A nurse is caring for a client who has a major burn injury and is receiving total parenteral nutrition. Which of the following laboratory tests is the priority for the nurse to use to confirm the client is receiving adequate nutrition?

Choice A reason: Diabetes mellitus is not a likely complication of malnutrition, as it is caused by insufficient insulin production or action, not by inadequate food intake. Malnutrition may worsen the outcomes of diabetes, but it does not cause it.

Choice B reason: Pressure injury is a common complication of malnutrition, as it is caused by impaired tissue perfusion and oxygenation due to poor nutrition. Malnutrition can lead to loss of muscle mass, subcutaneous fat, and skin integrity, which increase the risk of developing pressure ulcers.

Choice C reason: Heat intolerance is not a direct complication of malnutrition, as it is caused by impaired thermoregulation due to hormonal or neurological disorders, not by insufficient food intake. Malnutrition may affect the body's ability to cope with heat stress, but it does not cause it.

Choice D reason: Gastroesophageal reflux disease (GERD) is not a typical complication of malnutrition, as it is caused by the backflow of gastric contents into the esophagus due to a weak or incompetent lower esophageal sphincter, not by inadequate food intake. Malnutrition may aggravate the symptoms of GERD, but it does not cause it.

Choice A reason: Consuming high-calorie foods early in the day is not a good strategy for weight loss, as it can lead to overeating and increased fat storage. The nurse should advise the client to eat a balanced breakfast that includes protein, fiber, and healthy fats, which can help curb appetite and boost metabolism.

Choice B reason: Limiting carbohydrate intake to 30 grams per day is too restrictive and may cause nutritional deficiencies, ketosis, and adverse effects on mood and cognition. The nurse should recommend a moderate carbohydrate intake of 45 to 65 percent of total calories, with an emphasis on complex carbohydrates from whole grains, fruits, vegetables, and legumes.

Choice C reason: Consuming 500 fewer calories per day can result in a weight loss of about 1 pound per week, which is a safe and realistic goal for a client who has a BMI of 35. The nurse should help the client identify sources of excess calories in their diet and suggest ways to reduce them, such as choosing low-calorie beverages, using smaller plates, and avoiding distractions while eating.

Choice D reason: Following a liquid meal plan for 4 weeks is not a sustainable or healthy way to lose weight, as it can cause muscle loss, electrolyte imbalance, and rebound weight gain. The nurse should encourage the client to eat regular meals that include a variety of foods from all food groups, with appropriate portion sizes and nutrient density.