30 results
Torsades de Pointes 
•Precipitated by drugs that prolong the QT interval 
•Class IA antidysrhythmics (procainamide, quinidine)
QT interval •Class ... quinidine) •Class ... IC antidysrhythmics ... TorsadesDePointes #Diagnosis #Cardiology
Class I Antiarrhythmics and their Key Pharmacologic Properties

Class IA = Quinidine, Procainamide, Disopyramide ("Quarter PounDer")
Class IB
Class I Antiarrhythmics ... IC = Flecainide ... channel blockade: IC ... the ERP: IA > IC ... Pharmacology #Agents #Cardiology
Antiarrhythmics - Sodium Channel Blockers
Subclasses, Mechanisms, Indications, Side Effects
la - Quinidine, Procainamide
lb - Lidocaine, Mexiletine
Ic -
Lidocaine, Mexiletine Ic ... Channel #Blockers #ClassI ... #Na #cardiology
Antiarrhythmics - Vaughan Williams Classification
Class I (Ia, Ib, Ic) - Na+ Channel Blockade
 • Slows depolarization
Classification Class ... I (Ia, Ib, Ic) ... Widens QRS complex Class ... prolongs PR interval Class ... #cardiology #pharmacology
Torsades de Pointes
• "Twisting of the pointes" 
• QRS axis swings from positive to negative direction
interval Class ... quridine) Class ... IC antidysrhythmics ... TorsadesDePointes #Diagnosis #Cardiology
Sinus Tachycardia Differential Algorithm

- Dr. Tom Fadial https://twitter.com/thame

#Sinus #Tachycardia #Differential #Algorithm #Diagnosis #Cardiology #Causes
Tachycardia Differential Algorithm ... #Differential #Algorithm ... #Diagnosis #Cardiology ... #Causes
Causes of Diastolic Murmurs - Differential Diagnosis Algorithm
Early Diastolic:
 • Aortic Regurgitation
 • Pulmonary Regurgitation (Graham-Steell
Causes of Diastolic ... Differential Diagnosis Algorithm ... Diastolic #Murmurs #Cardiology ... Differential #Diagnosis #Algorithm ... #causes
Causes of Dilated Cardiomyopathy DCMP - Differential Diagnosis Algorithm
Idiopathic DCMP: Viral, Inflammatory cardiomyopathy, Genetic causes, Unknown
Causes of Dilated ... Differential Diagnosis Algorithm ... , Unknown causes ... Differential #Diagnosis #Algorithm ... #Causes #cardiology
Algorithm and Causes of an Elevated Hemidiaphragm #Diagnosis #Radiology #EM #IM #PCC #Elevated #Hemidiaphragm #ElevatedHemidiaphragm #Diaphragm
Algorithm and Causes ... Hemidiaphragm #Diagnosis #Radiology ... #Differential #Algorithm
Arrhythmias - Differential Diagnosis Algorithm
May present as: palpitations, dizziness, syncope, chest discomfort
Cardiac Causes:
 - Structural
Differential Diagnosis Algorithm ... ) Non-Cardiac Causes ... #Arrhythmias #Cardiology ... Differential #Diagnosis #Algorithm ... #causes