Flecainide Use in Pregnancy and Lactation

Guideline Recommendations

• The American College of Cardiology/American Heart Association/HRS guidelines endorse flecainide for the management of supraventricular tachycardia in pregnant patients (Class IIa, Level C‑LD)【1】.
• The same ACC/AHA/HRS guidelines also support flecainide use during pregnancy (Class IIa, Level C‑LD)【2】.

Indications and Contraindications

• Flecainide is indicated for treatment of maternal and fetal tachyarrhythmias, but should be reserved for patients who do not have structural heart disease or ischemic heart disease, in line with its general prescribing recommendations【3】.