MA 400 exam 2 Questions with Detailed Verified Answers

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MA 400 exam 2 Questions with Detailed
Verified Answers

Question: An electrocardiogram is a recording of the:

Ans✅ ✅: electrical activity of the heart

Question: Electrocardiography is used to

Ans✅ ✅: detect the presence of cardiac ischemia

determine the presence of hypertrophy of the heart

evaluate chest pain or shortness of breath

Question: What. is a cardiac cycle

Ans✅ ✅: One complete heart beat

Question: What is thr name given to the portion of the ECG between
two waves

Ans✅ ✅: Segment

Question: Which of the following conditions can cause the ECG tracing
to exhibit a larger than normal Q wave and an elevated S-T segment?

Ans✅ ✅: Myocardial infarction

(Another term for heart attack)

Question: How high is the standardization mark when the
electrocardiograph is properly

Ans✅ ✅: 10mm

Question: how many leads are there on a standard electrocardiogram?

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Ans✅ ✅: 12

Question: A device placed on the skin that picks up electrical impulses
released by the heart is known as

Ans✅ ✅: An electrode

Question: Electrical voltage received by the electrocardiograph is
changed to mechanical motion in the

Ans✅ ✅: galvanometer

Question: Which electrode is used as a ground reference

Ans✅ ✅: right leg

Question: An electrolyte must be used when running an ECG to

Ans✅ ✅: Facilitate the transmission of the electrical impulses of the heart

Question: A disposable electrode is held in place by

Ans✅ ✅: An adhesive backing on the electrode

Question: All of the following are guidelines for the electrodes except

Ans✅ ✅: store electrodes in a refrigerator

Question: Leads 1,2, and 3 are the

Ans✅ ✅: Bipolar leads

Question: The aVR, aVL, and aVF are known as the

Ans✅ ✅: augmented leads

Question: Chest lead V2 is located at the

Ans✅ ✅: fourth intercostal space at left margin of sternum

Question: Where is chest lead V5 located?