28 results
The JT Interval and Pro-Arrhythmic Risk
Measured from the J-point to the end of the T-wave, the
The JT Interval ... than prolonged QT ... #JTInterval #QTc ... pathophysiology #ekg ... #ecg #cardiology
Approach to ECGs - Syncope Syndromes
Electrolytes
 • ↑K - brady, peak T, wide QRS, no P,
Approach to ECGs ... - Syncope Syndromes ... Wong @mchlwng #Syncope ... #Syndromes #ECG ... #EKG #Checklist
Torsades de Pointes 
•Precipitated by drugs that prolong the QT interval 
•Class IA antidysrhythmics (procainamide, quinidine)
that prolong the QT ... interval •Class ... Diagnosis #Cardiology #ECG ... #EKG
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
WOBBLER  for ECG assessment in Syncope 
W - Wolff Parkinson White 
O - Obstructed AV
WOBBLER for ECG ... for a short PR interval ... found in long QT ... is also a short QT ... #EKG #ECG #Diagnosis
EKG Interpretation Cheat Sheet
1) Rate 
 - Regular - Count-Off 
 - Irregular - Count number
Flattened T waves QT ... • QT interval is ... formula: QTC = QT ... thumb: a normal QT ... Interpretation #ECG
Digoxin effect on Electrocardiogram (EKG)
Digoxin is a cardiac glycoside from the foxglove leaf
Mechanism
 - Inhibits Na-K
Electrocardiogram (EKG ... Digoxin effect on ECG ... waves - Short QT ... interval Dr. ... Cardiology #Digitalis #ECG
Electrocardiographic Features of Digoxin Toxicity
 • Virtually any arrhythmia is possible. None specific for digoxin toxicity
Shortening of QT ... interval • "Scooped ... Electrocardiogram #ekg ... #ecg #toxicology
Normal QT Interval Measurement
General rule: QT interval should be < 1/2 RR interval
   -
Normal QT Interval ... General rule: QT ... in seconds) #QT ... cardiology #diagnosis #ecg ... #ekg #electrocardiogram
Torsades de Pointes
• "Twisting of the pointes" 
• QRS axis swings from positive to negative direction
that prolong the QT ... interval ... Diagnosis #Cardiology #ECG ... #EKG