A 6-year-old girl complains of recurrent attacks of headache over the past 6 months; she has a fear of having brain tumor in spite of normal clinical and radiological findings; she has an underlying depression disorder. Of the following, the MOST likely diagnosis is

Correct Answer: D

Rationale: Hypochondriasis involves excessive worry about having a serious illness despite evidence to the contrary, which fits the described case.

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: Asking about developmental milestones such as the age at which a child started walking without assistance is considered an important part of the child's past medical history. This information helps the nurse assess if the child is meeting typical developmental milestones for their age. It also provides valuable insight into the child's growth and development, aiding in early identification of any potential developmental delays or concerns. Therefore, in the context of interviewing the mother of a 3-year-old child, inquiring about such developmental milestones is relevant and important for the child's past history.

Correct Answer: C

Rationale: Immunotherapy is not effective for anaphylaxis to a wasp sting, as it is an acute, life-threatening reaction requiring immediate epinephrine.

Correct Answer: B

Rationale: The best indicator for extubation readiness is a low FiO2 (fraction of inspired oxygen) because it indicates the infant is maintaining adequate oxygenation with minimal support.