12 results
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 ... results in prolonged QT ... Agents #Cardiology
Torsades de Pointes 
•Precipitated by drugs that prolong the QT interval 
•Class IA antidysrhythmics (procainamide, quinidine)
that prolong the QT ... interval •Class ... quinidine) •Class ... TorsadesDePointes #Diagnosis ... #Cardiology #ECG
Antiarrhythmics - Vaughan Williams Classification
Class I (Ia, Ib, Ic) - Na+ Channel Blockade
 • Slows depolarization
Classification Class ... Widens QRS complex Class ... potential • Prolongs QT ... interval Class ... #cardiology #pharmacology
Torsades de Pointes
• "Twisting of the pointes" 
• QRS axis swings from positive to negative direction
that prolong the QT ... interval Class ... quridine) Class ... TorsadesDePointes #Diagnosis ... #Cardiology #ECG
Electrocardiographic Features of Digoxin Toxicity
 • Virtually any arrhythmia is possible. None specific for digoxin toxicity
digoxin toxicity • Classic ... Shortening of QT ... Electrocardiogram #ekg ... #ecg #toxicology ... #cardiology #diagnosis
Common sodium channel blockers which cause QRS widening.

Anticonvulsants: 
 - Carbamazepine 
Antidysrhythmics:  
 - Group
- Group IA and IC ... #EKG #Pharmacology ... Medications #Toxicology #Diagnosis ... #Differential # ... Drugs #Classes
Lead AVR on ECG
1. Acute myocardial infarction: ST elevation > 1.5 mm in aVR, indicative of
Lead AVR on ECG ... wave in aVR • Classic ... widened QRS and QTc ... #ekg #differential ... #cardiology
Hyperkalemia shortens repolarization; changes in the T wave provide the earliest clues to hyperpotassemia.
 - At
prolonged PR and QT ... wave to produce classic ... #Diagnosis #Hyperkalemia ... #EKG #ECG #Changes ... #Progression #Table
Causes of ST Segment Elevation - Differential Diagnosis Framework

STEMI:
 • Upsloping convex STE: "Pardee's sign" +
Diagnosis Framework ... and a prolonged QT ... waves - Short QT ... waves • Short QT ... #diagnosis #cardiology
Clinically Significant Cardiovascular Drug-Drug Interactions With OTC Supplements and Herbal Products
Angiotensin-Converting Enzyme Inhibitors (ACEIs)
 • Night-blooming
wort - Increases QT ... potential arrhythmias Class ... wort - Increases QT ... supplementals #herbal #pharmacology ... #DDI #table #cardiology