Public Safety Training Facility

Monroe Community College
Rochester, New York

Select one correct answer for each question. Only your first choice will be tabulated even if you click another button.

1. Which electrode is the positive electrode in aVR?

Right Arm
Left Arm
Right Leg
Left Leg

2. Which lead is often referred to as the inverted stepchild of lead II?


3. Which of the following would make you suspect lateral wall ischemia on the 12 lead ekg?

Diffuse ST depression
Flipped t waves in II, III and aVF
T wave inversions in I, aVL, V5 and V6
ST segment elevations in V5 and V6

4. Which of the following does not directly cause ST segment elevation?

Prinzmetal's angina
Ventricular aneurysm
Early repolarization
Aortic aneurysm

5. Which of the following leads are referred to as Einthovan's triangle?

V1,V2 and V3
aVR, aVL, aVF
I, aVF and aVR

6. When considering lead placement, where is the V3 electrode placed?

Left 3rd ICS AAL
4th ICS L Sternal Border
5th ICS L Sternal Border
Equidistant between V2 and V4

7. WPW would be expected to give a tell tale finding on the ekg. What would you look for?

slurred upstroke of the R wave
slurred S wave into the T
Notched QRS waves
Notched P waves

8. What percent of 12 lead EKGs appear normal during the onset of an AMI with symptoms?:


9. S1Q3T3 patterns are suggestive of?

Angina Pectoris
Pulmonary Pathology
Dig Toxicity

10. A QRS axis of 0 degrees would make:

The QRS in lead I inverted.
The P wave in aVF very tall.
The QRS in aVF very small or equiphasic.
Would make the QRS in aVR mostly positive.

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URL: /depts/pstc/prcard2.htm

Updated: Oct. 30, 2000