Epinephrine Dosing for Acute Hypotension in the Cath Lab

Monitoring and Administration

• Blood pressure should be monitored every 5-15 minutes during initial titration, and continuous cardiac monitoring for arrhythmias should be performed, according to Praxis Medical Insights 1, 2
• Tissue perfusion markers such as capillary refill, urine output, and mental status should be assessed, as recommended by Praxis Medical Insights 1

Clinical Context for Epinephrine Addition

• Epinephrine should be added to norepinephrine when norepinephrine reaches 0.25 mcg/kg/min and hypotension persists, or for refractory hypotension despite adequate fluid resuscitation, according to Praxis Medical Insights 1, 3
• In the context of perioperative allergic reactions (Grade III-IV) where vasopressors are insufficient, epinephrine may be considered, as suggested by the British Journal of Anaesthesia 4

Critical Pitfalls to Avoid

• Volume status should be addressed before starting epinephrine, with at least 30 mL/kg crystalloid bolus, as recommended by Praxis Medical Insights 1, 3
• Epinephrine should not be mixed with sodium bicarbonate or other alkaline solutions, as adrenergic agents are inactivated in alkaline solutions, according to Praxis Medical Insights 1

Special Considerations for Cath Lab Setting

• Epinephrine should be used cautiously in patients with ischemic heart disease, as it increases myocardial oxygen consumption, as noted by Praxis Medical Insights 2
• Alternative vasopressor options such as phenylephrine or vasopressin may be considered if arrhythmias develop with epinephrine, according to Praxis Medical Insights 1