2369 results
Antiarrhythmics Pharmacology Summary
Cardiac Conduction Phases:
Phase 0 - Ventricular Depolarization:
 • Na+ channels open leading to a
Classification: CLASS ... duration - CLASS ... duration - CLASS ... & AP duration CLASS ... ) CLASS 4 - Calcium
Class I Antiarrhythmics and their Key Pharmacologic Properties

Class IA = Quinidine, Procainamide, Disopyramide ("Quarter PounDer")
Class IB
Class I Antiarrhythmics ... Properties Class ... Mayo, Pickle") Class ... involved in phase 3 repolarization ... • Prolongs repolarization
Antiarrhythmics - Vaughan Williams Classification:
CLASS 1 - Sodium Channel Blockers:
 • MOA: Block fast Na+ channels
Classification: CLASS ... and magnitude of depolarization ... prolong AV node repolarization ... interval (delays time repolarization ... prolong AV node repolarization
Antiarrhythmics - Vaughan Williams Classification
Class I (Ia, Ib, Ic) - Na+ Channel Blockade
 • Slows depolarization
Classification Class ... Blockade • Slows depolarization ... Widens QRS complex Class ... Blockade • Slows depolarization ... Blockade • Slows depolarization
Hyperkalemia shortens repolarization; changes in the T wave provide the earliest clues to hyperpotassemia.
 - At
Hyperkalemia shortens repolarization ... 6.0 mEq/L, rapid repolarization ... causes peaked T ... in conduction causes ... wave to produce classic
Deep T Wave Inversions - Differential
Normal variants 
  A. Juvenile T wave pattern
Early repolarization ... Differential #Diagnosis #Causes
Hypertrophic Cardiomyopathy (HOCM) - EKG Characteristics
Typical EKG findings may include:
 • Deep and narrow Q waves
with widespread repolarization ... HOCM #EKG #ecg #clinical
Web chart of etiologies related to inflammatory head and neck masses.

#pediatrics #peds #differential #causes #pearls #head
head and neck masses ... #differential #causes ... pearls #head #neck #masses ... viral #bacterial #clinical
Acute Pulmonary Embolism - Labeled POCUS Findings 

This patient presented with a-fib and shortness of breath.
Embolism - Labeled POCUS ... This POCUS illustrates ... some of the classic ... McConnells #Sign #Clinical ... #POCUS #Echocardiogram
Pacemaker Operating Modes
1 - Chamber paced
     A (atrium), V (ventricle), D (dual/both)
2
response has no clinical ... or paced atrial depolarization ... after ventricular depolarization ... to an intrinsic depolarization ... order to initiate depolarization