A nurse is positioning a client for a cesarean birth.

To prevent a compromise in placental blood flow during the intraoperative period, which of the following actions should the nurse take?

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 C. Perform a sterile dressing change for a client who has an abdominal wound. This is because a licensed practical nurse (LPN) can perform tasks that require technical skills and have predictable outcomes, such as dressing changes. A sterile dressing change is also within the scope of practice of an LPN.

Choice A is wrong because complete discharge teaching for a client who has a new diagnosis of diabetes mellitus requires assessment, evaluation and critical thinking, which are beyond the scope of practice of an LPN. Discharge teaching is the responsibility of a registered nurse (RN) who can provide education and counseling to clients and families.

Choice B is wrong because completing the Glasgow Coma Scale for a client who has an evolving stroke requires assessment and interpretation of neurological status, which are complex and unpredictable tasks that only an RN can perform. The Glasgow Coma Scale is a tool that measures the level of consciousness of a client based on eye opening, verbal response and motor response. A client who has an evolving stroke may have changes in their neurological status that require frequent monitoring and intervention by an RN.

Choice D is wrong because performing an admission assessment for a client who is scheduled for surgery requires comprehensive data collection, analysis and synthesis, which are advanced skills that only an RN can perform. An admission assessment involves obtaining a complete health history, performing a physical examination, identifying client needs and problems, and developing a plan of care.

A client who is scheduled for surgery may have complex and unpredictable needs that require specialized knowledge and judgment by an RN.