Correct Answer: B

Rationale: Administering the vaccine intramuscularly to a child with hemophilia is preferred to reduce the risk of bleeding. Hemophiliac individuals have a decreased ability to form blood clots, and administering vaccines intramuscularly reduces the risk of bleeding compared to subcutaneous administration. Using an appropriate needle length and applying pressure to the site post-injection are important steps, but choosing the intramuscular route is crucial in this case to minimize bleeding complications.

Correct Answer: B

Rationale: When captopril, an ACE inhibitor, is combined with lithium, it can lead to lithium accumulation. Therefore, monitoring lithium levels is crucial to prevent toxicity. While ACE inhibitors like captopril can cause hyperkalemia, renal insufficiency, and hypotension, the risk of these effects is not increased by the combination of lithium and captopril.

Correct Answer: D

Rationale: The healthcare professional should refer an infant who is not making babbling sounds by the age of 7 months to a provider for a more extensive evaluation of hearing. Babbling sounds are a developmental milestone that typically occurs by 7 months of age. Delayed or absent babbling can indicate potential hearing issues that warrant further assessment.

Correct Answer: D

Rationale: The correct statement is D because giving the child water after administering digoxin helps ensure the medication is swallowed properly. Mixing the medication with juice (choice A) may affect its absorption. Giving the medication with meals (choice B) may interfere with its effectiveness. Administering a second dose if the child vomits (choice C) is not recommended as it may lead to an overdose.

Correct Answer: D

Rationale: Patients experiencing priapism from sildenafil should seek immediate medical attention. Priapism is a serious condition where an erection lasts longer than 4 hours, and if left untreated, it can lead to irreversible damage to the penile tissue, potentially causing permanent erectile dysfunction. Therefore, prompt intervention is crucial to prevent long-term complications.