Correct Answer: A

Rationale: The correct answer is A: Decrease in dysuria. Antimuscarinic medications target muscarinic receptors, which are involved in the contraction of smooth muscle in the bladder. Dysuria, or painful urination, is a common symptom of overactive bladder or bladder spasms, which can be relieved by antimuscarinics. Choices B, C, and D are related to other urinary symptoms such as urgency, frequency, and prostate size, respectively, which are not directly targeted by antimuscarinics. Therefore, only a decrease in dysuria indicates therapeutic effects of the medication.

Correct Answer: B

Rationale: The correct answer is B because Rh incompatibility occurs when an Rh-negative mother carries an Rh-positive fetus. If fetal blood enters the mother's circulation during pregnancy or childbirth, the mother's immune system can produce antibodies against Rh-positive red blood cells, leading to potential harm to future pregnancies. Choices A, C, and D are incorrect because Rh incompatibility does not occur when the fetus is Rh-negative, the father is Rh-positive, or both the father and fetus are Rh-negative.

Correct Answer: B

Rationale: The correct answer is B. By asking the patient to demonstrate the instillation of medications, the nurse can directly assess the patient's ability to self-administer the medications safely and effectively. This method allows for a practical demonstration of skills, which is more reliable than relying solely on verbal descriptions or past experiences. Choices A, C, and D are incorrect because assessing for previous inability, describing the method, or evaluating functional status may not directly demonstrate the patient's competency in self-administering ocular medications.

Correct Answer: A

Rationale: The correct answer is A: Perianal region and oral mucosa. In patients with AIDS, these areas are more prone to opportunistic infections due to decreased immune function. The perianal region can be affected by conditions like anal warts or herpes, while the oral mucosa can develop oral thrush or other oral infections. By prioritizing assessment of these areas, the nurse can promptly identify any potential issues and initiate appropriate interventions. Choice B: Sacral region and lower abdomen are not typically high-risk areas for skin integrity issues in AIDS patients. Choice C: Scalp and skin over the scapulae are not commonly affected by opportunistic infections related to AIDS. Choice D: Axillae and upper thorax are not as commonly affected as the perianal region and oral mucosa in AIDS patients.

Correct Answer: A

Rationale: The correct answer is A: Wear a medical identification bracelet. This is important because in case of an emergency, such as an allergic reaction, medical professionals need to be aware of the child's severe food allergy quickly. The bracelet provides crucial information that can help in providing timely and appropriate medical care. B: Knowing how to use the antihistamine pen is also important in managing allergic reactions, but wearing a medical identification bracelet takes precedence as it provides immediate identification of the allergy. C: Knowing how to give injections of lidocaine is not relevant to managing a food allergy in a child. D: Avoiding live attenuated vaccinations may be necessary for individuals with certain allergies, but it is not directly related to educating parents about managing the child's food allergy.