47 results
Antiarrhythmics Pharmacology Summary
Cardiac Conduction Phases:
Phase 0 - Ventricular Depolarization:
 • Na+ channels open leading to a
Phase I - Initial Repolarization ... Vaughan Williams Classification ... prolong AV node repolarization ... #Pharmacology #Classification ... #Classes #pathophysiology
Antiarrhythmics - Vaughan Williams Classification:
CLASS 1 - Sodium Channel Blockers:
 • MOA: Block fast Na+ channels
Vaughan Williams Classification ... interval (delays time repolarization ... prolong AV node repolarization ... #Pharmacology #Classification ... #Classes #pathophysiology
Hyperkalemia shortens repolarization; changes in the T wave provide the earliest clues to hyperpotassemia.
 - At
Hyperkalemia shortens repolarization ... ; changes in the ... 6.0 mEq/L, rapid repolarization ... sine wave (QRS-T fusion ... #Progression #Table
Causes of Chronic Dyspnea - Differential Diagnosis Algorithm
Pericardial
 • Effusion
 • Cardiac Tamponade*
 • Constriction
Myocardial
 •
Causes of Chronic ... Differential Diagnosis Algorithm ... Pericardial • Effusion ... Artery Disease • Stable ... Abnormalities • Pleural Effusions
Antiarrhythmics - Vaughan Williams Classification
Class I (Ia, Ib, Ic) - Na+ Channel Blockade
 • Slows depolarization
Vaughan Williams Classification ... Ib, Ic) - Na+ Channel ... Class III - K+ Channel ... VaughanWilliams #Classification ... #Classes #cardiology
Causes of Pleural Effusions
#Diagnosis #Pulmonary #PleuralEffusions #Differential #Table #Transudative #Exudative
Causes of Pleural ... Effusions #Diagnosis ... #Pulmonary #PleuralEffusions ... #Differential #Table
Causes of Hypoxemia- Differential Diagnosis Algorithm
Ventilation/perfusion Mismatch
 • Airway Disease (Asthma, COPD)
 • Vascular (PE*)
 •
Causes of Hypoxemia ... Differential Diagnosis Algorithm ... Ventilation/perfusion ... Differential #Diagnosis #Algorithm ... #Causes #Pulmonary
Chest Pain - Differential Diagnosis Algorithm
Cardiovascular Causes:
 - Outflow Obstruction
     • Aortic
Differential Diagnosis Algorithm ... Infarction • Stable ... • Myocarditis Pulmonary ... • Pleural Effusion ... Differential #Diagnosis #Algorithm
Causes of Pleural Effusion - Differential Diagnosis Algorithm
Exudative Effusion:
 - Pulmonary
     •
Causes of Pleural ... Diagnosis Algorithm ... : - Pulmonary ... Differential #Diagnosis #Algorithm ... #Causes #Pulmonary
Causes of Pleural Effusion - Differential Diagnosis Algorithm
Transudate - Hydrostatic
 • Congestive heart failure
 • Constrictive
Causes of Pleural ... Effusion - Differential ... Diagnosis Algorithm ... Malignancy • Pulmonary ... #causes