A nurse is reinforcing teaching with a parent of a 4-month-old infant during a home visit.

Which of the following statements by the parent indicates an understanding of the teaching?

1. . Answer and explanation.

The correct answer is choice C, first-degree atrioventricular block.

This is because the PR interval is longer than normal, which indicates a delay in the conduction of electrical impulses from the atria to the ventricles through the AV node. A normal PR interval is 0.12 to 0.2 seconds, or 3 to 5 small squares on the EKG strip.

In this case, the PR interval is 0.35 seconds, which is more than 5 small squares.

Choice A is wrong because atrial fibrillation is a type of arrhythmia where the atria beat irregularly and rapidly, producing chaotic and variable P waves and an irregular ventricular response.

There is no constant PR interval in atrial fibrillation.

Choice B is wrong because complete heart block is a type of arrhythmia where there is no conduction of electrical impulses from the atria to the ventricles, resulting in independent and dissociated atrial and ventricular rhythms.

There are no consistent P waves or PR intervals in complete heart block.

Choice D is wrong because premature atrial complexes are extra beats that originate from the atria and interrupt the normal sinus rhythm.

They produce abnormal P waves that are different from the sinus P waves, and may have a shorter or longer PR interval depending on the timing of the impulse.

However, they do not cause a constant prolongation of the PR interval.

The correct answer is choice B. The nurse should sit in a chair next to the bed to place the client at ease. This position allows the nurse to maintain eye contact, show interest, and respect the client’s personal space. Sitting on the bed next to the client (choice A) is wrong because it invades the client’s privacy and comfort zone. Standing at the side of the bed (choice C) or at the foot of the bed (choice D) is wrong because it creates a power imbalance and may intimidate the client.

The nurse should also consider the client’s condition and preferences when choosing a position for the interview. For example, a client who is on bedrest may have difficulty hearing or seeing the nurse if they are too far away or at an awkward angle.

Therefore, the nurse should adjust their position accordingly and ask the client if they are comfortable with it.