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: Acute stress causes an increase in metabolism, as the body activates the sympathetic nervous system and releases hormones such as adrenaline and cortisol. These hormones increase the heart rate, blood pressure, and oxygen consumption, and mobilize glucose and fatty acids for energy. The nurse should explain to the clients that acute stress can have beneficial effects, such as enhancing alertness, memory, and performance, but it can also have harmful effects, such as impairing digestion, immunity, and growth.

Choice B reason: Stress causes a negative nitrogen balance in the body, not a positive one. Nitrogen balance is the difference between the amount of nitrogen ingested and the amount of nitrogen excreted. A positive nitrogen balance means that the body is retaining more nitrogen than it is losing, which indicates growth, healing, or pregnancy. A negative nitrogen balance means that the body is losing more nitrogen than it is retaining, which indicates malnutrition, illness, or injury. The nurse should inform the clients that stress can cause a negative nitrogen balance, as the body breaks down protein for energy and loses nitrogen through urine, sweat, and wounds.

Choice C reason: Protein requirements increase in times of stress, not decrease. Protein is essential for tissue repair, immune function, and hormone synthesis. The nurse should advise the clients that stress can increase the protein needs of the body, as the body loses protein through catabolism, inflammation, and infection. The nurse should recommend the clients to consume adequate amounts of high-quality protein, such as eggs, milk, cheese, meat, fish, poultry, soy, and nuts.

Choice D reason: Glucose is broken down more quickly during times of stress, not more slowly. Glucose is the main source of energy for the brain and the muscles. The nurse should educate the clients that stress can increase the glucose levels in the blood, as the body releases glucose from the liver and muscles to provide fuel for the stress response. The nurse should also warn the clients that chronic stress can lead to insulin resistance, diabetes, and cardiovascular disease.