A nurse is educating the parent of a school-age child about the importance of maintaining water intake to prevent dehydration. Which of the following food choices should the nurse recommend as containing the greatest percentage of water?

Choice A reason: Hypernatremia is not a sign of water intoxication, but rather the opposite condition. Hypernatremia means high sodium levels in the blood, which can occur when the body loses more water than sodium, such as in dehydration, diabetes insipidus, or excessive salt intake. Water intoxication causes hyponatremia, which means low sodium levels in the blood, due to excessive water intake or retention.

Choice B reason: Weak pulses are not a specific sign of water intoxication, but rather a general sign of poor perfusion or circulation. Weak pulses can have many causes, such as hypotension, shock, heart failure, or peripheral vascular disease. Water intoxication can cause hypotension, but it can also cause hypertension, depending on the volume status of the client.

Choice C reason: Muscle weakness is a sign of water intoxication, as it reflects the effect of low sodium levels on the neuromuscular system. Sodium is essential for nerve and muscle function, as it helps generate electrical impulses and contractions. When sodium levels drop too low, the nerves and muscles become less responsive and weaker. Other signs of water intoxication affecting the nervous system include confusion, headache, seizures, and coma.

Choice D reason: Exaggerated reflexes are not a sign of water intoxication, but rather a sign of hyperreflexia, which is a condition of overactive reflexes. Hyperreflexia can have many causes, such as spinal cord injury, stroke, multiple sclerosis, or electrolyte imbalance. Water intoxication can cause electrolyte imbalance, but it usually leads to hyporeflexia, which is a condition of reduced or absent reflexes.

Choice A reason: Confusion and weakness are signs of dehydration and electrolyte imbalance, which can result from vomiting and diarrhea. These are serious complications that can affect the client's mental status, blood pressure, heart rate, and kidney function. The nurse should report these findings to the provider and monitor the client's vital signs and fluid status.

Choice B reason: Dry oral mucosa and furrowed tongue are also signs of dehydration, but they are less severe than confusion and weakness. The nurse should report these findings to the provider as well, but they are not the most urgent ones.

Choice C reason: A temperature of 37.4° C (99.3° F) is slightly elevated, but not indicative of a fever or infection. The nurse should document this finding, but it does not require immediate follow-up.

Choice D reason: A blood pressure of 90/58 mm Hg is low, but not hypotensive. The nurse should document this finding, but it does not require immediate follow-up.