Correct Answer: D

Rationale: Multiple sex partners are not a recognized risk factor for breast cancer. Breast cancer is primarily influenced by hormonal, genetic, and environmental factors, not sexual activity or the number of sexual partners. Established risk factors for breast cancer include family history, hormonal factors such as early menarche, late menopause, and nulliparity (having no children), as well as certain environmental exposures.

Correct Answer: D

Rationale: Hodgkin's disease (Hodgkin's lymphoma) is a type of cancer that originates in the lymphatic system, particularly affecting the lymph nodes. A hallmark sign of Hodgkin's disease is the painless enlargement of lymph nodes, often in the neck, armpit, or groin. These enlarged lymph nodes are typically firm and rubbery to the touch. This is one of the most distinctive and common early signs that healthcare providers look for when diagnosing the disease.

Correct Answer: C

Rationale: After an open hemicolectomy (surgical removal of part of the colon), monitoring the surgical wound for signs of dehiscence (wound reopening) is a critical nursing priority. Dehiscence is a serious postoperative complication that can occur if the surgical site does not heal properly. Regular wound assessments every 4 hours allow the nurse to identify early signs of complications, such as redness, swelling, increased drainage, or separation of the wound edges. Early detection is key to preventing further complications, such as infection or evisceration (protrusion of abdominal organs through the wound).

Correct Answer: B

Rationale: Erythropoietin therapy is used to stimulate the production of red blood cells in patients with myelodysplastic syndrome (MDS), a disorder characterized by ineffective blood cell production, including red blood cells. The primary goal of erythropoietin therapy is to increase red blood cell count, improving the patient's oxygen-carrying capacity and reducing symptoms of anemia, such as fatigue and weakness. Monitoring hemoglobin levels is the best way to evaluate the effectiveness of this therapy because it directly reflects the patient's red blood cell count and the success of erythropoiesis (red blood cell production).

Correct Answer: B

Rationale: Nausea and vomiting are among the most common and distressing side effects of chemotherapy. Chemotherapy drugs target rapidly dividing cells, including cancer cells, but they also affect healthy cells in the gastrointestinal (GI) tract, triggering the release of chemicals that stimulate the brain's vomiting center. These side effects can occur immediately (acute), be delayed, or even anticipatory, and often require management with antiemetic (anti-nausea) medications to improve the patient's comfort and quality of life during treatment.