A nurse is conducting a staff in-service on childhood cancers. Which is the primary site of osteosarcoma?
Humerus
Femur
Tibia
Pelvis
The Correct Answer is B
A. Humerus is incorrect because although osteosarcoma can occasionally affect the humerus, it is not the most common site. Upper extremity involvement is less frequent in pediatric patients.
B. Femur is correct because osteosarcoma most commonly arises in the metaphyseal region of long bones, particularly around the distal femur, which accounts for approximately 50% of cases. This site is prone to rapid bone growth, which is associated with tumor development.
C. Tibia is incorrect because while the tibia is a site for osteosarcoma, it is the second most common site, after the femur. Incidence in the tibia is lower compared to the distal femur.
D. Pelvis is incorrect because osteosarcoma rarely originates in flat bones such as the pelvis in children. Pelvic involvement is uncommon and usually occurs in older adolescents or adults.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. A primiparous patient who delivered a 7-pound 10-ounce baby 24 hours ago is at lower risk because primiparous patients generally have a lower risk of postpartum hemorrhage, and moderate birth weight babies rarely cause excessive uterine stretching. The 24-hour postpartum period also allows for initial uterine contraction.
B. A multiparous patient who delivered a 9-pound baby 4 hours ago is correct because multiparity and macrosomia (large baby) increase the risk of uterine atony, which is the leading cause of postpartum hemorrhage. The patient is also in the early postpartum period (first 24 hours), which is when most hemorrhages occur, making this patient the highest risk.
C. A primiparous patient who delivered a late preterm baby 24 hours ago is lower risk because smaller birth weight and primiparity reduce the risk of excessive uterine stretching and atony.
D. A multiparous patient who delivered a 7-pound baby 6 hours ago is at some risk due to multiparity, but the smaller baby size reduces the likelihood of uterine atony compared with a 9-pound infant.
Correct Answer is B
Explanation
A. Administering pain medications to relieve headache and muscle aches is important for comfort, but it is not the highest priority during the induction phase.
B. Monitoring for signs of infection due to neutropenia is correct because induction chemotherapy causes profound bone marrow suppression, leading to neutropenia. Neutropenia significantly increases the risk of infection, which can become life-threatening. Early detection of fever, chills, or other infection signs is critical for timely intervention, making infection prevention and monitoring the top priority during this phase.
C. Recommending home-schooling to minimize exposure to other children is supportive and helpful for infection prevention but is secondary to direct monitoring and management of neutropenia.
D. Encouraging a high-protein diet to promote growth is beneficial for overall health and recovery but is not the primary concern during the induction phase, when preventing infection is life-saving.
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