29 results
Normal QT Interval Measurement
General rule: QT interval should be < 1/2 RR interval
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Normal QT Interval ... General rule: QT ... = QT / Sqrt(RR) ... #Measurement #cardiology ... #ekg #electrocardiogram
Hypothermia on EKG
 • J (Osborn) waves
 • PR, QRS, and QT prolongation
 • Various bradyarrythmias
Hypothermia on EKG ... • PR, QRS, and QT ... bradyarrythmias (e.g ... #ECG #electrocardiogram ... #cardiology #diagnosis
Takotsubo Cardiomyopathy on POCUS

78 year old woman - Acute delirium but complaining of chest pain 
ECG:
Takotsubo Cardiomyopathy ... on POCUS 78 ... of chest pain ECG ... #Cardiomyopathy ... Echocardiogram #Cardiology
QT / QTc Interval Measurement in Wide QRS Complex
 - A wide QRS complex will lead
QT / QTc Interval ... increase in the QT ... Measurement #WideQRS #cardiology ... #diagnosis #ecg ... #ekg #electrocardiogram
The JT Interval and Pro-Arrhythmic Risk
Measured from the J-point to the end of the T-wave, the
than prolonged QT ... Interval #JTInterval #QTc ... #electrocardiogram ... pathophysiology #ekg ... #ecg #cardiology
Deep T Wave Inversions - Differential
Normal variants 
  A. Juvenile T wave pattern
ischemia/infarction Takotsubo ... (Yamaguchi syndrome ... wave inversion syndrome ... Diagnosis #Causes #Cardiology ... #ECG #EKG #Electrocardiogram
Causes of Sudden Cardiac Arrest
Primary Myocardial Processes (> 90%):
 • Acquired structural heart disease: CAD, Most
: Hypertrophic cardiomyopathy ... Familial dilated cardiomyopathy ... Channelopathies: Long/short QT ... Acquired long QT ... Cardiac #Arrest #cardiology
TCA Overdose on EKG
 • Sinus tachycardia
 • QRS prolongation
 • QT prolongation
 • Rightward deviation
TCA Overdose on EKG ... prolongation • QT ... antidepressants #EKG ... #ECG #electrocardiogram ... #cardiology #diagnosis
Approach to ECGs - Syncope Syndromes
Electrolytes
 • ↑K - brady, peak T, wide QRS, no P,
• ↑ Ca - short QT ... • ↓ Ca - long QT ... • ↓ Mg - long QT ... #diagnosis #cardiology ... #electrocardiogram
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 ... Irregular #Rhythm #cardiology ... #ekg #electrocardiogram