Cardiology 101(Complete solutions)

Cardiology 101(Complete solutions)
Dubin's Method for For Reading EKG's. correct answers1. Rate
2. Rhythm
3. Axis
4. Hypertrophy
5. Infarction

Rate correct answers300, 150, 100... 75, 60, 50

But for brady= cycles/6 sec strip X 10

Rhythm correct answersIdentify the basic rhythm, then scan tracing for prematurity, pauses,
irregularity, and abnormal waves.
- Check for: P before each QRS
QRS after each P.
-Check: PR intervals (for AV Blocks).
QRS interval (for BBB).
-If access deviation, rule out Hemiblock.

Axis correct answers- QRS above or below the baseline for Axis Quadrant (for Normal vs. R or
L Axis Deviation).
For Axis in degrees, find isoelectric QRS in a limb lead of Axis Quadrant using the "Axis in
Degrees" chart.
-Axis rotation in the horizontal plane: (chest leads) find "transitional" (isoelectric) QRS.

Hypertrophy correct answersCHECK V1.
P wave for atrial hypertrophy.
R wave for right ventricular hypertrophy.
S wave depth in V1....
+ R wave height in V5 for Left Ventricular Hypertrophy

Infarction correct answersScan all leads for:
- Q waves
- Inverted T waves
- ST segment elevation or depression

Find the location of the pathology (in the Left ventricle), and then identify the occluded coronary
artery.

1mm (small square) correct answers= 0.04 sec

5mm (big square) correct answers=0.2 sec

QRS Morphology, narrow complex correct answerssinus, atrial, or junctional origin