222 results
Antiarrhythmics Pharmacology Summary
Cardiac Conduction Phases:
Phase 0 - Ventricular Depolarization:
 • Na+ channels open leading to a
- Ventricular Depolarization ... • Atrial depolarization ... and magnitude of depolarization ... inotropy) ACCP Cardiology ... pathophysiology #phases #cardiology
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 ... inotropy) ACCP Cardiology ... pathophysiology #cardiology
Pacemaker Operating Modes
1 - Chamber paced
     A (atrium), V (ventricle), D (dual/both)
2
or paced atrial depolarization ... after ventricular depolarization ... to an intrinsic depolarization ... order to initiate depolarization ... Pacing #settings #cardiology
Major electrocardiogram findings induced by left ventricular hypertrophy (LVH)
An increase in left ventricular mass augments the
alteration in repolarization ... in left atrial depolarization ... EKG #Diagnosis #Cardiology
Pacemaker Identification Algorithm

For more assistance check out this free application that uses AI to identify from
Identification Algorithm ... Identification Algorithm ... #Diagnosis #Cardiology ... #Radiology #CXR ... ChestXRay #Pacemaker #PPM
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 ... Pharmacology #Agents #Cardiology
Differentiating Pacemaker vs ICD on Chest XRay
 - Single Chamber PPM
 - Single Chamber ICD
 -
Single Chamber PPM ... ChestXRay #CXR #Radiology ... comparison #clinical #cardiology
Temporary / External Pacing
 • Transvenous & epicardial pacing are temporary methods of supporting brady- &
required to trigger depolarization ... to identify a depolarization ... nickmmark #pacemaker #PPM ... External #Pacing #cardiology
Pacemaker Evaluation Algorithm by Lorne Costello

#Diagnosis #ECG #EKG #Pacemaker #Evaluation #Algorithm #PPM
Pacemaker Evaluation Algorithm ... Pacemaker #Evaluation #Algorithm ... #PPM
Distinguishing Between Benign Early repolarization vs STEMI on EKG
#Diagnosis #Cardiology #ECG #EKG #Repolarization #STEMI #Comparison #Table
Between Benign Early repolarization ... EKG #Diagnosis #Cardiology ... #ECG #EKG #Repolarization