42 results
Approach to ECGs - VT vs. SVT - Wide Tachycardias
DDx = VT vs. SVT with BBB
All
VT: - No RS complexes ... entirely positive or negative ... positive in aVR and negative ... - Very broad complexes ... Versus #ecg #ekg #cardiology
VT versus SVT with Aberration - Interpretation Cheat Sheet

Features favouring VT
● Absence of typical RBBB or
beats (hybrid complex ... ● Positive or negative ... (QS) complexes. ... Positive or negative ... Comparison #Diagnosis #Cardiology
R Wave Progression - normal chest lead ECG shows an rS-type complex in lead V1 with
shows an rS-type complex ... increase in the relative ... #Diagnosis #Cardiology
Antiarrhythmics - Vaughan Williams Classification
Class I (Ia, Ib, Ic) - Na+ Channel Blockade
 • Slows depolarization
• Widens QRS complex ... Classification #Classes #cardiology ... #pharmacology
Posterior Elbow Dislocation
The elbow is the second most commonly dislocated major joint in adults and the
location of olecranon relative ... = no fracture, complex ... and reduction; Complex ... simple; Yes, if complex ... Dislocation #Posterior #Radiology
Abscess and Cobblestoning on POCUS

Cobblestoning of inflamed fat (“hot” cobblestoning!) and an echogenic abscess. This should
Cobblestoning on POCUS ... discharge with antibiotics ... Cobblestoning #POCUS ... cellulitis #ultrasound #radiology
Torsades de Pointes
• "Twisting of the pointes" 
• QRS axis swings from positive to negative direction
from positive to negative ... Originates from single focus ... TorsadesDePointes #Diagnosis #Cardiology
Antiarrhythmics Pharmacology Summary
Cardiac Conduction Phases:
Phase 0 - Ventricular Depolarization:
 • Na+ channels open leading to a
Antiarrhythmics Pharmacology ... to maintain a negative ... contraction force (negative ... inotropy) ACCP Cardiology ... pathophysiology #phases #cardiology
Cholecystitis with Pericholecystic Fluid on POCUS

Why POCUS is so important. Instead of waiting for radiology ultrasound
Pericholecystic Fluid on POCUS ... Why POCUS is ... of waiting for radiology ... Complete with pericholecystic ... Pericholecystic #Fluid #POCUS
Antiarrhythmics - Vaughan Williams Classification:
CLASS 1 - Sodium Channel Blockers:
 • MOA: Block fast Na+ channels
contraction force (negative ... inotropy) ACCP Cardiology ... Vaughan #Williams #Pharmacology ... pathophysiology #cardiology