Critical Care Time 36. Inotropes
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Nov 4, 2024 Dive into the fascinating world of inotropes, key players in managing cardiogenic shock. Discover how different inotropic agents, like catecholamines, enhance cardiac performance and the importance of calcium in critical care. Unravel the complexities of cardiac output and hemodynamics while navigating real-life case studies, including challenging scenarios like pulmonary embolism. Learn to differentiate between inotropes and ionotropes, and get insights into effective pacing strategies. Join a lively discussion that blends education and engagement!
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Epinephrine Use Cases
- Epinephrine, used in ACLS, is a potent inotrope and vasoconstrictor, increasing heart rate and SVR.
- Consider it for cardiogenic shock (especially post-cardiac surgery) with low SVR, bradycardia, or anaphylaxis.
Milrinone Advantages
- Milrinone, a PDE3 inhibitor, increases contractility and vasodilates, but causes less tachycardia than beta-agonists.
- It's beneficial for acute decompensated heart failure (especially in patients on beta-blockers), cardiogenic shock with high PVR, and RV failure.
Calcium and Inotropes
- Check ionized calcium, especially in critical illness, as it potentiates inotropes and can itself be an inotrope.
- Give calcium if ionized levels are low (especially < 0.6), with calcium chloride being more potent due to higher calcium content.