Management of Stable Ventricular Tachycardia in Pregnancy

Acute Management

The European Society of Cardiology recommends immediate electrical cardioversion for all sustained VT in pregnant patients, regardless of hemodynamic stability 1
Synchronized cardioversion is the definitive treatment for both stable and unstable sustained VT in pregnancy, with the same energy dosing as non-pregnant patients 1
The American Heart Association suggests applying electrode pads with the energy trajectory directed away from the uterus during cardioversion 2
Fetal monitoring should be performed during cardioversion (if time allows) and immediately post-cardioversion 2
Cardioversion has been reported safe at all stages of pregnancy 1, 2

For sustained, hemodynamically stable, monomorphic VT, intravenous sotalol or procainamide are reasonable second-line options 1
Intravenous amiodarone should be considered only for VT that is refractory to electrical cardioversion or not responding to other drugs, despite its fetotoxic effects 1
The European Society of Cardiology guidelines prioritize immediate electrical cardioversion over pharmacological therapy as the primary approach, even in stable VT 1

For idiopathic sustained VT requiring chronic suppression, oral metoprolol, propranolol, or verapamil are first-line agents 1
Oral sotalol, flecainide, or propafenone should be considered if first-line agents fail 1
Beta-blockers should be used with caution in the first trimester 1
ICD implantation is recommended whenever clinically indicated during pregnancy, not delayed until after delivery 1

Beta-blocking agents are mandatory during pregnancy and postpartum for patients with long QT syndrome, as they provide major benefit in preventing torsade de pointes 1
Atenolol should never be used for any arrhythmia in pregnancy due to risk of intrauterine growth retardation 1, 4
Amiodarone should be avoided unless all other options have failed, due to significant fetotoxic effects including thyroid dysfunction and growth restriction 1, 3
Class III drugs should not be used in cases with prolonged QTc 1
Catheter ablation may be considered for drug-refractory and poorly tolerated tachycardias during pregnancy 1, 3