Correct Answer: C

Rationale: The correct answer is C because an audible S3 in a client with mitral valve prolapse could indicate heart failure, which requires immediate assessment. Choice A is less urgent as occasional unifocal PVCs are common. Choice B is important but can be addressed after the client with an audible S3. Choice D, a client with pericarditis in normal sinus rhythm, is stable compared to a client with potential heart failure symptoms.

Correct Answer: D

Rationale: The correct answer is Vitamin K. Prolonged antibiotic use can disrupt the gut flora, leading to Vitamin K deficiency and an increased risk of bleeding. Vitamin A deficiency is not commonly associated with antibiotic use. Similarly, Vitamin B6 and Vitamin C deficiencies are not typically linked to prolonged antibiotic use.

Correct Answer: B

Rationale: The correct answer is B: Splenectomy. Splenectomy is the treatment of choice for hereditary spherocytosis as it helps prevent hemolysis and improve anemia. Removing the spleen reduces the destruction of the abnormal red blood cells. Choice A, Bone marrow transplant, is not a standard treatment for hereditary spherocytosis. Choice C, Frequent blood transfusions, may be used to manage anemia in some cases but is not the primary treatment for hereditary spherocytosis. Choice D, Liver biopsy, is not a treatment for hereditary spherocytosis; it is a procedure used to diagnose liver conditions, not related to this hematologic disorder.

Correct Answer: D

Rationale: The correct answer is to administer the Coumadin along with the heparin drip as ordered. Heparin and warfarin are often given together initially because warfarin takes a few days to become effective. Discontinuing the heparin drip before initiating Coumadin can increase the risk of clot formation. Checking the client's INR before starting Coumadin is important but not the immediate action required. Clarifying the order with the healthcare provider is not necessary as both medications are commonly used together.

Correct Answer: A

Rationale: Choice A is the best method of applying adult teaching principles because repeating information and addressing the client's questions as they arise is effective for reinforcing learning in adults. This approach allows for clarification of doubts and ensures that the client understands the information provided. Choice B is incorrect as teaching all the information in one session may overwhelm the client and hinder retention. Choice C is incorrect as using medical terms without ensuring the client's understanding may lead to confusion. Choice D is incorrect because waiting for the client to ask questions may result in missed opportunities to address important information proactively.