Third degree AV block primary prevention
Patients with renal insufficiency, potassium electrolyte disturbances, and dehydration are predisposed to develop digoxin toxicity. Careful monitoring of electrolytes, drug levels, and renal function is essential in patients on chronic digoxin therapy. Patients on multiple nodal agents (e.g., beta-blockers and calcium channel blockers) are at an increased risk for the development of third-degree atrioventricular (AV) block (complete heart block). These patients should be carefully monitored for heart blocks.