Correct Answer: B

Rationale: Irrigating the wound with sterile normal saline is the correct technique for cleansing a wound when the prescription does not specify a cleaning method. Sterile normal saline is a standard and safe solution that helps to remove debris and promote healing without damaging healthy tissue. Choice A, using povidone-iodine solution, can be cytotoxic and delay wound healing. Choice C, using hydrogen peroxide, can be cytotoxic, cause tissue damage, and delay wound healing. Choice D, using wet-to-dry dressing to remove eschar, is an outdated and non-selective method that can cause trauma to the wound bed and delay healing. Therefore, choice B is the best option for wound cleansing in this scenario.

Correct Answer: B

Rationale: The correct answer is B. Rheumatic fever often follows a strep throat infection, which is why the nurse should suspect this association. Strep throat is caused by Group A Streptococcus bacteria, which can trigger an abnormal immune response leading to rheumatic fever. Choices A, C, and D are incorrect because chickenpox, ear infections, and fungal skin infections are not typically associated with rheumatic fever.

Correct Answer: D

Rationale: A saturated abdominal dressing may indicate active bleeding or other complications that require immediate intervention, such as ensuring hemostasis and preventing further complications. Absent bowel sounds are common in the immediate post-operative period and may not require immediate intervention unless accompanied by other symptoms. A pain level of 8/10 can be managed with appropriate pain medication and is not typically considered an immediate priority unless other indications suggest complications. A temperature of 100.4°F is slightly elevated but may not be a cause for immediate concern unless it is associated with other signs of infection or distress that would warrant urgent attention.

Correct Answer: B

Rationale: To calculate the flow rate in drops per minute (gtt/min), the formula is Total volume (mL) · Time (min) · Drop factor (gtt/mL). In this case, 1000 mL · 240 min · 20 gtt/mL = 83 gtt/min. Therefore, setting the flow rate to 83 gtt/min ensures the correct administration of the IV fluids and medication. Choices A, C, and D are incorrect as they do not align with the correct calculation based on the provided information.

Correct Answer: A

Rationale: Specific gravity measures the concentration of solutes in the urine, reflecting the kidney's ability to concentrate or dilute urine. Choice B, bacteria in the urine, is incorrect because specific gravity does not measure bacterial presence. Choice C, pH level of the urine, is incorrect as it refers to the acidity or alkalinity of the urine, not its specific gravity. Choice D, glucose in the urine, is incorrect as specific gravity does not directly measure glucose levels in urine.