A nurse is caring for a client who has a new diagnosis of bladder cancer. Which of the following interventions should the nurse take to promote comfort?

Choice A reason : Decreased blood pressure is not a typical response to the fight-or-flight reaction. During this response, blood pressure usually increases due to the release of stress hormones like adrenaline, which cause the heart to beat faster and harder.

Choice B reason : Dilated pupils are a common manifestation of the fight-or-flight response. This physiological change allows more light into the eyes, which can improve vision and help an individual to better assess the situation and respond to potential threats.

Choice C reason : Bronchial airway constriction is not associated with the fight-or-flight response. In fact, the bronchial airways typically dilate to increase airflow and oxygen intake to prepare the body for action.

Choice D reason : Hypoglycemia, or low blood sugar, is not a direct result of the fight-or-flight response. The body actually mobilizes glucose stores, leading to elevated blood sugar levels, to provide energy for muscles during a stress response.

Choice A reason : Dry mouth, also known as xerostomia, is a common side effect of diphenhydramine, an antihistamine used to treat insomnia among other conditions. It occurs because diphenhydramine has anticholinergic properties, which means it inhibits the action of the neurotransmitter acetylcholine. This inhibition can reduce saliva production, leading to a feeling of dryness in the mouth.

Choice B reason : Hypertension, or high blood pressure, is not a typical side effect of diphenhydramine. While some medications, particularly decongestants, can raise blood pressure, diphenhydramine does not usually have this effect. However, individuals with pre-existing heart conditions should consult a healthcare provider before using it.

Choice C reason : Memory loss is not commonly listed as a side effect of diphenhydramine. However, because it can cause drowsiness and has sedative effects, it may lead to temporary forgetfulness or confusion, especially in older adults or when taken in higher doses.

Choice D reason : 'Medications' is not an adverse reaction but rather a general term for drugs used to diagnose, treat, or prevent illness. In the context of diphenhydramine, it would be more appropriate to discuss specific side effects or adverse reactions related to its use.