Childhood vasculitis encompasses a broad spectrum of diseases that share inflammation of blood vessels. The disease that affects predominantly large blood vessels is

Correct Answer: D

Rationale: Takayasu arteritis primarily affects large arteries.

Correct Answer: B

Rationale: High leukocyte count (>50,000) at diagnosis indicates aggressive disease and poor prognosis. Other poor prognostic factors include CNS involvement and very young or old age at diagnosis.

Correct Answer: C

Rationale: Omalizumab should be discontinued if no improvement is seen within 4-6 weeks.

Correct Answer: B

Rationale: For effective defibrillation, the paddles should be placed at the apex and right infraclavicular area, ensuring optimal current flow through the heart to terminate life-threatening arrhythmias.

Correct Answer: C

Rationale: The correct nursing intervention to prevent infection in patients with AIDS is to wear protective gear such as gown, mask, gloves, and goggles when entering the patient's room. Patients with AIDS have compromised immune systems, making them more susceptible to infections. Wearing protective gear helps prevent the transmission of pathogens from healthcare providers to the patient and vice versa. It helps minimize the risk of exposure to infectious agents and protects both the patient and the healthcare team. Prohibiting visitors with a cough (option B) may be important for preventing the spread of certain infections, but it is not the most effective measure for protecting patients with AIDS. Option A is not appropriate as it isolates the patient, which can have negative psychological effects. Option D is not specific enough and does not provide clear guidance on infection prevention measures.