CCT Exam Practice - Performing
Resting ECG UPDATE VERIFIED
QUESTIONS & DETAILED
EXPLANATIONS GRADED A+
Professional Academic Assistance Services
proper skin preparation for ECG - Answer: - clip excess hair from
application sites to ensure proper skin contact with the
electrode (as needed)
- cleanse site with mild soap and water (avoid using alcohol)
- if the patient is wearing lotion, it should be washed off prior to
the placement of electrodes
- dry skin completely before applying electrodes
- light exfoliation of the skin site
the quality of the signal received from the electrodes is a direct
result of skin preparation and lead placement.
approach the patient from the __________ when performing an
ECG - Answer: left side
calibration of ECG machine - Answer: 10 mm height and
recorded at 25 mm/sec
, limb leads - Answer: RA, LA, RL, LL
bipolar leads are - Answer: three leads with negative and
positive poles
lead I, lead II, lead III
lead I - Answer: right arm (-) to left arm (+)
lead II - Answer: right arm (-) to left leg (+)
lead III - Answer: left arm (-) to left leg (+)
Einthoven's triangle - Answer: the triangle around the heart
formed by the bipolar limb leads
Einthoven's law - Answer: lead I + lead III = lead II; lead II should
have the tallest QRS of the bipolar leads
augmented leads - Answer: unipolar limb leads identified as
aVR, aVL, and aVF
all positive
Resting ECG UPDATE VERIFIED
QUESTIONS & DETAILED
EXPLANATIONS GRADED A+
Professional Academic Assistance Services
proper skin preparation for ECG - Answer: - clip excess hair from
application sites to ensure proper skin contact with the
electrode (as needed)
- cleanse site with mild soap and water (avoid using alcohol)
- if the patient is wearing lotion, it should be washed off prior to
the placement of electrodes
- dry skin completely before applying electrodes
- light exfoliation of the skin site
the quality of the signal received from the electrodes is a direct
result of skin preparation and lead placement.
approach the patient from the __________ when performing an
ECG - Answer: left side
calibration of ECG machine - Answer: 10 mm height and
recorded at 25 mm/sec
, limb leads - Answer: RA, LA, RL, LL
bipolar leads are - Answer: three leads with negative and
positive poles
lead I, lead II, lead III
lead I - Answer: right arm (-) to left arm (+)
lead II - Answer: right arm (-) to left leg (+)
lead III - Answer: left arm (-) to left leg (+)
Einthoven's triangle - Answer: the triangle around the heart
formed by the bipolar limb leads
Einthoven's law - Answer: lead I + lead III = lead II; lead II should
have the tallest QRS of the bipolar leads
augmented leads - Answer: unipolar limb leads identified as
aVR, aVL, and aVF
all positive
