Elevated catecholamines in urine typically cause all of the following symptoms except which one?

Elevated catecholamines in urine typically cause all of the following symptoms except which one?

• A. Tachycardia
• B. Anxiety
• C. Hypoglycemia
• D. Thermogenesis

Answer: (C)

Elevated catecholamines trigger sympathetic system effects: they increase heart rate and contractility (tachycardia), raise arousal and anxiety, and boost metabolic heat production (thermogenesis). They also raise blood glucose by promoting hepatic glycogenolysis and gluconeogenesis and by inhibiting insulin release, leading to hyperglycemia rather than low glucose. Because of these actions, hypoglycemia is not a typical consequence of catecholamine excess, making it the exception.

Elevated catecholamines trigger sympathetic system effects: they increase heart rate and contractility (tachycardia), raise arousal and anxiety, and boost metabolic heat production (thermogenesis). They also raise blood glucose by promoting hepatic glycogenolysis and gluconeogenesis and by inhibiting insulin release, leading to hyperglycemia rather than low glucose. Because of these actions, hypoglycemia is not a typical consequence of catecholamine excess, making it the exception.