Source / episode info

• **Episode:**103
• **Title:**Divine Intervention Episode 103 – ABIM/Medicine ITE/Step 3 Review Series 5 (Cardiology 1)
• **Published:**2019-05-21
• Source:Episode page

One-liner

Episode 103 provides a comprehensive review of high-yield cardiology topics for board exams, emphasizing risk stratification in ACS workup, the systematic approach to stress testing (exercise vs. pharmacological), key murmurs and valvular pathology, and acute life-threatening syndromes like aortic dissection and cardiac tamponade.

High-yield summary

• ACS Risk Stratification: In patients with very high pre-test probability of CAD (e.g., HTN, HLD, DM, chest pain), proceed directly to coronary angiography; negative biomarkers do not rule out disease.
• Stress Testing Protocol: The primary decision is Can the patient exercise? If yes, use an exercise stress test. If no, use a pharmacological agent (e.g., Regadenoson, Dobutamine). A secondary decision involves avoiding ECG-based tests if underlying rhythm anomalies are present.
• Aortic Dissection: Classify using the Stanford system: Type A (involves ascending aorta) requires immediate surgery; Type B (descending only) is managed medically with blood pressure control.
• Cardiac Tamponade: Clinical triad includes hypotension, elevated JVD, and muffled heart sounds. ECG findings often include electrical alternans.
• Valvular Murmurs: Mitral Stenosis presents with a characteristic diastolic opening snap and is the strongest risk factor for Atrial Fibrillation (AFib). Aortic Regurgitation causes wide pulse pressure.

Learning objectives

• Differentiate the appropriate diagnostic pathway for Acute Coronary Syndrome based on clinical risk stratification.
• Select the correct type of stress test (exercise vs. pharmacological) based on patient physical limitations and underlying cardiac anomalies.
• Recognize the classic signs, pathophysiology, and immediate management of acute pericardial tamponade.
• Classify aortic dissections using the Stanford system and determine appropriate initial medical versus surgical management.
• Identify key valvular murmurs (e.g., Mitral Stenosis opening snap) and their associated risk factors.

Board exam buzzwords