An 84-year-old patient has just returned from the post-anesthetic care unit after undergoing hip arthroplasty. The patient is only oriented to their name.
The patient’s family is distressed because the patient had no cognitive deficits before surgery.The patient is later diagnosed with postoperative delirium. What should the nurse communicate to the patient’s family?

This type of delirium is treatable and the patient’s cognition will return to its previous levels.

This issue can be resolved by administering antidotes to the anesthetic used in surgery.

Delirium involves a progressive decline in memory loss and overall cognitive function.

This problem is self-limiting and there is nothing to worry about.

Answer and Explanation

The Correct Answer is A

Choice A rationale
Postoperative delirium is a common condition that can occur in older patients after surgery, especially major procedures like hip arthroplasty. It is characterized by a sudden onset of confusion and altered consciousness. This type of delirium is indeed treatable and most patients’ cognition will return to its previous levels. The treatment often involves addressing the underlying causes, such as pain, medication effects, or metabolic imbalances, and providing supportive care. It’s important for the family to understand that this is a temporary condition and does not indicate a permanent change in their loved one’s mental status.
Choice B rationale
While anesthetics can contribute to postoperative delirium, the condition is usually multifactorial and not solely due to the anesthetic used in surgery. Therefore, administering antidotes to the anesthetic is not typically how postoperative delirium is managed. Instead, the focus is on treating the underlying causes and providing supportive care.
Choice C rationale

Delirium does involve a disturbance in cognition, including memory impairment, but it does not involve a progressive decline in memory loss and overall cognitive function. That description is more characteristic of dementia, a different condition. Delirium is typically a temporary condition that improves once the underlying cause is addressed.
Choice D rationale
While postoperative delirium is often self-limiting, meaning it resolves on its own over time, it is not accurate to say there is nothing to worry about. Postoperative delirium can be distressing for the patient and their family, and in some cases, it can be associated with longer hospital stays and increased morbidity. Therefore, it is a condition that should be taken seriously and managed appropriately.

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Correct Answer is D

Explanation

Choice A rationale:
Respiratory acidosis is characterized by a low pH (less than 7.35), a high PaCO2 (greater than 45 mm Hg), and a normal or high HCO3 (22-26 mEq/L). It occurs when there is a buildup of carbon dioxide in the blood due to impaired ventilation.
The patient's ABGs do not align with respiratory acidosis because the pH is elevated (7.6), and the PaCO2 is within the normal range (40 mm Hg).
Choice B rationale:
Respiratory alkalosis is characterized by a high pH (greater than 7.45), a low PaCO2 (less than 35 mm Hg), and a normal or low HCO3 (22-26 mEq/L). It occurs when there is excessive loss of carbon dioxide through hyperventilation.
The patient's ABGs do not align with respiratory alkalosis because the HCO3 is elevated (32 mEq/L), which is not typical for this condition.
Choice C rationale:
Metabolic acidosis is characterized by a low pH (less than 7.35), a normal or low PaCO2 (less than 40 mm Hg), and a low HCO3 (less than 22 mEq/L). It occurs when there is an excess of acid in the body or a loss of bicarbonate.
The patient's ABGs do not align with metabolic acidosis because the pH is elevated (7.6), and the HCO3 is elevated (32 mEq/L).
Choice D rationale:

Metabolic alkalosis is characterized by a high pH (greater than 7.45), a normal or high PaCO2 (40-45 mm Hg), and an elevated HCO3 (greater than 26 mEq/L). It occurs when there is an excess of bicarbonate in the body or a loss of acid.
The patient's ABGs align with metabolic alkalosis because of the high pH (7.6), normal PaCO2 (40 mm Hg), and elevated HCO3 (32 mEq/L).

A. The patient has sensorineural hearing loss B. The patient is at risk for tinnitus C. The patient’s hearing is likely normal D. The patient likely has otosclerosis

Correct Answer is C

Explanation

Choice A rationale
Sensorineural hearing loss is a type of hearing loss in which the root cause lies in the inner ear or sensory organ (cochlea and associated structures) or the vestibulocochlear nerve (cranial nerve VIII). Sensorineural hearing loss can be mild, moderate, severe, or profound, and it affects the ability to hear faint sounds or understand speech. However, in the Rinne test, if the air-conducted sound is louder than the bone-conducted sound, it indicates that the patient’s hearing is likely normal.
Choice B rationale
Tinnitus is the perception of noise or ringing in the ears. It is a common problem that affects about 15 to 20 percent of people and is especially common in older adults. However, the Rinne test is not used to diagnose tinnitus. It is used to compare air and bone conduction of sound.
Choice C rationale
In a normal Rinne test, air conduction (AC) is better than bone conduction (BC). This is referred to as a positive Rinne test. If a patient reports that air-conducted sound is louder than bone-conducted sound, it suggests that the patient’s hearing is likely normal.
Choice D rationale
Otosclerosis is a condition that affects the bones in the middle ear, causing hearing loss. It is a common cause of conductive hearing loss, particularly in young adults. However, in otosclerosis, bone conduction (BC) is better than air conduction (AC), which is referred to as a negative Rinne test.

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Naxlex Comprehensive Predictor Exams

A nurse is analyzing the arterial blood gas (ABG) results of a patient. The patient’s ABGs are: pH:7.6, PaCO2:40 mm Hg, HCO3:32 mEq/L. Which of the following acid-base conditions should the nurse identify the patient is experiencing?

Correct Answer is D

Explanation

An advanced practice nurse has performed a Rinne test on a new patient. During the test, the patient reports that air-conducted sound is louder than bone-conducted sound. How should the nurse interpret this assessment finding?

Correct Answer is C

Explanation

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