Management of Bradycardia in Dialysis Patients

Initial Assessment and Treatment Algorithm

The American Heart Association recommends administering atropine 0.5-1 mg IV immediately for symptomatic bradycardia, repeated every 3-5 minutes up to a maximum total dose of 3 mg, in dialysis patients 1, 2, 3
Atropine works by blocking muscarinic acetylcholine receptors, increasing sinus node automaticity and facilitating sinoatrial conduction with onset of action within 3 minutes 2
Dopamine is the preferred second-line agent for dialysis patients with bradycardia, starting at 5 mcg/kg/min IV and titrating up to 20 mcg/kg/min based on heart rate and blood pressure response 1, 2, 3
The American College of Cardiology recommends avoiding dopamine doses >20 mcg/kg/min due to risk of severe vasoconstriction and arrhythmias 1, 2, 3

Dialysis patients are at particular risk for BRASH syndrome (Bradycardia, Renal failure, AV nodal blockers, Shock, Hyperkalemia), which requires management beyond standard ACLS protocols 1, 2
The American Heart Association recommends checking potassium levels immediately in any dialysis patient presenting with bradycardia, and administering calcium gluconate and insulin-dextrose if hyperkalemia is present 1, 2
Urgent hemodialysis should be arranged for refractory hyperkalemia 1, 2

Atropine is likely ineffective for type II second-degree AV block or third-degree AV block with wide QRS complex, where the block is infranodal 3
The American College of Cardiology recommends proceeding directly to transcutaneous pacing or chronotropic infusions rather than giving repeated atropine doses in these cases 3
Beta-agonists (isoproterenol, dopamine, epinephrine) should be used with extreme caution if coronary ischemia is suspected, as increasing heart rate may worsen ischemia or increase infarct size 1, 2, 3