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Torsades de Pointes (TdP): Pathogenesis and Clinical Findings Polymorphic ventricular tachycardia initiated by PVC in the setting
the setting of QT ... TdP #Diagnosis #pathophysiology
QTc Prolongation - Medications and Conditions that Prolong QT: From "A to N" A - Anti-A-rrhythmics B -
Conditions that Prolong QT ... Geriatrics H - Heart pathophysiology ... diagnosis #table #QT
The JT Interval and Pro-Arrhythmic Risk Measured from the J-point to the end of the T-wave, the
than prolonged QT ... electrocardiogram #pathophysiology
Antiarrhythmics - Vaughan Williams Classification: CLASS 1 - Sodium Channel Blockers: • MOA: Block fast Na+ channels
Duration) - ↑ QT ... Classification #Classes #pathophysiology
Antiarrhythmics Pharmacology Summary Cardiac Conduction Phases: Phase 0 - Ventricular Depolarization: • Na+ channels open leading to a
Duration) - ↑ QT ... Classification #Classes #pathophysiology
QT/QTc- Interval • Start of Q-wave to end of the T-wave (time of ventricular depolarization + repolarization). • Life threatening
QT/QTc- Interval ... ) • Prolonged QT ... • Shortened QT ... • QT interval ... [QT nomogram]
Approach to ECGs - Syncope Syndromes Electrolytes • ↑K - brady, peak T, wide QRS, no P,
• ↑ Ca - short QT ... • ↓ Ca - long QT ... • ↓ Mg - long QT ... heart block Long QT ... -500ms) Short QT
Causes of Sudden Cardiac Arrest Primary Myocardial Processes (> 90%): • Acquired structural heart disease: CAD, Most
Channelopathies: Long/short QT ... Acquired long QT
Want to remember what drugs prolong the QT interval? Remember COLLAPSE - Kitty Canavan @KathrynCanavan1 #Diagnosis #Peds
drugs prolong the QT
Common toxicities of antifungal agents. CNS = central nervous system; 5-FC = flucytosine; GI = gastrointestinal;
QTc = corrected QT
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