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diagnosis differential ecg causes electrocardiogram antiarrhythmics pharmacology torsadesdepointes evaluation management pathophysiology summary acs anemia angina arrhythmias atrioventricular avblock avr blocks
Torsades de Pointes •Precipitated by drugs that prolong the QT interval •Class IA antidysrhythmics (procainamide, quinidine)
prolong the QT interval ... •Class IA antidysrhythmics ... quinidine) •Class ... TorsadesDePointes #Diagnosis #Cardiology ... #ECG #EKG
Antiarrhythmics - Vaughan Williams Classification Class I (Ia, Ib, Ic) - Na+ Channel Blockade • Slows depolarization
Vaughan Williams Classification ... and prolongs PR interval ... • Prolongs QT interval ... VaughanWilliams #Classification ... #Classes #cardiology
Torsades de Pointes • "Twisting of the pointes" • QRS axis swings from positive to negative direction
prolong the QT interval ... Class IA ... quridine) Class ... TorsadesDePointes #Diagnosis #Cardiology ... #ECG #EKG
Electrocardiographic Features of Digoxin Toxicity • Virtually any arrhythmia is possible. None specific for digoxin toxicity
digoxin toxicity • Classic ... Shortening of QT interval ... Electrocardiogram #ekg ... #ecg #toxicology ... #cardiology #diagnosis
Antiarrhythmics - Vaughan Williams Classification: CLASS 1 - Sodium Channel Blockers: • MOA: Block fast Na+ channels
Vaughan Williams Classification ... Duration) - ↑ QT interval ... inotropy) ACCP Cardiology ... #Pharmacology #Classification ... #cardiology
Hypokalemia Differential Diagnosis Algorithm Low intake • poor oral intake Renal loss • Medication • Hypomagnesemia •
Differential Diagnosis Algorithm ... Frameworks for Internal ... Differential #Diagnosis #Algorithm ... #Causes #Classification
Chest Pain / ACS Evaluation Algorithm Algorithm that attempts to the use history taking (guided by LRs),
ACS Evaluation Algorithm ... Algorithm that ... Diamond-Forrester classification ... - History - EKG ... #cardiology #Angina
Antiarrhythmics Pharmacology Summary Cardiac Conduction Phases: Phase 0 - Ventricular Depolarization: • Na+ channels open leading to a
Vaughan Williams Classification ... Duration) - ↑ QT interval ... inotropy) ACCP Cardiology ... #Pharmacology #Classification ... #phases #cardiology
Arrhythmias - Differential Diagnosis Algorithm Bradyarrhythmia (<60 bpm) • Sinus Bradycardia • Sick Sinus Syndrome • SA
Differential Diagnosis Algorithm ... (constant R-R Interval ... tachyarrhythmias #Cardiology ... Differential #Diagnosis #Algorithm ... #causes
Summary of Heart Blocks 1st Degree Heart Block: • Prolonged PR >200ms (5 small squares). • Narrow
• PR intervals ... HeartBlocks #Types #Classification ... summary #Diagnosis #EKG ... electrocardiogram #ecg ... #cardiology
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