Nokea
Laboratory confirmation of the diagnosis in Question 1 can best be obtained by measuring the toxic compound's concentration in which of the following?
- A. Urine
- B. Blood
- C. Hair
- D. Saliva
Correct Answer: A
Rationale: Mercury levels are most accurately measured in urine, especially in cases of chronic exposure.
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Which describes marasmus?
- A. Deficiency of protein with an adequate supply of calories
- B. Not confined to geographic areas where food supplies are inadequate
- C. Syndrome that results solely from vitamin deficiencies
- D. Characterized by thin, wasted extremities and a prominent abdomen resulting from edema (ascites)
Correct Answer: D
Rationale: Marasmus is a form of severe malnutrition characterized by a deficiency of both calories and protein in the diet. It typically occurs in young children and is often associated with a lack of adequate food intake. The classic presentation of marasmus includes extreme wasting of muscle and fat tissues, resulting in a gaunt appearance with thin limbs and a distended abdomen due to diminished muscle and subcutaneous fat. This differentiates it from kwashiorkor, another form of severe acute malnutrition characterized by edema and a protruding belly but with retained muscle mass. Therefore, option D, characterized by thin, wasted extremities and a prominent abdomen resulting from edema (ascites), accurately describes marasmus.
The nurse is caring for a newborn receiving an exchange transfusion for hemolytic disease. Assessment of the newborn reveals slight respiratory distress and tachycardia. Which should the nurse's first action be?
- A. Notify practitioner.
- B. Stop the transfusion.
- C. Administer calcium gluconate.
- D. Monitor vital signs electronically.
Correct Answer: B
Rationale: Slight respiratory distress and tachycardia in a newborn during an exchange transfusion may indicate a possible transfusion reaction or overload. The first action the nurse should take is to stop the transfusion to prevent any further complications and assess the newborn's condition. After stopping the transfusion, the nurse can then take appropriate steps such as notifying the practitioner, administering medications, or providing supportive care as needed.
A 10-mo-old boy has a left suprarenal mass. Surgery is accomplished with complete removal of the mass as well as the non-adherent lymph nodes; surgical biopsies are taken during surgery. The histology reveals poorly differentiated neuroblastoma with microscopic ipsilateral lymph nodes involvement. The contralateral lymph nodes are negative. Of the following, the BEST therapeutic approach for this infant is
- A. chemotherapy
- B. radiotherapy
- C. concomitant chemo-radiotherapy
- D. chemotherapy followed by radiotherapy
Correct Answer: A
Rationale: Complete resection with microscopic residual disease typically warrants adjuvant chemotherapy.
The parents of a 4-month-old infant tell the nurse that they are getting a microwave oven and will be able to heat the baby's formula faster. What should the nurse recommend?
- A. Never heat a bottle in a microwave oven.
- B. Heat only 10 ounces or more.
- C. Always leave bottle top uncovered to allow heat to escape.
- D. Shake bottle vigorously for at least 30 seconds after heating.
Correct Answer: A
Rationale: The nurse should recommend never heating a bottle in a microwave oven. Microwaves do not heat liquids evenly, and there is a risk of creating hot spots in the formula, which can burn the baby's mouth and throat. It is safer to heat the formula by placing the bottle in warm water or using a bottle warmer to ensure uniform heating throughout.
A medical student observes that infants cry in response to another infant's cry. The MOST appropriate answer is that it represents
- A. an early sign of empathy development
- B. a sign of good hearing
- C. a startle reflex
- D. an early sign of fear development
Correct Answer: A
Rationale: Infants crying in response to others may indicate early empathy development.