A nurse is caring for a client who is 12 hr postoperative and has a chest tube to a disposable water-seal drainage system with suction. The nurse should intervene for which of the following observations?

A. Hyperaldosteronism causes sodium retention and potassium excretion, leading to elevated serum sodium levels and low potassium levels. A serum potassium level of 2.5 mmol/L is indicative of hypokalemia, which is a classic finding in hyperaldosteronism.
B. This serum electrolyte pattern (normal sodium and potassium) is not suggestive of hyperaldosteronism.
C. In hyperaldosteronism, the serum sodium is typically elevated, but the potassium level is very low, not elevated as seen in this option.
D. While low potassium is indicative of hyperaldosteronism, the sodium level is abnormally low in this case, which is not typical for this condition. Hyperaldosteronism typically presents with elevated sodium.

A. Monitor for postural hypotension: This is unlikely in Cushing’s syndrome, where hypertension (not hypotension) is more common due to excess cortisol and fluid retention.
B. Assess blood glucose level: Hyperglycemia is common in Cushing’s syndrome due to the effects of cortisol on glucose metabolism, so monitoring blood glucose levels is essential.
C. Monitor for an irregular heart rate: While Cushing's syndrome can lead to electrolyte imbalances that may affect heart rhythm, this is not a primary intervention in Cushing's syndrome. Monitoring for hypertension and fluid retention is more critical.
D. Assess for neck vein distention: Elevated cortisol levels can lead to fluid retention and hypertension, contributing to neck vein distention, so this is an important observation.
E. Weigh the client daily: Fluid retention and weight gain are key features of Cushing's syndrome, so daily weight monitoring helps assess fluid status and detect rapid weight gain indicative of worsening symptoms.