ECG questions

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

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

On patients ECG, you recognize the P waves are unidentifiable or perhaps hidden in a previous T wave. What is likely the cause?

Atrial tachycardia

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

Capture true cardiac activity.

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

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

Which of the following actions should the MA take to eliminate the artifact shown on the strip?

Check the bed plug in at the wall socket or unplug the bed.

While performing an ECG on a patient, electrodes keep falling off. Which of the following should the MA do? (Select all that apply)

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

TO prevent the likehood of somatic tremor artifact, the MA should?

Make the patient calm and comfortable to minimize movement.

Which of the following actions should the MA take ensure proper monitoring of a patient during a stress test? (Select all that apply)

Observe facial expression, skin color, and perspiration. Instruct patient to report any symptoms. Measure blood pressure and heart rate frequently.

Atrial depolarization is represented by the ?

P wave

Which of the following actions should the MA take to eliminate the artifact shown in the strip?

Remind the patient to remain as still as possible.

Where should the V1 electrode be placed for a normal 12-lead ECG?

The fourth intercostal space to the right of the sternum.

In an ECG, what does the PR interval represent?

The times it takes for the electrical impulse to travel from the SA node to the AV node.

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

V4 is placed left midclavicular line 5th intercostal space.