Which factor is most likely to prolong the half-life of a medication in a patient?

Prepare for the Lippincott Pharmacology Exam with interactive flashcards and multiple-choice questions, each accompanied by detailed hints and explanations. Master your exam with ease!

The half-life of a medication is the time it takes for the concentration of the drug in the bloodstream to reduce by half. It is influenced by the drug's clearance, which can be affected by various physiological factors. When considering the impact of hepatic function on drug metabolism, decreased hepatic function tends to prolong the half-life of medications that are primarily metabolized by the liver.

The liver is a crucial organ in the biotransformation of many drugs, and impaired liver function can lead to decreased metabolic clearance of these drugs. This means that the medication may stay in the system longer, resulting in an increased half-life. In patients with low hepatic function, the drugs are less effectively metabolized and cleared, leading to higher drug levels in circulation for longer periods, which can necessitate careful monitoring to avoid toxicity.

In contrast, high renal function would typically lead to more efficient clearance of drugs that are primarily eliminated by the kidneys, thus decreasing their half-life. Increased cardiac output can enhance the distribution of drugs throughout the body, but it doesn't necessarily relate to the metabolic or elimination half-life. Low drug-protein binding might enhance the free fraction of a drug available for action but does not directly correlate with prolonging the half-life; instead, it may affect the

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