60 results
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 ... #JTInterval #QTc ... #ecg #cardiology
Quinidine produces the following ECG changes:
1. Prolongation of Q-T interval:
2. Prolongation of QRS complex:
3. Prominent V
the following ECG ... Prolongation of Q-T interval ... prolongation of P-R interval ... Diagnosis #Cardiology #ECG ... #EKG #Quinidine
Mobitz Type I (Wenckebach Phenomenon) 2nd Degree AV Block on EKG
 • P-R interval gradually increases
Degree AV Block on EKG ... • P-R interval ... resets • P-P interval ... to 6:5 in this ECG ... #ECG #Electrocardiogram
Torsades de Pointes 
•Precipitated by drugs that prolong the QT interval 
•Class IA antidysrhythmics (procainamide, quinidine)
prolong the QT interval ... Diagnosis #Cardiology #ECG ... #EKG
Wolff-Parkinson-White Syndrome

WPW is a congenital abnormality characterized by an abnormal accessory conduction pathway between the atria
and widened QRS interval ... on EKG. ... ) 3 Short PR interval ... WPW #Cardiology #ECG ... #EKG #Electrocardiogram
Second Degree AV Block Type I aka Mobitz I / Wenckebach 
 • Normal P waves.
shortening of the RR interval ... • The RR interval ... the shortest RR interval ... group-beating" on the ECG ... diagnosis #cardiology #ecg
The 4 Variants of Sinus Arrhythmia
Phasic Sinus Arrhythmia:
 • The rate increases with respiration and decreases
P wave and PR interval ... normal • The PP intervals ... • The P to P interval ... cardiology #diagnosis #ekg ... #ecg #electrocardiogram
Second Degree Heart Block, Mobitz Type I (Wenckebach)

P waves and QRS complexes are normal but... 
•
• PR interval ... Diagnosis #Cardiology #EKG ... #ECG #Electrocardiogram
WPW EKG after cardioversion of SVT

Here is the post-conversion ECG

The patient is now in Sinus Rhythm,
WPW EKG after cardioversion ... post-conversion ECG ... The PR interval ... EM_RESUS #WPW #EKG ... #ECG #Electrocardiogram
Torsades de Pointes
• "Twisting of the pointes" 
• QRS axis swings from positive to negative direction
Originates from single focus ... prolong the QT interval ... Diagnosis #Cardiology #ECG ... #EKG