The half-life of any drug given to an infant with kidney or liver dysfunction will be:

Enhance your readiness for the MEDNAX Neonatal Nurse Practitioner Exam. Utilize flashcards, multiple-choice questions, and detailed explanations. Equip yourself for success!

Multiple Choice

The half-life of any drug given to an infant with kidney or liver dysfunction will be:

Explanation:
The key idea is that how long a drug stays in the body (its half-life) depends mainly on how quickly it’s cleared. In infants, kidneys and liver are often immature, and dysfunction makes this clearance even slower. If renal function is impaired, the kidneys remove less drug, and if hepatic function is impaired, the liver metabolizes or clears less drug. Since half-life is determined by clearance (t1/2 ≈ 0.693 × Vd / CL), a drop in clearance means the half-life increases. So the half-life will be prolonged in an infant with kidney or liver dysfunction. This slower elimination can lead to drug accumulation if dosing isn’t adjusted, which is why dosing intervals or doses may need modification.

The key idea is that how long a drug stays in the body (its half-life) depends mainly on how quickly it’s cleared. In infants, kidneys and liver are often immature, and dysfunction makes this clearance even slower. If renal function is impaired, the kidneys remove less drug, and if hepatic function is impaired, the liver metabolizes or clears less drug. Since half-life is determined by clearance (t1/2 ≈ 0.693 × Vd / CL), a drop in clearance means the half-life increases. So the half-life will be prolonged in an infant with kidney or liver dysfunction. This slower elimination can lead to drug accumulation if dosing isn’t adjusted, which is why dosing intervals or doses may need modification.

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy