Complete the following sentence using the options in the drop down selection.  _____ Is what the body does with the drug versus ____  which is what the drug does to the body.

A. Absorption:
Chronic liver failure primarily affects the metabolism of drugs rather than their absorption. While liver disease can impact various bodily functions, the absorption of medications is generally more influenced by gastrointestinal factors and not as directly affected by liver function.

B. Excretion:
Excretion of drugs is primarily managed by the kidneys, not the liver. While liver failure can lead to changes in drug metabolism, it does not directly impair the excretion process, which is largely renal. However, compromised liver function can indirectly affect renal excretion due to altered pharmacokinetics.

C. Metabolism:
Liver failure significantly affects drug metabolism. The liver is the primary site for the metabolism of many medications, converting drugs into more water-soluble compounds for excretion. In chronic liver failure, the liver's ability to metabolize drugs is impaired, leading to potential drug accumulation and increased risk of toxicity. This step of pharmacokinetics is most directly impacted by liver dysfunction.

D. Distribution:
While liver function can affect drug distribution to some extent, it is not as directly impacted as metabolism. Distribution can be influenced by factors such as changes in plasma protein levels and blood flow, but the liver's primary role in drug metabolism is more directly affected by chronic liver failure.

A. Wait for at least another 30 minutes before calling to have the level drawn:
For oral medications, peak drug levels are typically drawn 1 to 2 hours after administration, depending on the medication's pharmacokinetics. Since the client took the medication only 30 minutes ago, it is premature to draw the level now. Waiting an additional 30 minutes would align with the typical peak times for oral medications, ensuring that the drug level reflects its peak concentration.

B. Schedule the level to be drawn in 8 hours:
Drawing the peak level 8 hours after administration would likely be too late, as most oral medications reach their peak concentration within 1 to 2 hours. Scheduling the level for 8 hours later may result in an inaccurate measurement of the peak drug level, leading to potentially misleading clinical information.

C. Call the lab to have the medication level drawn immediately:
Drawing the level immediately after 30 minutes may not provide an accurate representation of the peak drug level. Oral medications generally reach peak levels later, and an early draw could result in a falsely low measurement that does not reflect the drug's maximum concentration.

D. Arrange for the level to be drawn tomorrow since the peak time has passed:
The peak time has not passed, as the medication was only administered 30 minutes ago. Drawing the level tomorrow would be far too late to assess the peak concentration accurately, which is essential for evaluating the effectiveness and safety of the medication.