Treatment of Beta Blocker Induced Bradycardia

Initial Assessment and Management

The American College of Cardiology recommends evaluating patients with beta blocker induced bradycardia for symptoms, such as dizziness, lightheadedness, and syncope, and hemodynamic compromise, including hypotension and shock 3
The American Heart Association suggests discontinuing the beta blocker if possible, and monitoring vital signs continuously, including heart rate, blood pressure, and oxygen saturation 4, 1
Establishing reliable IV access for medication administration is crucial, as recommended by the American College of Cardiology 1

The American College of Cardiology recommends glucagon as first-line therapy for symptomatic beta blocker-induced bradycardia, with a dosing regimen of 3-10 mg IV bolus followed by infusion of 3-5 mg/hour 1, 3
Glucagon activates hepatic adenyl cyclase, bypassing beta-receptor blockade, and common side effects include nausea and vomiting, as noted by the American Heart Association 1

The American College of Cardiology suggests high-dose insulin therapy as a reasonable option when bradycardia persists despite glucagon, with a dosing regimen of 1 unit/kg IV bolus followed by infusion of 0.5-1 units/kg/hour 1, 3, 5
Concurrent dextrosa administration is recommended, with a bolus of 0.5 g/kg followed by 0.5 g/kg/hour, and monitoring of glucose and potassium levels is essential, as recommended by the American Diabetes Association 5

The American College of Cardiology recommends considering vasopressors/inotropes, such as epinephrine, dopamine, and dobutamine, for persistent hypotension, with dosing regimens of 2-10 mcg/min IV or 0.1-0.5 mcg/kg/min IV for epinephrine, and 5-20 mcg/kg/min IV for dopamine 1, 3

The American Heart Association suggests considering calcium administration, primarily indicated for calcium channel blocker toxicity, but potentially beneficial in combined beta blocker and calcium channel blocker toxicity, with dosing regimens of 1-2 g IV every 10-20 min or infusion of 0.2-0.4 mL/kg/h for calcium chloride 1, 3

The American College of Cardiology recommends considering temporary cardiac pacing when pharmacologic therapy fails to restore adequate heart rate 4

The American Heart Association recommends continuous cardiac monitoring for heart rate and rhythm, frequent blood pressure measurements, and regular assessment of mental status and peripheral perfusion 1
Glucose monitoring is essential when using high-dose insulin therapy, as recommended by the American Diabetes Association 5
Potassium monitoring is also crucial during insulin therapy, with target potassium levels of 2.5-2.8 mEq/L, as noted by the American College of Cardiology 5