Correct Answer: B

Rationale: The correct answer is to obtain a 12-lead electrocardiogram (ECG). This action is crucial in assessing the heart's electrical activity and helps in the evaluation of chest pain. Administering nitroglycerin (Choice A) may be necessary but should come after obtaining the ECG to confirm the diagnosis. Checking vital signs (Choice C) is important but does not provide direct information about the heart's electrical status. Placing the client on continuous telemetry (Choice D) may be appropriate later but does not provide immediate information on the heart's electrical activity as an ECG does.

Correct Answer: B

Rationale: Clients on warfarin are at increased risk of bleeding due to its anticoagulant effects. Using an electric razor reduces the risk of cuts and bleeding, which is an important safety precaution. While leafy greens should not be avoided, their intake should be consistent to maintain a stable level of vitamin K in the body. Monitoring blood pressure daily is important for other conditions but not directly related to warfarin therapy. Avoiding bananas and oranges is not a standard instruction for clients on warfarin.

Correct Answer: D

Rationale: In this scenario, the patient's presentation with periorbital bruising and bloody ear drainage suggests a basilar skull fracture. Projectile vomiting, as described in choice D, is concerning for increased intracranial pressure due to the skull fracture. This finding warrants immediate intervention to prevent further neurological compromise. Choices A, B, and C are not the priority in this situation. Rebound abdominal tenderness (choice A) is indicative of intra-abdominal injury but is not as urgent as managing potential intracranial issues. Diminished breath sounds (choice B) and rib pain with deep inspiration (choice C) may suggest underlying chest injuries, which need attention but are not as immediately life-threatening as increased intracranial pressure.

Correct Answer: C

Rationale: When a client on heparin reports tarry stools, it can be indicative of gastrointestinal bleeding. The correct action for the nurse is to monitor the stools for blood and review the Partial Thromboplastin Time (PTT) results. This is essential to detect any potential bleeding complications associated with heparin therapy. Option A is incorrect because warfarin is not the immediate intervention for tarry stools in a client on heparin. Option B is irrelevant to the situation described. Option D is incorrect as Vitamin K is the antidote for warfarin, not heparin.

Correct Answer: B

Rationale: Administering prescribed IV antibiotics is the most crucial intervention in managing an infected foot ulcer in a client with diabetes mellitus. Antibiotics help combat the infection and prevent its spread systemically, which is vital in diabetic clients to prevent serious complications like sepsis. While obtaining a wound culture (Choice A) may provide valuable information for targeted antibiotic therapy, administering antibiotics promptly takes precedence to prevent the infection from worsening. Elevating the affected foot (Choice C) can help reduce swelling but is not as urgent as administering antibiotics. Consulting the wound care nurse (Choice D) may be beneficial for long-term wound management but does not address the immediate need to control the infection.