atrioventricular block after maternally administered ritodrine
Abstract:
Reports have indicated that maternal administration of ritodrine increased the ventricular rate and thus ameliorated signs of heart failure in a fetus with complete atrioventricular block (CAVB). A fetus from a mother without the anti-SS-A/SS-B antibody had CAVB, with atrial rate 148-154 bpm and ventricular rate 53-57 bpm. After maternal administration of ritodrine, the ventricular rate increased to 60-65 bpm, and then sinus rhythm resumed. Ritodrine may not only increase the ventricular rate but also induce sinus rhythm in a fetus with CAVB.
Related Concept Videos
Dysrhythmias IV: Characteristics of Bradyarrhythmias
Cardiopulmonary Resuscitation IV: Pharmacological Management
Dysrhythmias VI: Management of Dysrhythmias
Disturbances in Heart Rhythm
Arrhythmias are categorized by their speed, rhythm, and origin. A slow heart...
Antiarrhythmic Drugs: Class II Agents as β-Adrenergic Blockers
Dysrhythmias VII: Nursing Management of Dysrhythmias