A woman with breast cancer is undergoing chemotherapy. Which side effect would the nurse interpret as being most serious?
Vomiting
Fatigue
Hair loss
Myelosuppression
The Correct Answer is D
Choice A: Vomiting is not the most serious side effect because it is a common and manageable side effect of chemotherapy. Vomiting is a reflex action that expels the contents of the stomach through the mouth. It can be caused by various factors such as nausea, motion sickness, or infection. It can also be caused by chemotherapy, which can irritate the lining of the stomach or trigger the vomiting center in the brain. Vomiting can be prevented or treated with antiemetic drugs, hydration, and dietary changes.
Choice B: Fatigue is not the most serious side effect because it is a common and manageable side effect of chemotherapy. Fatigue is a condition that causes extreme tiredness or exhaustion that is not relieved by rest or sleep. It can be caused by various factors such as anemia, inflammation, or pain. It can also be caused by chemotherapy, which can damage healthy cells and tissues and affect the body's energy production. Fatigue can be managed with exercise, nutrition, and stress reduction.
Choice C: Hair loss is not the most serious side effect because it is a common and temporary side effect of chemotherapy. Hair loss is a condition that causes hair to fall out from the scalp or other parts of the body. It can be caused by various factors such as genetics, hormones, or infection. It can also be caused by chemotherapy, which can target rapidly dividing cells such as hair follicles and prevent hair growth. Hair loss usually occurs within two to four weeks after starting chemotherapy and reverses within six months after stopping chemotherapy.
Choice D: Myelosuppression is the most serious side effect because it is a rare and life-threatening side effect of chemotherapy. Myelosuppression is a condition that causes a decrease in the production of blood cells in the bone marrow. It can lead to anemia (low red blood cells), neutropenia (low white blood cells), and thrombocytopenia (low platelets), which can cause symptoms such as weakness, infection, and bleeding. It can also be caused by chemotherapy, which can target rapidly dividing cells such as bone marrow cells and impair blood cell formation. Myelosuppression requires close monitoring and treatment with blood transfusions, growth factors, or antibiotics.

Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A: The social worker is not the correct answer because they are not legally responsible for obtaining informed consent for an invasive procedure. The social worker is a professional who provides psychosocial support and advocacy for clients and families, such as counseling, referrals, or discharge planning.
Choice B: The nurse is not the correct answer because they are not legally responsible for obtaining informed consent for an invasive procedure. The nurse is a professional who provides direct care and education for clients and families, such as assessment, medication administration, or teaching. However, the nurse can assist the physician in obtaining informed consent by witnessing the client's signature, verifying the client's understanding, or documenting the process.
Choice C: The physician is the correct answer because they are legally responsible for obtaining informed consent for an invasive procedure. The physician is a professional who diagnoses and treats clients and families, such as performing surgery, prescribing medication, or ordering tests. The physician must explain the purpose, benefits, risks, alternatives, and consequences of the procedure to the client and obtain their voluntary agreement before proceeding.
Choice D: The unit secretary is not the correct answer because they are not legally responsible for obtaining informed consent for an invasive procedure. The unit secretary is a staff member who performs clerical and administrative tasks for the unit, such as answering phones, filing records, or scheduling appointments.

Correct Answer is ["B","D","E","F"]
Explanation
Choice A: Cardiac complications are not the correct answer because they are not the main cause of the high infant mortality rate. Cardiac complications are problems that affect the heart or blood vessels of the newborn, such as congenital heart defects, arrhythmias, or heart failure. They can cause serious symptoms such as cyanosis, difficulty breathing, or poor feeding. However, they account for only about 5% of all infant deaths in the United States.
Choice B: Necrotizing enterocolitis is the correct answer because it is the main cause of the high infant mortality rate. Necrotizing enterocolitis is a condition that causes inflammation and death of the intestinal tissue of the newborn, leading to infection, perforation, or sepsis. It can cause symptoms such as abdominal distension, bloody stools, or shock. It is more common in premature or low birth weight infants and accounts for about 10% of all neonatal deaths.
Choice C: Viral infections are not the correct answer because they are not the main cause of the high infant mortality rate. Viral infections are diseases that are caused by viruses that invade the cells of the newborn, such as respiratory syncytial virus (RSV), cytomegalovirus (CMV), or herpes simplex virus (HSV). They can cause symptoms such as fever, cough, rash, or blisters. However, they account for only about 2% of all infant deaths in the United States.
Choice D: Prematurity is the correct answer because it is the main cause of the high infant mortality rate. Prematurity is a condition that occurs when a baby is born before 37 weeks of gestation, which is considered full-term. Premature babies are at risk of developing various complications such as respiratory distress syndrome, intraventricular hemorrhage, or retinopathy of prematurity. Prematurity accounts for about 35% of all infant deaths in the United States.
Choice E: Sudden infant death syndrome is the correct answer because it is the main cause of the high infant mortality rate. Sudden infant death syndrome is a condition that causes the unexpected and unexplained death of an apparently healthy baby during sleep. The exact cause of sudden infant death syndrome is unknown, but some risk factors include sleeping on the stomach, overheating, smoking exposure, or soft bedding. Sudden infant death syndrome accounts for about 15% of all infant deaths in the United States.
Choice F: Low birth weight is the correct answer because it is the main cause of the high infant mortality rate. Low birth weight is a condition that occurs when a baby is born weighing less than 2,500 grams (5 pounds 8 ounces). Low birth weight babies are at risk of developing various complications such as hypothermia, hypoglycemia, or jaundice. Low birth weight accounts for about 25% of all infant deaths in the United States.

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