The nurse is caring for a client who is on cardiac telemetry monitoring and notes that the PR interval is 0.16 seconds. Which interpretation is correct for the nurse to make?

It indicates a normal depolarization of the atria.

It provides information about atrial repolarization.

It shows an early indication of first degree heart block.

It reflects a delayed conduction through the atria.

Answer and Explanation

The Correct Answer is A

A. It indicates a normal depolarization of the atria: A PR interval of 0.12–0.20 seconds is within the normal range, representing normal conduction through the atria and AV node.

B. It provides information about atrial repolarization: Atrial repolarization is obscured by the QRS complex and not reflected in the PR interval.

C. It shows an early indication of first-degree heart block: First-degree heart block is indicated by a PR interval longer than 0.20 seconds.

D. It reflects a delayed conduction through the atria: A delay in conduction would result in a prolonged PR interval.

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Correct Answer is D

Explanation

A. “There is some swelling in your right leg that is making you feel this way.” Swelling would typically cause discomfort or pressure, but it would not be responsible for the sensation of pain in the amputated limb.

B. "Your brain is responding to being inactive from the surgery." This answer does not address the real cause of the pain, which is related to the brain's continued perception of the missing limb.

C. "Don't worry about your right foot. The pain will go away within a few days." Phantom limb pain is a common phenomenon after amputation and may persist long-term. Dismissing it is not appropriate.

D. "Your brain is still receiving impulses about your right foot." This is an accurate explanation for phantom limb pain. After amputation, the brain may still interpret sensations from the absent limb, causing pain or discomfort in the "missing" foot.

A. Pharmacological toxins B. Pleural infusion C. Autoimmune disorders D. Viral infections E. Peripheral vascular disease

Correct Answer is ["A","C","D"]

Explanation

A. Pharmacological toxins can contribute to myocarditis, as certain drugs may induce inflammatory responses in the myocardium.

B. Pleural infusion is incorrect. Pleural infusion, or pleural effusion, is not directly associated with myocarditis.

C. Autoimmune disorders such as lupus and rheumatoid arthritis can predispose individuals to myocarditis due to immune system dysregulation.

D. Viral infections are a major cause of myocarditis, particularly infections like coxsackievirus, parvovirus B19, and HIV.

E. Peripheral vascular disease is incorrect. While peripheral vascular disease is related to poor circulation, it does not directly contribute to the development of myocarditis.

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The nurse is caring for a client who is on cardiac telemetry monitoring and notes that the PR interval is 0.16 seconds. Which interpretation is correct for the nurse to make?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

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