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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. How much time is represented by one large box on EKG graph paper?

0.04 seconds
4.0 seconds
0.4 seconds
0.2 seconds


2. Which of the following leads normally has a large R wave?

MCL1
V1
aVR
V5


3. In a normal adult EKG, T Waves should be upright in which lead?

V1
V4
aVR
V2


4. What is the inherent rate of the ventricles?

100-160
60-100
40-60
20-40


5. Which of the following leads belongs to the frontal plane?

V1
MCL1
aVR
V6


6. When considering lead placement, where is the positive electrode in lead aVF?

RA
LA
RL
LL


7. Which of the following makes diagnosing AMI more difficult?

flipped T waves
electrolyte imbalance
left bundle branch block
first degree AV heart block


8. A gain of one means:

1 mV = 1 cm
1 Volt = 1 mm
1 mA = 10 cm
1 mV = 1 mm


9. Which of the following leads is best suited to determine which bundle branch is blocked?

Lead I
Lead II
MCL1
aVL


10. The ground lead of the twelve lead:

protects the patient from electrocution
helps to remove electrical interference
helps to keep the patient from moving
is attached to the left leg




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Updated: November 8, 1999
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