32 results
QT / QTc Interval Measurement in Irregular Rhythms
2 Approaches:
 • Measure and calculate the QTc for
QT / QTc Interval ... (using the RR interval ... interval), and ... #QTc #Interval ... Irregular #Rhythm #cardiology
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 ... you use the JT Interval ... than prolonged QT ... #ecg #cardiology
Torsades de Pointes 
•Precipitated by drugs that prolong the QT interval 
•Class IA antidysrhythmics (procainamide, quinidine)
that prolong the QT ... interval •Class ... TorsadesDePointes #Diagnosis #Cardiology ... #ECG #EKG
Atrioventricular (AV) Blocks

First Degree AV Block - "If your R is far from your P than
Atrioventricular ... with prolonged PR interval ... progressively prolonged PR intervals ... heart #heartblock #cardiology ... #ecg #ekg #diagnosis
Mobitz Type I (Wenckebach Phenomenon) 2nd Degree AV Block on EKG
 • P-R interval gradually increases
Phenomenon) 2nd Degree ... AV Block on EKG ... • P-R interval ... resets • P-P interval ... AVBlock #diagnosis #cardiology
Normal QT Interval Measurement
General rule: QT interval should be < 1/2 RR interval
   -
Normal QT Interval ... interval should ... be < 1/2 RR interval ... #QTc #Interval ... #ekg #electrocardiogram
Second Degree Heart Block, Mobitz Type I (Wenckebach)

P waves and QRS complexes are normal but... 
•
Second Degree Heart ... • PR interval ... HeartBlock #Diagnosis #Cardiology ... #EKG #ECG #Electrocardiogram
Second Degree AV Block Type I aka Mobitz I / Wenckebach 
 • Normal P waves.
Second Degree AV ... shortening of the RR interval ... • The RR interval ... the shortest RR interval ... Wenckebach #diagnosis #cardiology
Atrioventricular Blocks (AV blocks) - ECG Diagnosis Summary
First Degree AV Block
 • The P wave is
• PR interval ... • The RR interval ... the shortest RR interval ... • The PR interval ... #ekg #ecg #diagnosis
Second Degree Heart Block, Mobitz Type II

• p waves are normal 
• QRS complexes are usually
Second Degree Heart ... branch block • PR intervals ... HeartBlock #Diagnosis #Cardiology ... #EKG #ECG #Electrocardiogram