Correct Answer: A

Rationale: Given the sudden-onset severe scrotal pain, swelling, and erythema, along with the physical examination findings of a tender, swollen, and high-riding testicle, the most likely diagnosis is testicular torsion. Testicular torsion occurs when the spermatic cord twists, leading to compromised blood flow to the testicle, causing ischemia and severe pain. It is considered a surgical emergency that requires prompt diagnosis and intervention to salvage the affected testicle. Prompt surgical detorsion is necessary to prevent irreversible testicular damage. While epididymitis, testicular trauma, and testicular tumors can also present with scrotal pain and swelling, the presence of a high-riding testicle in this context is highly suggestive of testicular torsion.

Correct Answer: B

Rationale: Avascular necrosis of the femoral head, also known as osteonecrosis, is a common complication associated with hip fractures in elderly patients. It occurs when there is a loss of blood supply to the femoral head following the fracture, leading to bone tissue death. This can result in pain, limitation of motion, and potentially the collapse of the femoral head, causing further complications. Timely diagnosis and appropriate management are crucial in order to prevent further degeneration of the hip joint. Other complications such as compartment syndrome, dislocation of the hip prosthesis, and Volkmann's contracture are not typically associated with hip fractures in elderly patients.

Correct Answer: C

Rationale: Colposcopy with biopsy is the most appropriate diagnostic test for evaluating a woman with suspected cervical dysplasia. Colposcopy is a procedure in which a special magnifying instrument called a colposcope is used to examine the cervix for any abnormal areas. If abnormal tissue is identified during colposcopy, a biopsy will be taken to confirm the presence of cervical dysplasia and determine the severity. This allows for a more accurate diagnosis and appropriate management of the condition. Pap smear, although a screening test for cervical dysplasia, may not provide a definitive diagnosis and may require further evaluation with colposcopy and biopsy. Endometrial biopsy and transvaginal ultrasound are not indicated for evaluating cervical dysplasia specifically.

Correct Answer: C

Rationale: When selecting participants for a qualitative research study, it is important to choose individuals who are able to articulate and reflect on the phenomenon being studied. This is crucial for gathering in-depth and rich data that can provide valuable insights for the study. Participants who can express their experiences, thoughts, and feelings clearly will allow the researcher to delve deeper into the research objectives and gain a more comprehensive understanding of the phenomenon under investigation. Selecting individuals with the ability to articulate and reflect ensures that the data collected will be meaningful and contribute significantly to the research findings. It is essential for qualitative researchers to prioritize such participants who can best meet the objectives of the study by offering detailed and insightful perspectives.

Correct Answer: D

Rationale: When a patient is crying and continuously pulling at a specific body part, such as Catherine pulling her right ear, it indicates discomfort or pain in that area. Nurse Selma's most appropriate action would be to further assess the description and frequency of the pain. This will help her identify the possible cause of the pain, whether it is due to an ear infection, injury, or any other underlying issue. Understanding the nature and intensity of the pain will guide Nurse Selma in providing appropriate care and intervention for Catherine. It is crucial to address the patient's pain promptly to ensure their comfort and well-being. Referring to the attending physician may be necessary after this initial assessment but assessing the pain should be the immediate priority.