A nurse is caring for a client who follows a vegan diet. The nurse should identify that the client is at risk for which of the following deficiencies?

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.

Choice D reason: A calorie reduction of 500 fewer calories per day can result in a weight loss of about 0.45 kg (1 lb) per week, which is a safe and realistic goal for most clients. A pound of fat contains about 3,500 calories, so reducing the daily intake by 500 calories can create a deficit of 3,500 calories per week.

Choice A reason: A weight loss of 0.45 kg (1 lb) per day is too rapid and unhealthy, as it can cause dehydration, electrolyte imbalance, muscle loss, and metabolic slowdown. It can also be unsustainable and lead to weight regain. A calorie reduction of 500 fewer calories per day cannot achieve such a drastic weight loss.

Choice B reason: A weight loss of 0.23 kg (0.5 lb) per day is also too rapid and unhealthy, for the same reasons as choice A. A calorie reduction of 500 fewer calories per day cannot achieve such a drastic weight loss.

Choice C reason: A weight loss of 0.23 kg (0.5 lb) per week is too slow and unlikely, as it would require a calorie reduction of only 250 fewer calories per day. This is not enough to create a significant deficit and stimulate weight loss. A calorie reduction of 500 fewer calories per day can result in a faster weight loss.