A client is admitted to the intensive care unit with diabetes insipidus due to a pituitary gland tumor.

Which potential complication should the nurse monitor closely?

Rationalizing the Priority
1. Airway/Breathing (D):
The "A" and "B" of the ABCs take precedence. In myxedema coma, hypoventilation is a primary concern. The client may experience respiratory muscle weakness or a decreased drive to breathe, leading to CO₂ retention and respiratory failure. Assessing the rate, depth, and effort of breathing is the absolute first step.

2. Circulation (B):
Once the airway is confirmed, you assess the "C" (Circulation). Myxedema coma causes severe bradycardia and decreased cardiac output, which leads to hypotension. Assessing blood pressure tells the nurse if the client is in cardiogenic shock.

3. Vital Signs/Metabolic State (C):
Hypothermia is a hallmark sign of myxedema coma (temperatures can often drop below 95°F or 35°C). While critical, it is addressed after ensuring the heart is pumping and the lungs are moving air. Monitoring temperature is vital because rapid rewarming can actually cause vasodilation and worsen shock.

4. Focused Physical Assessment (A):
Palpating for edema is an important part of a head-to-toe assessment for hypothyroidism (non-pitting mucinous edema is common), but it is not a life-saving intervention. It is a secondary assessment compared to the vital signs and respiratory status.

Choice A rationale:

Objective data. Rationale: Objective data are observable and measurable facts obtained through physical examination or diagnostic tests. The statement incorrectly labels the data as objective when it is, in fact, based on the client's feelings and perceptions, making it subjective.

Choice B rationale:

Subjective data. Rationale: Subjective data are information provided by the client, including their feelings, perceptions, and experiences. The statement correctly labels the data as subjective, as it reflects the client's report of thirst and hunger.

Choice C rationale:

Primary data. Rationale: Primary data are original data collected directly from the source, such as a client's medical history or interview. However, this classification does not address the nature of the data as being subjective or objective, so the statement does not provide a complete answer.

Choice D rationale:

Secondary data. Rationale: Secondary data are data obtained from sources other than the client, such as medical records or research studies. Similar to choice C, this classification does not address the nature of the data as being subjective or objective.