Correct Answer: A

Rationale: Step 1: Mammograms use low-dose X-rays to create images of the breast tissue. Step 2: The radiation exposure in a mammogram is minimal and considered safe. Step 3: Choice A is correct as it states that mammograms do not use radiation, which is accurate. Step 4: Other choices are incorrect because B wrongly implies that annual mammograms are safe due to low radiation levels, C is incorrect as radiation effects can accumulate over time, and D is incorrect as the amount of radiation in a mammogram is much lower than an hour of sunlight.

Correct Answer: D

Rationale: The correct answer is D: Psychotherapy. In the case of psychogenic erectile dysfunction, the underlying cause is psychological rather than physical. Psychotherapy helps address the mental health factors contributing to the condition, such as anxiety or relationship issues. It can help the patient understand and manage their emotions, thoughts, and behaviors related to the dysfunction. Penile implant (A) and PDE-5 inhibitors (B) are more appropriate for physical causes of erectile dysfunction. Physical therapy (C) focuses on musculoskeletal conditions and would not be effective for psychogenic causes.

Correct Answer: A

Rationale: The correct answer is A: Ineffective Airway Clearance. In a patient with AIDS and PCP, maintaining clear airways is crucial to prevent respiratory distress and hypoxia. Pneumocystis pneumonia can cause thick secretions and mucus plugging, leading to difficulty breathing. Ensuring effective airway clearance is a priority to optimize oxygenation and prevent respiratory complications. Impaired oral mucous membranes (B) and imbalanced nutrition (C) are important considerations but not as immediate as airway clearance. Activity intolerance (D) may be a concern for the patient but ensuring adequate oxygenation takes precedence.

Correct Answer: A

Rationale: The correct answer is A: Depression. In the context of the stages of death and dying proposed by Elisabeth Kübler-Ross, a patient exhibiting signs of loss, grief, and intense sadness is likely in the depression stage. This stage involves feelings of hopelessness, despair, and sorrow as the patient comes to terms with the reality of their situation. Denial (choice B) is characterized by a refusal to accept the diagnosis, anger (choice C) involves feelings of resentment and frustration, and resignation (choice D) signifies a sense of acceptance and peace. In this scenario, the patient's emotional state aligns most closely with depression, indicating a deep sense of sadness and mourning.

Correct Answer: A

Rationale: The correct answer is A: Maintaining a closed urinary drainage system. This action prevents infection by reducing exposure to external pathogens. Step 1: A closed system minimizes the risk of contamination. Step 2: It prevents entry of bacteria into the urinary tract. Step 3: Regularly emptying the drainage bag helps maintain a closed system. Step 4: This action promotes patient safety and reduces infection risk. Summary: Choice B (strict clean technique) may reduce infection risk during catheter insertion but does not prevent infections post-insertion. Choice C (replacing drainage bag once per shift) increases infection risk due to frequent disconnection. Choice D (fully inflating catheter balloon) is unrelated to infection prevention.