2025 Multiprofessional Critical Care Review: Adult Online-Acute Coronary Syndromes

Video Transcription

Video Summary

This detailed lecture on acute coronary syndromes (ACS) discusses diagnosing and managing myocardial infarction (MI), especially in ICU settings. It emphasizes that many myocardial injuries in ICU patients are due to non-ischemic causes, such as inflammation or trauma, rather than true MI. Type 1 MI results from plaque rupture causing acute thrombosis, further classified into STEMI (with ST elevation) and NSTEMI (without ST elevation). Diagnosing MI in ICU is challenging due to atypical symptoms and ubiquitous troponin elevations from other causes, requiring careful clinical, ECG, and imaging assessment.<br /><br />Management of STEMI requires urgent reperfusion via PCI within 90 minutes or thrombolytics if PCI is unavailable; NSTEMIs have a more flexible timeline unless unstable. Medical therapy includes aspirin immediately, addition of P2Y12 inhibitors, anticoagulants (usually heparin), and consideration of beta blockers (only if low EF, arrhythmias, or angina), ACE inhibitors/ARBs, MRAs, and statins. Mechanical complications post-MI, though rare due to early reperfusion, require surgical repair and often mechanical circulatory support.<br /><br />Cardiogenic shock, often from systolic dysfunction after MI, demands rapid recognition—even in subtle presentations—and prompt ICU care with vasoactive support (norepinephrine first-line), echocardiography for assessment, and early coronary intervention. Mechanical circulatory support devices like Impella reduce mortality in refractory shock, despite risks (e.g., kidney injury) and high cost. The lecture highlights updated evidence and protocols for acute MI and shock management, focusing on timely diagnosis, stratified treatment, and multidisciplinary care.

Keywords

acute coronary syndromes

myocardial infarction

ICU myocardial injury

STEMI and NSTEMI

reperfusion therapy

cardiogenic shock management

mechanical circulatory support

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