A nurse is caring for a client who is postoperative and has an NG tube that has drained 2,500 ml. In the past 6 hr. The nurse should monitor the client for which of the following electrolyte Imbalances?

A. Perform leg exercises every 2 hr:
After surgery, especially abdominal surgery, patients are at risk of developing deep vein thrombosis (DVT) due to decreased mobility. Performing leg exercises every 2 hours helps in improving blood circulation and preventing blood clots in the legs.

B. Irrigate the nasogastric tube every 4 to 8 hr:
Irrigating the nasogastric tube (inserting fluid into the tube) at regular intervals is not a standard practice. Nasogastric tubes are primarily used for decompression (removing stomach contents) or drainage, not for irrigation. Inserting fluids without a specific medical reason can disrupt the balance in the gastrointestinal tract and lead to complications.

C. Maintain bed rest for 48 hr following surgery:
Encouraging early mobility is a standard practice after surgery. Prolonged bed rest increases the risk of complications such as pneumonia, blood clots, and muscle weakness. Patients are typically encouraged to start moving and walking around as soon as it's safe to do so, usually within a few hours to a day after surgery, depending on the type of surgery and the patient's overall condition.

D. Encourage hourly use of an incentive spirometer while awake:
An incentive spirometer is a medical device used to help patients improve the functioning of their lungs. It encourages patients to take slow, deep breaths, which helps in expanding the lungs and preventing atelectasis (partial lung collapse) that can occur after surgery when patients may not be taking deep breaths as usual.

E. Document the color, consistency, and amount of nasogastric drainage:
Monitoring and documenting the characteristics of nasogastric drainage is essential for assessing the patient's condition. Changes in the color, consistency, or amount of drainage can indicate various issues, including bleeding, infection, or bowel perforation. This documentation helps the healthcare team make informed decisions about the patient's care.

A. Blood glucose 150 mg/dL:
This blood glucose level is slightly elevated but not significantly concerning on its own. It may be related to stress or other factors. In the context of acute gastroenteritis, it might be secondary to dehydration, but it is not an immediate priority unless the client is diabetic.

B. Potassium 2.5 mEq/L:
This is the correct answer. Low potassium levels (hypokalemia) are a severe concern, especially in the context of acute gastroenteritis where there can be significant losses through vomiting and diarrhea. Hypokalemia can lead to cardiac arrhythmias and needs urgent correction.

C. Weight loss of 3% of total body weight:
While weight loss is an important parameter, a 3% weight loss is usually not an immediate concern. In cases of acute gastroenteritis, rapid weight loss might indicate severe dehydration, but this choice is not as urgent as addressing a severe electrolyte imbalance like hypokalemia.

D. Urine specific gravity 1.035:
This specific gravity indicates concentrated urine, which could be due to dehydration. While this finding is important and indicates the need for rehydration, it is not as urgent as correcting a critically low potassium level.