Source / episode info
- **Episode:**181
- **Title:**Divine Intervention Episode 181 – Comprehensive NBME Emergency Medicine Shelf Review Series 1.
- **Published:**2019-11-03
- Source:Episode page
One-liner
This episode comprehensively reviews high-yield EM topics including AV block management (Mobitz types), SVT/VT protocols, classic murmurs (MVP, AS, AR, VSD, PDA), differentiating HCM from AS, managing CHF exacerbations with NIPPV and Milrinone, and classifying syncope.
High-yield summary
- AV Blocks: Mobitz II and 3rd degree blocks require pacing (transcutaneous -> transvenous); Mobitz I generally does not require treatment.
- SVT Management: Initial management involves vagal maneuvers or Adenosine; stable patients are treated with cardioversion, while unstable patients require immediate synchronized cardioversion/defibrillation.
- CHF Exacerbation: The initial drug of choice for dyspnea relief is Nitroglycerin (a venodilator that decreases preload); advanced support includes NIPPV (CPAP/BiPAP) to decrease work of breathing and improve hemodynamics.
- HCM vs AS Murmur: In HCM, increasing preload softens the murmur; in AS, increasing preload makes the murmur louder because it increases flow across the stenotic valve.
- Right vs Left Heart Failure: Right heart failure presents with elevated CVP but normal PCWP; left heart failure presents with pulmonary edema and an elevated PCWP (>18 mmHg).
Learning objectives
- Differentiate between various types of Atrioventricular (AV) blocks and determine appropriate pacing needs.
- Initiate management for stable and unstable Supraventricular Tachycardia (SVT) using pharmacological agents and cardioversion.
- Apply the principles of right vs. left heart failure to interpret hemodynamic data (CVP, PCWP).
- Master the differential diagnosis and physical exam findings distinguishing HCM from Aortic Stenosis.
- Select appropriate advanced therapies for CHF exacerbation, including NIPPV and vasopressors like Milrinone.
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