CCT Certification Exam Study Guide
Study online at https://quizlet.com/_cavzi5
1. Lead I records the electri- right arm (-) to left arm (+)
cal activity between the
2. Lead II records the electri- right arm to left leg
cal activity between the
3. Lead III records the electri- left arm to left leg
cal activity between the
4. aVF records the electrical center of the heart to the left leg
activity from the
5. aVL records the electrical center of the heart to the left arm
activity from the
6. aVR records the electrical the center of the heart to the right arm
activity from
(usually negative deflection)
7. 3 major functions of EKG 1. Input: signals coming from electrode into EKG machine
machine
2. Signal processing: amplifies electrical impulse inside the ma-
chine
3. Output: displayed on screen/printed report
8. Gain Control (controls 10 mm/mV
height of waveform) nor-
mal setting
9. Artifact Filter normal set- between 40-150 Hz
ting
10. 3 leads
, CCT Certification Exam Study Guide
Study online at https://quizlet.com/_cavzi5
Continuous EKG monitor- Lead II is most important
ing leads
RA: white
LA: black
LL: red
11. Modification for pediatric V3 may require placement on the right side (V3R) to avoid crowding
EKG of electrodes on the left side
12. Modification for pregnant -place lower limb leads on thighs instead of abdomen
patients
-document that patient is pregnant and how many months along
13. Modification for patient -reverse leads from normal placement
with Dextrocardia -indicate "right side" on chart
(aVR tracing will produce a positive deflection)
14. Normal range of PR inter- 0.12 to 0.20 second
val
15. Normal range of QRS com- 0.06 to 0.10 second
plex
16. Normal length of Q wave less than 0.04 second
17. Causes of ischemia (lack of -clot
blood supply to an area) -plaque (cholesterol)
-vascular spasm
-emboli
18. Right coronary artery -Posterior Descending Artery
branches -Marginal Artery
19.
, CCT Certification Exam Study Guide
Study online at https://quizlet.com/_cavzi5
Left coronary artery -Circumflex Artery
branches -Left Anterior Descending Artery
20. Posterior descending supplies blood to posterior wall of the heart
artery
21. Marginal artery supplies blood to walls of right atrium and right ventricle
22. Circumflex artery supplies blood to lateral wall of left ventricles
23. Left anterior descending supplies blood to anterior wall of left ventricle
artery
24. Arteries carry blood with arteries carry blood with high pressure
____ pressure, while veins
carry blood with ____ pres- veins carry blood with low pressure
sure
25. Angina chest pain caused by lack of oxygen to the heart muscle
(pain may radiate to other locations)
26. Hypertrophy abnormal thickening of the cardiac chamber
due to abnormal pressure overload
can lead to suboptimal pumping capability, resulting in:
-shortness of breath
-chest pain
-arrhythmia
27. ECG criteria for Right Ven- right-side axis deviation of at least 110 degrees
tricular Hypertrophy
R-wave dominance over the S wave in V1-V2
Study online at https://quizlet.com/_cavzi5
1. Lead I records the electri- right arm (-) to left arm (+)
cal activity between the
2. Lead II records the electri- right arm to left leg
cal activity between the
3. Lead III records the electri- left arm to left leg
cal activity between the
4. aVF records the electrical center of the heart to the left leg
activity from the
5. aVL records the electrical center of the heart to the left arm
activity from the
6. aVR records the electrical the center of the heart to the right arm
activity from
(usually negative deflection)
7. 3 major functions of EKG 1. Input: signals coming from electrode into EKG machine
machine
2. Signal processing: amplifies electrical impulse inside the ma-
chine
3. Output: displayed on screen/printed report
8. Gain Control (controls 10 mm/mV
height of waveform) nor-
mal setting
9. Artifact Filter normal set- between 40-150 Hz
ting
10. 3 leads
, CCT Certification Exam Study Guide
Study online at https://quizlet.com/_cavzi5
Continuous EKG monitor- Lead II is most important
ing leads
RA: white
LA: black
LL: red
11. Modification for pediatric V3 may require placement on the right side (V3R) to avoid crowding
EKG of electrodes on the left side
12. Modification for pregnant -place lower limb leads on thighs instead of abdomen
patients
-document that patient is pregnant and how many months along
13. Modification for patient -reverse leads from normal placement
with Dextrocardia -indicate "right side" on chart
(aVR tracing will produce a positive deflection)
14. Normal range of PR inter- 0.12 to 0.20 second
val
15. Normal range of QRS com- 0.06 to 0.10 second
plex
16. Normal length of Q wave less than 0.04 second
17. Causes of ischemia (lack of -clot
blood supply to an area) -plaque (cholesterol)
-vascular spasm
-emboli
18. Right coronary artery -Posterior Descending Artery
branches -Marginal Artery
19.
, CCT Certification Exam Study Guide
Study online at https://quizlet.com/_cavzi5
Left coronary artery -Circumflex Artery
branches -Left Anterior Descending Artery
20. Posterior descending supplies blood to posterior wall of the heart
artery
21. Marginal artery supplies blood to walls of right atrium and right ventricle
22. Circumflex artery supplies blood to lateral wall of left ventricles
23. Left anterior descending supplies blood to anterior wall of left ventricle
artery
24. Arteries carry blood with arteries carry blood with high pressure
____ pressure, while veins
carry blood with ____ pres- veins carry blood with low pressure
sure
25. Angina chest pain caused by lack of oxygen to the heart muscle
(pain may radiate to other locations)
26. Hypertrophy abnormal thickening of the cardiac chamber
due to abnormal pressure overload
can lead to suboptimal pumping capability, resulting in:
-shortness of breath
-chest pain
-arrhythmia
27. ECG criteria for Right Ven- right-side axis deviation of at least 110 degrees
tricular Hypertrophy
R-wave dominance over the S wave in V1-V2
