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diagnosis cardiology ekg ecg electrocardiogram clinical differential management pharmacology qtc algorithm interval neurology avblock pathophysiology syncope arrhythmia em hyperkalemia hypokalemia
QT/QTc- Interval • Start of Q-wave to end of the T-wave (time of ventricular depolarization + repolarization). • Life threatening
QT/QTc- Interval ... /QTc interval may ... interval is 8 x ... • QT interval ... HR) / 180 #QTInterval
The JT Interval and Pro-Arrhythmic Risk Measured from the J-point to the end of the T-wave, the
The JT Interval ... T-wave, the JT interval ... than prolonged QT ... interval in patients ... #JTInterval #QTc
Want to remember what drugs prolong the QT interval? Remember COLLAPSE - Kitty Canavan @KathrynCanavan1 #Diagnosis #Peds
drugs prolong the QT ... interval?
Common toxicities of antifungal agents. CNS = central nervous system; 5-FC = flucytosine; GI = gastrointestinal;
QTc = corrected QT ... interval.
Torsades de Pointes •Precipitated by drugs that prolong the QT interval •Class IA antidysrhythmics (procainamide, quinidine)
that prolong the QT ... interval •Class
EKG Interpretation Cheat Sheet 1) Rate - Regular - Count-Off - Irregular - Count number
• PR interval < ... Flattened T waves QT ... • QT interval is ... formula: QTC = QT ... thumb: a normal QT
Antiarrhythmics - Vaughan Williams Classification Class I (Ia, Ib, Ic) - Na+ Channel Blockade • Slows depolarization
and prolongs PR interval ... potential • Prolongs QT ... interval Class ... and prolongs PR interval
Arrhythmias - Differential Diagnosis Algorithm Bradyarrhythmia (<60 bpm) • Sinus Bradycardia • Sick Sinus Syndrome • SA
(constant R-R Interval ... (variable R-R interval ... (constant R-R Interval ... (variable R-R interval ... setting of long QT
REBEL Review 100: Canadian Syncope Risk Score Predisposition to Vasovagal Symptoms (-1) History of Heart Disease (1) Any
(1) Corrected QT ... Interval > 480
Electrocardiographic Features of Digoxin Toxicity • Virtually any arrhythmia is possible. None specific for digoxin toxicity
Shortening of QT ... interval • "Scooped
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