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ekg differential electrocardiogram antiarrhythmics classification clinical torsadesdepointes agents antidepressants avr causes changes class1 classi complexes ddi depointes digitalis digoxin drugdrug
TCA Overdose on EKG • Sinus tachycardia • QRS prolongation • QT prolongation • Rightward deviation
TCA Overdose on EKG ... prolongation • QT ... #ECG #electrocardiogram ... #cardiology #diagnosis ... #clinical #criteria
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
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
Torsades de Pointes (TdP): Pathogenesis and Clinical Findings Polymorphic ventricular tachycardia initiated by PVC in the setting
the setting of QT ... dePointes #TdP #Diagnosis ... #pathophysiology ... #cardiology #causes
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
Class I Antiarrhythmics and their Key Pharmacologic Properties Class IA = Quinidine, Procainamide, Disopyramide ("Quarter PounDer") Class IB
and their Key Pharmacologic ... in wide QRS on EKG ... results in prolonged QT ... #Pharmacology # ... Agents #Cardiology
Lead AVR on ECG 1. Acute myocardial infarction: ST elevation > 1.5 mm in aVR, indicative of
: Differential diagnosis ... wave in aVR • Classic ... widened QRS and QTc ... • Vereckei criteria ... #cardiology
Antiarrhythmics - Vaughan Williams Classification: CLASS 1 - Sodium Channel Blockers: • MOA: Block fast Na+ channels
Duration) - ↑ QT ... inotropy) ACCP Cardiology ... Vaughan #Williams #Pharmacology ... #pathophysiology ... #cardiology
Antiarrhythmics Pharmacology Summary Cardiac Conduction Phases: Phase 0 - Ventricular Depolarization: • Na+ channels open leading to a
Antiarrhythmics Pharmacology ... Duration) - ↑ QT ... inotropy) ACCP Cardiology ... #pathophysiology ... #phases #cardiology
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