- Diagnostic Criterias on ECG (Goldberger) Flashcards
Sinus Rhythm
(+) P in II
(-) P in aVR
*Plus P waves will also be similar and in appropriate rate for the clincal context.
AV Junctional Rhythm
(-) P in II
(+) P in aVR
- The opposite of what we find in Sinus Rhythm.
- It’s the same as in Ectopic Atrial Rhythm at lower atrial area.
Ectopic Atrial Rhythm at lower atrial area.
(-) P in II
(+) P in aVR
- The opposite of what we find in Sinus Rhythm.
- It’s the same as in AV Junctional Rhythm.
Right Atrial Enlargement (RAE)
Sobrecarga Atrial Direita) (SAD
P-Pulmonale - Tall P wave (>2.5mm) in Lead II
More proeminent positive component of the biphasic P wave in V1.
Left Atrial Enlargement (LAE)
Sobrecarga Atrial Esquerda) (SAE
P-mitrale - broad, notched P wave in lad II
Proeminent negative component of the biphaisc P wave in V1
Wolff-Parkinson-White
Delta Waves
Short PR Interval (<3 small squares)
Wide QRS (>3 small squares)
1rst Degree AV Block
Prolonged PR only (>5 small squares (>0.2 sec))
2nd Degree AV Block - Mobitz I (Wenckebach)
Prolonged PR that becomes progressively longer
till a Drop of QRS.
2nd Degree AV Block - Mobitz II
A random drop of QRS (without the progressive prolongation of PR)
2nd Degree AV Block - 2:1 Block
Regular one drop of QRS for every 2 P waves.
*We can’t call it Mobitz I or Mobitz II because we can’t say if there’s or theresn’t prolongation of the PR interval, since the QRS alwas drops at the second P wave.
2nd Degree AV Block - High Grade
Multiple consecutive drops of QRS (e.g.: 3:1)
3rd Degree AV Block
AV Dissociation with P waves coming “on time” and atrial rate much quicker than ventricular rate.
Left Axis Deviation
Mean QRS Axis ≤ -30º
*Can be quickly identified by QRS positive in Lead I, but negative in Lead II.
Right Axis Deviation
Mean QRS Axis ≥ +100º
*Can be quickly identified by QRS negative in Lead I, but positive in Lead II.
Isorhythmic AV Dissociation
AV dissociation with a atrial rate almost equal to the ventricular rate.
