A nurse is caring for a client who has a pressure injury and is assessing the client's dietary intake. Which of the following factors should the nurse identify as a barrier to wound healing?

Phenelzine belongs to a class of antidepressants known as monoamine oxidase inhibitors (MAOIs). MAOIs work by inhibiting the activity of the enzyme monoamine oxidase, which results in increased levels of certain neurotransmitters in the brain, such as serotonin, norepinephrine, and dopamine. However, MAOIs have a significant dietary restriction due to their interaction with tyramine-containing foods. Tyramine is a substance found in various foods and beverages and can lead to a sudden and dangerous increase in blood pressure when combined with MAOIs, resulting in a hypertensive crisis.

A) Pepperoni pizza: Pepperoni is a processed meat product that is high in tyramine. Additionally, pizza often contains aged cheeses, which are also rich in tyramine. Therefore, consuming pepperoni pizza while taking phenelzine poses a risk of hypertensive crisis due to the high tyramine content.

B) Strawberry yogurt: Yogurt, particularly varieties without added fruit or flavorings, is generally considered low in tyramine and is thus a safer option for individuals taking MAOIs. Additionally, fresh strawberries are also low in tyramine, making strawberry yogurt a suitable choice for someone on phenelzine therapy.

C) Smoked salmon: Smoked or cured fish, such as smoked salmon, is another food high in tyramine. Therefore, it is not recommended for individuals taking MAOIs due to the risk of hypertensive crisis.

D) Cheddar cheese: Aged cheeses like cheddar contain high levels of tyramine and should be avoided by individuals on MAOIs. Consuming cheddar cheese while taking phenelzine increases the risk of a hypertensive crisis.

A) "Protein requirements decrease in times of stress": This statement is incorrect. During times of stress, such as illness or injury, the body's protein requirements often increase to support tissue repair, immune function, and other metabolic processes. Therefore, protein requirements typically increase rather than decrease during periods of stress.

B) "Glucose is broken down more slowly during times of stress": This statement is also incorrect. During stress, the body releases hormones such as cortisol and adrenaline, which promote the breakdown of glycogen into glucose, providing a quick energy source for the body's response to stress. Therefore, glucose is broken down more rapidly during times of stress to meet the increased energy demands.

C) "Acute stress causes an increase in metabolism": This statement is accurate. Acute stress triggers the release of stress hormones, such as cortisol and adrenaline, which can increase metabolism. These hormones stimulate processes such as gluconeogenesis (the production of glucose from non-carbohydrate sources), lipolysis (the breakdown of fats), and increased heart rate and blood pressure, all of which contribute to an increase in metabolic rate during acute stress.

D) "Stress causes a positive nitrogen balance in the body": This statement is incorrect. Stress, particularly severe or prolonged stress, can lead to a negative nitrogen balance in the body. During stress, there may be increased protein breakdown to provide amino acids for energy production and other metabolic needs. Additionally, stress can impair protein synthesis and utilization, leading to muscle wasting and a negative nitrogen balance.