The nurse is taking care of an adolescent with osteosarcoma. The parents ask the nurse about treatment. The nurse should make which accurate response about treatment for osteosarcoma?

A. Aplastic crisis is caused by a decrease in the production of red blood cells in the bone marrow is correct. Aplastic crisis is often triggered by an infection (such as parvovirus B19), leading to a sudden reduction in red blood cell production, which can exacerbate anemia.

B. Sequestration crisis involves the blockage of small blood vessels by sickled red blood cells is incorrect. This describes a vaso-occlusive crisis, not sequestration crisis. Sequestration crisis involves pooling of blood in the spleen or liver, leading to organ enlargement and circulatory collapse.

C. Vaso-occlusive crisis is characterized by the pooling of large amounts of blood in the spleen and liver is incorrect. Vaso-occlusive crisis is characterized by the blockage of small blood vessels by sickled cells, leading to pain, ischemia, and tissue damage.

D. Aplastic crisis is characterized by the pooling of large amounts of blood in the spleen and liver is incorrect. Aplastic crisis is primarily related to bone marrow failure and reduced red blood cell production, not blood pooling in organs.

E. Sequestration crisis is characterized by the pooling of large amounts of blood in the spleen and liver is correct. In sequestration crisis, the spleen and liver trap large amounts of blood, which can lead to hypovolemic shock and severe anemia.

F. Vaso-occlusive crisis involves the blockage of small blood vessels by sickled red blood cells is correct. Vaso-occlusive crisis occurs when sickled red blood cells obstruct blood flow in small vessels, causing pain, tissue damage, and potential organ dysfunction.

A. Placing the client in a semi-Fowler's position is appropriate to help alleviate pressure on the brain and improve comfort. This position can also help with respiratory function, which may be compromised in meningitis.

B. Admitting the client to a private room is necessary to prevent the spread of the infection to other patients. Bacterial meningitis is highly contagious, and isolation is important to limit exposure.

C. Implementing seizure precautions is essential in managing a child with bacterial meningitis because the infection can cause increased intracranial pressure, which may lead to seizures.

D. Measuring head circumference every shift is unnecessary for this child, as it is typically done for infants to monitor for signs of hydrocephalus or increased intracranial pressure. In a 6-year-old child, clinical signs and imaging studies are more reliable for monitoring ICP.