A medical assistant should take which of the following actions when placing electrodes on a patient for an EKG?

Place the arm electrodes facing downward.

Place the electrodes over bony prominences when possible.

Place the leg electrodes downward.

Place the chest electrodes in a straight line just below the nipple.

Answer and Explanation

The Correct Answer is A

A. Place the arm electrodes facing downward. The arm electrodes should be placed with the tabs facing downward to reduce the risk of artifacts on the EKG tracing caused by movement or improper lead contact.
B. Place the electrodes over bony prominences when possible. Electrodes should not be placed over bony prominences, as this can interfere with the accuracy of the EKG reading. Instead, they should be placed on soft tissue.
C. Place the leg electrodes downward. Leg electrodes should also be placed with the tabs facing downward to prevent artifacts, similar to the arm electrodes.
D. Place the chest electrodes in a straight line just below the nipple. Chest electrodes should be placed according to specific anatomical landmarks, not in a straight line, to ensure accurate heart rhythm tracing.

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Correct Answer is B

Explanation

A. Obtaining a tympanic reading: This procedure does not typically require gloves as it is non-invasive and does not involve contact with bodily fluids.
B. Administering a nebulizer treatment: Gloves should be worn during this procedure to maintain hygiene and prevent exposure to respiratory secretions.
C. Performing a visual acuity test: This test is non-invasive and does not require gloves.
D. Removing a cyst: This procedure typically requires more than gloves; it involves aseptic technique and potentially sterile equipment. Gloves are part of the preparation but are not sufficient on their own.

A. Left bundle branch B. Purkinje fibers C. Right bundle branch D. Atrioventricular node

Correct Answer is D

Explanation

A. Left bundle branch: The left bundle branch is stimulated after the atrioventricular node and bundle of His, not immediately after the sinoatrial node.
B. Purkinje fibers: The Purkinje fibers are stimulated later in the conduction pathway, after the bundle branches.
C. Right bundle branch: The right bundle branch is also stimulated after the atrioventricular node and bundle of His.
D. Atrioventricular node: After the sinoatrial node initiates the heartbeat, the electrical impulse travels to the atrioventricular node, which then passes the signal to the bundle of His and down to the bundle branches.

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A medical assistant should take which of the following actions when placing electrodes on a patient for an EKG?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

A medical assistant should identify that which of the following tasks requires the use of gloves?

Correct Answer is B

Explanation

In the conduction system of the heart, which of the following components is stimulated after the sinoatrial node?

Correct Answer is D

Explanation

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