EKG CET Exam – Study Guide and Practice Questions for Certified
Electrocardiographic Technician Certification
1 small box = __ seconds - correct answer ✔✔.04 sec
1 small box is - correct answer ✔✔1 mm x 1 mm
y-axis of ekg - correct answer ✔✔voltage
x-axis of ekg - correct answer ✔✔time
1 small box equals - correct answer ✔✔1 mm
1 big box is on the EKG is - correct answer ✔✔0.5mV/0.2sec
Paper speed of EKG - correct answer ✔✔25 mm/sec
Standard amplitude (gain) - correct answer ✔✔10 mm (tall) x 5 mm (wide)
Augmented leads and precordial leads are - correct answer ✔✔unipolar
Bipolar leads are - correct answer ✔✔I, II, and III (einthoven's triangle)
What are calibration boxes? - correct answer ✔✔Small rectangles that appear at the beginning
of each lead
, Lead I - correct answer ✔✔Left arm is positive and right arm is negative
Charge of left arm - correct answer ✔✔positive (lead 1) and negative (lead 3)
Charge of left foot - correct answer ✔✔positive
Charge of right arm - correct answer ✔✔negative
Lead II - correct answer ✔✔Right arm is positive and left leg is negative
Lead III - correct answer ✔✔Left arm is negative and left leg is positive
avR - correct answer ✔✔left arm + left leg = right arm tracing
aVL - correct answer ✔✔left leg + right arm = left arm tracing
aVF - correct answer ✔✔right arm + left arm = left leg tracing
Where is the angle of Louis located? - correct answer ✔✔Second intercostal space
V1 - correct answer ✔✔4th intercostal space to the right of the sternum
V2 - correct answer ✔✔4th intercostal space to the left of the sternum
V3 - correct answer ✔✔Midway between V2 and V4
Electrocardiographic Technician Certification
1 small box = __ seconds - correct answer ✔✔.04 sec
1 small box is - correct answer ✔✔1 mm x 1 mm
y-axis of ekg - correct answer ✔✔voltage
x-axis of ekg - correct answer ✔✔time
1 small box equals - correct answer ✔✔1 mm
1 big box is on the EKG is - correct answer ✔✔0.5mV/0.2sec
Paper speed of EKG - correct answer ✔✔25 mm/sec
Standard amplitude (gain) - correct answer ✔✔10 mm (tall) x 5 mm (wide)
Augmented leads and precordial leads are - correct answer ✔✔unipolar
Bipolar leads are - correct answer ✔✔I, II, and III (einthoven's triangle)
What are calibration boxes? - correct answer ✔✔Small rectangles that appear at the beginning
of each lead
, Lead I - correct answer ✔✔Left arm is positive and right arm is negative
Charge of left arm - correct answer ✔✔positive (lead 1) and negative (lead 3)
Charge of left foot - correct answer ✔✔positive
Charge of right arm - correct answer ✔✔negative
Lead II - correct answer ✔✔Right arm is positive and left leg is negative
Lead III - correct answer ✔✔Left arm is negative and left leg is positive
avR - correct answer ✔✔left arm + left leg = right arm tracing
aVL - correct answer ✔✔left leg + right arm = left arm tracing
aVF - correct answer ✔✔right arm + left arm = left leg tracing
Where is the angle of Louis located? - correct answer ✔✔Second intercostal space
V1 - correct answer ✔✔4th intercostal space to the right of the sternum
V2 - correct answer ✔✔4th intercostal space to the left of the sternum
V3 - correct answer ✔✔Midway between V2 and V4
