Correct Answer: B

Rationale: Performing a wound culture before applying antibiotics is crucial to identify the specific pathogen causing the infection. This helps in selecting the most effective antibiotics for treatment. Changing the wound dressing, applying a wet-to-dry dressing, or cleansing the wound are important interventions but should follow the assessment and identification of the infecting organism through a wound culture to guide appropriate treatment.

Correct Answer: A

Rationale: Corrected Rationale: Bradycardia is a common sign of hypoglycemia due to the body's response to low blood sugar. During hypoglycemia, the body releases epinephrine, leading to sympathetic nervous system activation. This can result in bradycardia as a compensatory mechanism to preserve glucose for vital organs such as the brain. Tachycardia, hypotension, and diaphoresis are more commonly associated with hypoglycemia when it progresses to severe stages and the body's compensatory mechanisms are overwhelmed.

Correct Answer: A

Rationale: The correct answer is A: Leg pain, swelling, and redness are early signs of DVT. DVT (Deep Vein Thrombosis) is a condition where blood clots form in deep veins, commonly in the legs. These clots can cause symptoms like pain, swelling, and redness in the affected leg. Choices B, C, and D describe symptoms more commonly associated with other conditions like pulmonary embolism (shortness of breath and high fever), respiratory issues (cough and chest pain), and cardiovascular problems (decreased oxygen saturation and low blood pressure), respectively. Therefore, they are not indicative of early signs of DVT.

Correct Answer: B

Rationale: The correct action for the nurse to assist the client who is experiencing difficulty voiding after the removal of an indwelling catheter is to pour warm water over the perineum. This technique can help stimulate urination by promoting relaxation of the perineal muscles and improving blood flow to the area. Assessing for bladder distention after 4 hours (Choice A) is important but not the immediate intervention needed to assist the client in voiding. Restricting the client's oral fluid intake (Choice C) can exacerbate the issue by reducing urine production. Restricting movement for at least 12 hours (Choice D) is unnecessary and may lead to discomfort and other complications.

Correct Answer: B

Rationale: The correct instruction the nurse should reinforce with the client undergoing radiation therapy is to avoid using perfumed lotions. This is essential to reduce the risk of skin irritation, as perfumed lotions can exacerbate skin reactions during radiation therapy. Applying sunscreen before going outside is generally a good practice but not specifically related to radiation therapy. Massaging the area daily is contraindicated during radiation therapy as it can further irritate the skin. Taking vitamin supplements with food is important for overall health but is not a specific instruction related to radiation therapy.