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cardiology diagnosis ekg ecg electrocardiogram pharmacology clinical differential qtc management interval pathophysiology prolongation table algorithm antiarrhythmics hypokalemia measurement mnemonic syncope
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]
Loperamide and QT Prolongation #Clinical #EM #Cardiology #EKG #QT #Prolongation #QTProlongation #Loperamide #ALiEM
Loperamide and QT ... Cardiology #EKG #QT
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
Want to remember what drugs prolong the QT interval? Remember COLLAPSE - Kitty Canavan @KathrynCanavan1 #Diagnosis #Peds
drugs prolong the QT
Causes of Sudden Cardiac Arrest Primary Myocardial Processes (> 90%): • Acquired structural heart disease: CAD, Most
Channelopathies: Long/short QT ... Acquired long QT
Common toxicities of antifungal agents. CNS = central nervous system; 5-FC = flucytosine; GI = gastrointestinal;
QTc = corrected QT
Hyperkalemia after Missed Hemodialysis - Initial electrocardiogram showed peaked T waves and a prolonged QT segment
and a prolonged QT
Normal QT Interval Measurement General rule: QT interval should be < 1/2 RR interval -
Normal QT Interval ... General rule: QT ... Formula: QTc = QT ... in seconds) #QT
Torsades de Pointes •Precipitated by drugs that prolong the QT interval •Class IA antidysrhythmics (procainamide, quinidine)
that prolong the QT
Short QT Syndrome Short QT syndrome (SQTS) is a very rare, recently described syndrome in which an
Short QT Syndrome ... Short QT syndrome ... unusually short QT ... associated with a short QT ... clear if the short QT
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