21 results
QT / QTc Interval Measurement in Irregular Rhythms
2 Approaches:
 • Measure and calculate the QTc for
QT / QTc Interval ... interval), and ... #QTc #Interval ... Rhythm #cardiology #diagnosis ... #ecg #ekg #electrocardiogram
Second degree AV Block type II (aka Mobitz II)
 • There is constant PR interval (normal
is constant PR interval ... #Type2 #diagnosis ... #cardiology #ecg ... #ekg #electrocardiogram ... #Mobitz2
Second Degree Heart Block, Mobitz Type I (Wenckebach)

P waves and QRS complexes are normal but... 
•
Degree Heart Block, Mobitz ... • PR interval ... the AV node #Mobitz ... SecondDegree #HeartBlock #Diagnosis ... #ECG #Electrocardiogram
Mobitz Type I (Wenckebach Phenomenon) 2nd Degree AV Block on EKG
 • P-R interval gradually increases
Mobitz Type I (Wenckebach ... • P-R interval ... resets • P-P interval ... Block #AVBlock #diagnosis ... #ECG #Electrocardiogram
ECG Cheat Sheet

ECG rapid view: It is organized roughly how one would typically read an ECG.
ECG Cheat Sheet ... atrial, ventricle), Intervals ... (PR, QRS, QT), ... #Cribsheet #Electrocardiogram ... #Diagnosis #Reference
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 ... Type1 #Wenckebach #diagnosis ... #ekg #electrocardiogram
Second Degree Heart Block, Mobitz Type II

• p waves are normal 
• QRS complexes are usually
Degree Heart Block, Mobitz ... branch block • PR intervals ... His-Purkinje system #Mobitz ... SecondDegree #HeartBlock #Diagnosis ... #ECG #Electrocardiogram
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 ... #ecg #ekg #electrocardiogram
Electrocardiographic Features of Digoxin Toxicity
 • Virtually any arrhythmia is possible. None specific for digoxin toxicity
Shortening of QT ... interval • "Scooped ... digitalis #Toxicity #Electrocardiogram ... #ekg #ecg #toxicology ... #cardiology #diagnosis
Approach to ECGs - Tachy/Bradyarrhythmias
Tachyarrhythmias - HR > 100
Wide
  (1) VT - DANGER
  (2)
Approach to ECGs ... 1º - long PR intervals ... successively longer PR intervals ... #EKG #diagnosis ... #electrocardiogram