Correct Answer: D

Rationale: The correct answer is D. Black, tarry stools can indicate gastrointestinal bleeding, a serious adverse effect of warfarin that requires immediate medical attention. Option A is incorrect because while bruising is a common side effect of warfarin, it is not limited to the elbows. Option B is incorrect as a red rash is not a typical adverse effect of warfarin. Option C is also incorrect because developing a cough is not a reason to discontinue warfarin unless advised by a healthcare provider.

Correct Answer: C

Rationale: Agreeing to heat up the seaweed soup respects the client's cultural preferences and promotes a positive postpartum experience. Seaweed soup is a traditional food in some cultures, often believed to support recovery and breastfeeding. The nurse's supportive response fosters cultural sensitivity, which is crucial in providing patient-centered care.

Correct Answer: A

Rationale: In osteoarthritis, joint pain that improves with rest is a common characteristic due to the relief obtained by reducing weight-bearing on the affected joint. Joint stiffness that improves with movement is more indicative of rheumatoid arthritis, not osteoarthritis. Red, warm joints are typically seen in inflammatory arthritis conditions like rheumatoid arthritis, while systemic inflammation is not a primary feature of osteoarthritis.

Correct Answer: C

Rationale: The correct answer is C: Sodium 140 mEq/L. An elevated sodium level can affect the effectiveness of digoxin therapy and may lead to toxicity. Therefore, it is crucial to report this value to the provider. Potassium, calcium, and magnesium levels are important as well, but elevated sodium can have a more direct impact on digoxin therapy in this scenario.

Correct Answer: A

Rationale: The correct answer is A: Increased creatinine. In chronic kidney disease, the kidneys are unable to filter waste effectively, leading to a buildup of creatinine in the blood. This results in increased creatinine levels in laboratory tests. Choice B, increased hemoglobin, is not typically associated with chronic kidney disease. Choice C, increased bicarbonate, is also not a common finding in chronic kidney disease; in fact, metabolic acidosis with decreased bicarbonate levels is more common. Choice D, increased calcium, is not expected in chronic kidney disease; instead, calcium levels may be low due to impaired kidney function.