Cardiology

3. What is the approximate amount of time for the QRS complex to record on an ECG?

0.06-0.10 seconds

32. A series of small uniform spikes on the ECG paper most likely represents:

AC Interference

36. A patient with the left arm amputated comes in for an ECG. Which of the following is the proper placement for the left arm lead on this patient?

As close to the site as possible but higher on the limb and in a similar position

21. A female patient has come in for an ECG following a mastectomy. ECG electrodes should be placed

As close to the surgery site as possible without touching the site.

10. The P wave of an ECG indicates

Atrial contraction.

19. Which of the following rhythms is shown in the strip above?

Atrial flutter

29. Which of the following occurs when a singular irritable impulse fires so rapidly it bombards the AV node, causing V shaped or upside down V shaped waves?

Atrial flutter

34. During an ECG, the right leg provides grounding for which leads?

Augmented

4. Which of the following are appropriate actions for the ECG technician to take when placing electrodes on a patient's skin for a 24-hour Holter monitor? (Select the three (3) correct answers.)

Avoid scars and incisions. Tape the lead wires to the patient's skin. Abrade the skin with an alcohol pad or dry 4x4.

26. The importance of accurate anatomic positioning of leads on a patient when performing an ECG is to

Capture true cardiac activity.

20. The medical assistant is performing a 12-lead ECG on a patient and notices that lead III does not appear on the tracing. Which of the following actions should the medical assistant take?

Check for a loose wire, reconnect, and repeat the tracing.

17. Which of the following is the best way to correct AC interference on an ECG?

Check that the patient does not have a cell phone close by.

15. Which of the following actions should the medical assistant take to eliminate the artifact shown in the strip shown above?

Check the bed plugin at the wall socket or unplug the bed.

31. To prevent wandering baseline artifact, the medical assistant should ensure the patient is

Cleansed with alcohol prep pads.

6. What is the abbreviation for electroencephalogram?

EEG

7. Which of the following diagnostic procedures uses ultrasound to display an image of the structure of the heart?

Echocardiogram

2. The ECG technician is performing an ECG on a patient who is obese, and wandering baseline is present. Which of the actions should the technician take? (Select the two (2) correct answers.)

Ensure that new electrodes and clean clips are used. Ensure good skin preparation.

40. The patient is performing a cardiac stress test. Which of the following is the proper placement for lead V2?

Fourth intercostal area to the left of the sternum

1. A patient with Parkinson's comes in for an ECG with noticeably severe tremors. Which of the following should the medical assistant do to ensure a proper reading.

Have the patient slide their hands under their buttocks.

8. After validating an ECG order, collecting all supplies, and ensuring the machine is in proper working order, the technician's next action should be to?

Identify the patient.

25. The use of smaller electrodes while running an ECG on a four year old pediatric patient will require which of the following modifications?

Increase the paper speed.

9. Which of the following actions by the ECG technician are likely to be performed prior to exercise stress testing? (Select the four (4) correct answers.)

Inform the patient of expectations during the testing. Explain the symptoms to report if experienced during testing. Obtain the patient's medical history and current medications. Have a crash cart with defibrillator close at hand.

18. Which of the following ECG leads records the electrical activity of the inferior surface of the left ventricle and is closest to the heart?

Lead II

5. Where should the V4 electrode be placed on the body?

Left midclavicular line, 5th intercostal space

37. A patient's wife calls the office and states that her husband is experiencing left arm pain and chest pressure. Which of the following could the patient be suffering from?

MI

27. To prevent the likelihood of somatic tremor artifact, the medical assistant should

Make the patient calm and comfortable to minimize movement.

11. After notifying the physician, which of the following should be the medical assistant's next action after recording this ECG rhythm on a patient?

Monitor the patient for deterioration of symptoms.

14. Which of the following rhythms is shown in the strip?

Normal sinus rhythm

13. Which of the following indicates a normal sinus rhythm?

PR interval of 0.14 second, QRS complex of 0.10 second, QT interval of 0.40 second and HR of 78

35. ECG machines with LCD displays allow which of the following information to be added before the test? (Select the two (2) correct answers).

Patient name, blood pressure

39. While performing an ECG on a patient, electrodes keep falling off. Which of the following should the medical assistant do? (Select the two (2) correct answers).

Place tape over the wires of the electrodes., Clean the skin with 70% isopropyl alcohol.

30. While performing an ECG on a patient, electrodes keep falling off. Which of the following should the medical assistant do? (Select the two (2) correct answers).

Place tape over the wires of the electrodes., Clean the skin with 70% isopropyl.

23. The pictured rhythm is an example of which of the following?

Premature ventricular contraction

24. Placement of the ground lead on an ECG is on the

RL on the soft tissue of the leg.

28. After performing an ECG, the medical assistant notices wandering baselines in the precordial leads. Which of the following is the most appropriate next step?

Re-evaluate chest leads.

22. A medical assistant obtains the tracing shown above on a patient. Which of the following actions should the medical assistant take?

Remind the patient to remain as still as possible.

33. To correct a wandering baseline, the medical assistant should

Replace loose electrodes.

38. To correct a wandering baseline, the medical assistant should

Replace loose electrodes.

16. When performing a 12-lead ECG, which of the following positions demonstrates correct lead placement?

V4 is placed left midclavicular 5th intercostal space

12. Which of the following rhythms identified on an ECG prompts the medical assistant to notify the provider immediately?

Ventricular fibrillation