Digoxin Use in Pulmonary Hypertension

Current Recommendations for Pulmonary Hypertension

The European Society of Cardiology recommends digoxin to slow ventricular rate in patients with pulmonary arterial hypertension who develop atrial tachyarrhythmias 1
The efficacy of digoxin in improving cardiac output in idiopathic pulmonary arterial hypertension is supported by evidence, although its chronic use is unknown 1
First-line therapies for pulmonary arterial hypertension include calcium channel blockers, endothelin receptor antagonists, phosphodiesterase-5 inhibitors, and prostacyclin pathway agents, with digoxin considered for specific situations such as atrial arrhythmias 1

The American Heart Association suggests initiating digoxin therapy at 0.125 to 0.25 mg daily for pulmonary hypertension patients, primarily for atrial fibrillation or right heart failure 2
Lower doses, such as 0.125 mg daily or every other day, are recommended for patients over 70 years old, those with impaired renal function, or those with low lean body mass 2
Target serum concentration should be maintained between 0.5-0.9 ng/mL 2

The American Heart Association advises against giving digoxin to patients with significant sinus or atrioventricular block unless they have a permanent pacemaker 4
Digoxin should be used cautiously in patients taking medications that can affect digoxin levels or depress AV nodal function, such as amiodarone or beta-blockers 4
The risk of digoxin toxicity increases with hypokalemia, hypomagnesemia, or hypothyroidism 2

The European Society of Cardiology recommends considering digoxin only after optimizing pulmonary arterial hypertension-specific therapies and standard supportive care 1
If atrial fibrillation develops in pulmonary arterial hypertension patients, beta-blockers are usually more effective for rate control, with digoxin considered as an adjunctive agent 5
Regular monitoring of serum digoxin levels, renal function, and electrolytes is necessary if digoxin is prescribed 2