Correct Answer: A

Rationale: The correct definition of drug absorption is the movement of a drug from the site of administration into various tissues of the body. It is the process by which a drug is taken up and enters the systemic circulation.

Correct Answer: C

Rationale: The correct answer is C. Taking aspirin along with Warfarin can increase the risk of bleeding. Clients should be advised to avoid medications that increase the risk of bleeding when taking Warfarin to prevent complications.

Correct Answer: B

Rationale: To administer 4 mg from a solution of 10 mg/mL, the healthcare professional should administer 0.4 mL. The calculation is done by dividing the desired dose (4 mg) by the concentration of the solution (10 mg/mL), which equals 0.4 mL.

Correct Answer: A

Rationale: An INR of 4.0 indicates that the client's blood is clotting too slowly, increasing the risk of bleeding. This level is above the therapeutic range for a client on Warfarin therapy. Therefore, the healthcare professional should notify the provider immediately to prevent potential bleeding complications.

Correct Answer: A

Rationale: Amlodipine, a calcium channel blocker, can cause peripheral edema (swelling of the ankles) as a side effect. This occurs due to the dilation of blood vessels and increased fluid retention. It is important for the client to monitor for ankle swelling as it could indicate a potential adverse reaction to the medication. Reporting this side effect to the healthcare provider is crucial to ensure appropriate management and potential adjustment of the treatment plan.