45 results
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 ... /QTc interval may ... • QT interval ... = QT / √RR
The JT Interval and Pro-Arrhythmic Risk
Measured from the J-point to the end of the T-wave, the
JTc=QTc-QRS When ... you use the JT Interval ... than prolonged QT ... interval in patients ... #JTInterval #QTc
QT / QTc Interval Measurement in Irregular Rhythms
2 Approaches:
 • Measure and calculate the QTc for
QT / QTc Interval ... the associated QT ... for the QT intervals ... EricsMedicalLectures/ #QT ... #QTc #Interval
Want to remember what drugs prolong the QT interval? Remember COLLAPSE - Kitty Canavan @KathrynCanavan1
#Diagnosis #Peds
drugs prolong the QT ... interval? ... COLLAPSE #Mnemonic #QTc
Common toxicities of antifungal agents. 
CNS = central nervous system; 5-FC = flucytosine; GI = gastrointestinal;
= intravenous; QTc ... = corrected QT ... interval.
QT / QTc Interval Measurement in Wide QRS Complex
 - A wide QRS complex will lead
QT / QTc Interval ... increase in the QT ... prolongation of the QTC ... EricsMedicalLectures/ #QT ... #QTc #Interval
REBEL Review 100: Canadian Syncope Risk Score 

Predisposition to Vasovagal Symptoms (-1)
History of Heart Disease (1)
Any
100: Canadian Syncope ... (1) Corrected QT ... Interval > 480 ... (2) Vasovagal Syncope ... (-2) Cardiac Syncope
Normal QT Interval Measurement
General rule: QT interval should be < 1/2 RR interval
   -
Normal QT Interval ... General rule: QT ... = QT / Sqrt(RR) ... in seconds) #QT ... #QTc #Interval
EKG Interpretation Cheat Sheet
1) Rate 
 - Regular - Count-Off 
 - Irregular - Count number
Flattened T waves QT ... /QTC Interval: ... • QT interval is ... = QT / √ RR - ... thumb: a normal QT
Congenital Long QT Syndrome: Illness Script

Who?
 - Kids or young adults, usually < 30
 - high
Congenital Long QT ... Symptoms: - Syncope ... baseline EKG in new syncope ... - QT prolonging ... abnormalities - Avoid QTc