What immediate intervention is required for a female patient in respiratory distress after exposure to smoke?

In the case of a female patient experiencing respiratory distress after exposure to smoke, immediate intubation is a critical intervention. This procedure is necessary because smoke inhalation can lead to significant airway inflammation and swelling, which can obstruct the airway and severely compromise the patient's ability to breathe. Intubation allows for direct control of the airway and ensures that the patient can receive adequate ventilation and oxygenation.

The other options, while they may have their place in the management of respiratory distress, are not as immediately life-saving in this context. Oral steroids can help reduce inflammation but take time to exert their effects, and are not appropriate for immediate airway management. Oxygen therapy is essential for improving oxygenation but does not address potential airway obstruction or the immediate need for controlled ventilation that intubation provides. IV fluids may be necessary in a broader treatment plan but do not specifically address the acute airway concerns resulting from smoke inhalation. Thus, intubation is the most appropriate and immediate intervention in this scenario to ensure the patient's safety and stability.