Adenosine is rapidly metabolized and its effects are not influenced by liver or renal dysfunction. Which statement is true?

Adenosine is rapidly metabolized and its effects are not influenced by liver or renal dysfunction. Which statement is true?

• A. True
• B. False
• C. Only liver dysfunction affects it
• D. Only renal dysfunction affects it

Answer: (A)

Adenosine has an ultra-short half-life because it is cleared from the blood extremely quickly through rapid cellular uptake and metabolism (to inosine) by adenosine deaminase. This fast inactivation happens largely independent of how well the liver or kidneys are functioning, so liver or renal dysfunction does not meaningfully change the duration or intensity of its effect. Therefore, the statement that its effects are not influenced by liver or renal dysfunction is true. In practice, no dose adjustment is typically needed for hepatic or renal impairment.

Adenosine has an ultra-short half-life because it is cleared from the blood extremely quickly through rapid cellular uptake and metabolism (to inosine) by adenosine deaminase. This fast inactivation happens largely independent of how well the liver or kidneys are functioning, so liver or renal dysfunction does not meaningfully change the duration or intensity of its effect. Therefore, the statement that its effects are not influenced by liver or renal dysfunction is true. In practice, no dose adjustment is typically needed for hepatic or renal impairment.