1929 results
Action potential in cardiomyocytes
The action potential in typical cardiomyocytes is composed of 5 phases (0-4), beginning
phase Phase 0: Depolarization ... Phase 1: Early repolarization ... phase Phase 3: Repolarization ... Myocytes #Phases #Depolarization ... #Repolarization
Antiarrhythmics Pharmacology Summary
Cardiac Conduction Phases:
Phase 0 - Ventricular Depolarization:
 • Na+ channels open leading to a
- Ventricular Depolarization ... - Ventricular Repolarization ... • Atrial depolarization ... and magnitude of depolarization ... phase 4 to slow depolarization
Pacemaker Evaluation Algorithm by Lorne Costello

#Diagnosis #ECG #EKG #Pacemaker #Evaluation #Algorithm #PPM
Pacemaker Evaluation ... Algorithm by Lorne ... Diagnosis #ECG #EKG #Pacemaker ... #Evaluation #Algorithm
Differential Diagnosis for ST Segment Elevations
 - ACUTE STEMI 
 - PULMONARY EMBOLISM 
 - LBBB
EMBOLISM - LBBB (PACEMAKER ... - BENIGN EARLY REPOLARIZATION
Pacemaker Identification Algorithm

For more assistance check out this free application that uses AI to identify from
Pacemaker Identification ... Algorithm For ... Identification Algorithm ... CXR #ChestXRay #Pacemaker ... Identification #Algorithm
Pacemaker Operating Modes
1 - Chamber paced
     A (atrium), V (ventricle), D (dual/both)
2
Pacemaker Operating ... or paced atrial depolarization ... after ventricular depolarization ... to an intrinsic depolarization ... order to initiate depolarization
Temporary / External Pacing
 • Transvenous & epicardial pacing are temporary methods of supporting brady- &
permanent implanted pacemaker ... required to trigger depolarization ... to identify a depolarization ... MD @nickmmark #pacemaker
Action Potential: Depolarization and repolarization of a neuron

#ActionPotential #Depolarization #Repolarization #Neuron #Neurology #Pathophysiology
Action Potential: Depolarization ... and repolarization ... ActionPotential #Depolarization ... #Repolarization
Antiarrhythmics - Vaughan Williams Classification:
CLASS 1 - Sodium Channel Blockers:
 • MOA: Block fast Na+ channels
and magnitude of depolarization ... phase 4 to slow depolarization ... prolong AV node repolarization ... interval (delays time repolarization ... prolong AV node repolarization
Class I Antiarrhythmics and their Key Pharmacologic Properties

Class IA = Quinidine, Procainamide, Disopyramide ("Quarter PounDer")
Class IB
for the rapid depolarization ... • Slows depolarization ... involved in phase 3 repolarization ... • Prolongs repolarization