A nurse is teaching a class about physiological changes that occur during non-rapid eye movement sleep. Which of the following changes occur during non-rapid eye movement sleep?

Choice A reason: Alcohol potentiates glimepiride’s hypoglycemic effect by inhibiting gluconeogenesis and increasing insulin sensitivity, risking severe hypoglycemia. It also competes with glimepiride for liver metabolism via cytochrome P450, potentially altering drug levels, increasing the risk of adverse effects like low blood sugar, which affects brain glucose supply.

Choice B reason: Grapefruit juice inhibits cytochrome P450 3A4, not significantly affecting glimepiride, which is metabolized by CYP2C9. It does not directly impact blood glucose or glimepiride’s sulfonylurea mechanism, which stimulates pancreatic beta cells to release insulin, making it safe for consumption with this medication.

Choice C reason: Milk does not interact with glimepiride pharmacologically. It contains lactose, a sugar, but in small amounts that minimally affect blood glucose. Glimepiride’s action on insulin release is unaffected by milk, making it a safe drink, as it does not alter drug metabolism or glycemic control.

Choice D reason: Green tea has antioxidants but no significant interaction with glimepiride. It does not affect CYP2C9 metabolism or insulin release from pancreatic beta cells. Its minimal caffeine content may slightly raise blood glucose, but this does not contraindicate its use, making it safe with glimepiride.

Choice A reason: Anxiety typically causes peripheral vasoconstriction, not vasodilation, due to sympathetic nervous system activation. This “fight-or-flight” response increases catecholamine release, constricting peripheral blood vessels to redirect blood to vital organs. Vasodilation is more associated with relaxation or heat dissipation, not the heightened arousal state of anxiety, making this incorrect.

Choice B reason: Hyperventilation is a common finding in anxiety, as the sympathetic nervous system stimulates rapid, shallow breathing to increase oxygen supply during perceived stress. This can lower carbon dioxide levels, causing respiratory alkalosis, dizziness, or tingling. It reflects the body’s attempt to prepare for action, making it a hallmark physiological response in anxiety.

Choice C reason: Bradycardia, or slowed heart rate, is not typical in anxiety. Anxiety activates the sympathetic nervous system, increasing heart rate (tachycardia) to enhance blood flow to muscles and organs. Bradycardia is more associated with parasympathetic dominance, such as in relaxation or vagal stimulation, making it an incorrect finding for anxiety.

Choice D reason: Drowsiness is not expected in anxiety, which is characterized by heightened alertness and arousal due to sympathetic activation. Anxiety typically causes restlessness, difficulty concentrating, or insomnia, as the body remains in a hypervigilant state. Drowsiness may occur in other conditions, like depression, but is not a primary feature of anxiety.