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  • Title: [Cardiac arrhythmias in pregnancy].
    Author: Trappe HJ, Pfitzner P.
    Journal: Z Kardiol; 2001; 90 Suppl 4():36-44. PubMed ID: 11373942.
    Abstract:
    Atrial premature beats are frequently diagnosed during pregnancy (PR), supraventricular tachycardia (SVT; atrial tachycardia, AV nodal reentrant tachycardia, circus movement tachycardia) less frequently. For acute therapy, electrical cardioversion with 50-100 J is indicated in all unstable patients (pts). In stable SVT the initial therapy includes the vagal maneuver to terminate breakthrough tachycardias. For short-term management, when the vagal maneuver fails, intravenous adenosine is the first-choice drug and may safely terminate the arrhythmia. For long-term therapy, beta-blocking agents with beta 1 selectivity are first-line drugs; class Ic agents or the class III drug sotalol (sot) are effective and therapeutic alternatives. Ventricular premature beats are also frequently present during PR and benign in most pts; however, malignant ventricular tachyarrhythmias (sustained ventricular tachycardia [VT], ventricular flutter [VFlut], ventricular fibrillation [VF]) were observed less frequently. Electrical cardioversion is necessary in all pts with a hemodynamically unstable situation and life-threatening ventricular tachyarrhythmias; in hemodynamically stable pts, initial therapy with ajmaline, procainamide or lidocaine is indicated. If prophylactic therapy is needed, beta-blocking agents with beta 1 selectivity are considered as first-choice drugs. If this therapy is ineffective, class Ic agents or sot can be considered. In pts with syncopal VT, VF, VFlut or aborted sudden death an implantable cardioverter-defibrillator is indicated. In pts with symptomatic bradycardia, a pacemaker can be implanted using echocardiography at any stage of PR. The treatment of the pregnant patient with cardiac arrhythmias requires important modification of the standard practice of arrhythmia management. The goal of therapy is to protect the patient and fetus through delivery, after which chronic or definitive therapy can be administered.
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