Which of the following has the shortest elimination half-life?

Correct Answer: D

Rationale: Elimination half-life measures how quickly a drug is cleared from plasma. Naloxone's half-life is about 1-2 hours, used for opioid reversal. Morphine's is 2-4 hours, reflecting its duration as an analgesic. Methadone's is long, 15-60 hours, suiting addiction maintenance. Fentanyl's is 2-4 hours, typical for anesthesia. Remifentanil, an ultra-short-acting opioid, has a half-life of 3-10 minutes due to rapid esterase metabolism, making it ideal for procedures needing quick offset. Its brevity contrasts with others, ensuring minimal residual effects, a key advantage in critical care settings where rapid recovery is essential.

Correct Answer: D

Rationale: It is important to educate a patient that Regular Insulin should be injected subcutaneously to ensure proper absorption of the medication. Injecting the insulin into the subcutaneous tissue allows for a slower and more consistent absorption of the medication, which helps in controlling blood glucose levels effectively. Administering insulin subcutaneously also minimizes the risk of complications associated with other injection sites or techniques.

Correct Answer: A

Rationale: ACE inhibitors like Lisinopril are preferred in diabetics with proteinuria due to their nephroprotective effects.

Correct Answer: D

Rationale: Oxygen is the most important initial intervention for a patient with a low pulse oximeter reading (85%) to correct hypoxia and prevent further complications. While epinephrine (A) and albuterol (C) are used to treat asthma, oxygen is the priority to address the immediate hypoxia. Sodium bicarbonate (B) is not indicated unless there is severe metabolic acidosis.

Correct Answer: A

Rationale: The nurse should include the instruction to avoid drinking large amounts of green tea when providing dietary teaching for a patient receiving warfarin (Coumadin) therapy because green tea contains vitamin K, which can interfere with the anticoagulant effects of warfarin. Maintaining consistent intake of vitamin K is important to ensure the effectiveness of warfarin therapy. Therefore, it is recommended for patients on warfarin to consume a consistent amount of vitamin K-containing foods and avoid sudden, significant changes in their intake.