Correct Answer: A

Rationale: INR 2.0–3.0 is the standard therapeutic range for warfarin in conditions like atrial fibrillation or DVT, balancing clot prevention and bleeding risk. 4.0–5.0 and 3.0–4.9 risk bleeding; 1.0–2.0 is subtherapeutic, risking clots. 2.0–3.0 aligns with clinical guidelines.

Correct Answer: D

Rationale: Sexual abuse: While sexual abuse can cause physical and emotional symptoms, the combination of unexplained injuries and fussiness/irritability is more suggestive of physical trauma. Neglect: Neglect involves failure to provide for the child's basic needs, which can lead to developmental issues, but is less likely to cause unexplained injuries. Munchausen syndrome by proxy: Munchausen syndrome by proxy involves a caregiver fabricating or inducing illness in a child for attention. It can cause unexplained injuries, but the focus is more on medical symptoms. Shaken baby syndrome: Shaken baby syndrome results from violently shaking an infant, leading to physical injuries, irritability, and fussiness. It fits the description of unexplained injuries and behavioral changes.

Correct Answer: B

Rationale: Warfarin, an anticoagulant, increases bleeding risk. Avoiding aspirin (also a blood thinner) prevents excessive anticoagulation, showing understanding. High vitamin K intake counteracts warfarin by aiding clotting factor synthesis. Alcohol increases bleeding risk, and while electric razors reduce cuts, this isn’t specific to warfarin’s effects but a safety measure.

Correct Answer: B, D, E

Rationale: Lisinopril, an ACE inhibitor, requires specific instructions:
B) Pregnancy is a contraindication due to fetal harm risk, necessitating immediate notification.
D) A persistent dry cough is a common side effect due to bradykinin buildup, requiring reporting. E) Blood pressure monitoring is essential to assess efficacy.
A) Cholesterol monitoring isn’t directly tied to lisinopril, which targets blood pressure, not lipids.
C) Potassium-rich foods should be moderated, not increased, due to hyperkalemia risk with ACE inhibitors.

Correct Answer: A

Rationale: Planning to give his CD collection to his girlfriend: Giving away prized possessions is a common warning sign of suicidal intent, indicating that the person is preparing for their absence. Preferring to eat his meals while watching TV: This behavior is relatively normal and does not necessarily indicate suicidal intent. Stating that he wants to be with his peers more than with his parents: Wanting to spend time with peers is typical for adolescents and does not specifically indicate suicidal intent. Telling his parents that he doesn't want to talk about the attempt: Not wanting to discuss the attempt could be due to embarrassment, guilt, or other reasons, but it is not as direct an indicator of ongoing suicidal intent as giving away possessions.