Epinephrine in the ICU: Precision Use of the Most Dangerous Life-Saver

This video provides a comprehensive, evidence-based review of epinephrine for critical care practice. It explains the pharmacology, dosing strategies, receptor physiology, hemodynamic effects, and clinical applications of one of the most powerful medications used in the ICU, ED, and peri-arrest environment.
Topics include alpha-1, beta-1, and beta-2 receptor activity; dose-dependent changes in cardiac output, systemic vascular resistance, heart rate, and myocardial oxygen consumption; and the metabolic impact of beta-2 stimulation, including type B lactic acidosis. The presentation highlights the difference between lactate elevation due to epinephrine versus lactate generated from impaired perfusion.
Dosing and preparation are reviewed in detail:
• Cardiac arrest management using 1 mg IV every 3–5 minutes (1:10,000 concentration)
• First-line anaphylaxis treatment with 0.3–0.5 mg IM (1:1,000 concentration)
• Continuous infusions in shock states, including initial dosing, titration ranges, and weight-based pediatric considerations
• Rationale for why epinephrine is often the first vasopressor to wean due to high myocardial oxygen consumption and arrhythmogenic potential
The video includes a visual comparison of epinephrine versus norepinephrine and dobutamine, with attention to arrhythmia risk, lactate effects, oxygen demand, and appropriate first-line indications. Specific clinical scenarios covered include refractory septic shock, cardiogenic shock with low cardiac output, post–cardiac surgery low-output states, cardiac arrest, anaphylaxis, severe bronchospasm, ARDS, and mechanical circulatory support (ECMO, Impella, IABP).
Additional advanced topics include extravasation management with phentolamine, central line considerations, risk stratification in peripheral vascular disease, and the interpretation of perfusion markers during epinephrine therapy.
[00:00] Welcome & Mixed α and β Agonism

[00:23] Endogenous Nature and Metabolism (COMT and MAO)

[00:42] Dose-Dependent Effects (Low Dose β, High Dose α)
[01:03] Indications (ACLS, Anaphylaxis, Refractory Shock)
[01:21] Therapeutic Advantages
[01:42] Dosing (Cardiac Arrest, Anaphylaxis, ICU Infusion)
[02:18] Physiologic Effects (HR, CO, MVO 2 , Organ Perfusion)
[02:37] Adverse Effects (Tachyarrhythmias, Ischemia, Lactic Acidosis)
[03:04] Hemodynamic Profile
[03:26] Comparison to Norepinephrine and Dobutamine
[03:51] Comparison to Dopamine
[04:14] Use in Septic Shock (Second-Line Adjunct)
[04:41] Use in Cardiogenic Shock (Short Bridge)
[05:07] Use with Mechanical Ventilation
[05:29] Use on ECMO, Impella, and IABP
[05:51] Use in Cardiac Arrest (ACLS)
[06:14] Use in Anaphylaxis
[06:40] Interpreting Lactic Acidosis (Type B vs. Hypoperfusion)
[07:05] Practical Setup and Safety (Central Line, Extravasation)
[07:25] Weaning Strategy
[07:31] Monitoring (A-line, ECG, Perfusion)

This masterclass is intended for ICU nurses, critical care physicians, APPs, emergency clinicians, anesthesia teams, transport teams, and learners seeking accurate, high-level understanding of epinephrine’s therapeutic role, limitations, and physiologic impact. Pulse & Pressors delivers clear, high-precision hemodynamic education to support expert-level decision-making.
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