What is the correct sequence of induction for general anesthesia?

The correct sequence of induction for general anesthesia typically follows a specific progression to ensure patient safety and effectiveness in achieving the desired anesthetic state. The sequence generally includes the following steps:

1. Preoxygenation (1) - This is the initial step where the patient breathes in oxygen, usually delivered through a mask, to increase oxygen reserves and help maintain respiratory stability during the induction of anesthesia.

2. Induction agent administration (3) - After preoxygenation, the anesthesiologist administers an induction agent, which promotes rapid loss of consciousness. This can include medications such as propofol or thiopental.

3. Intubation (2) - Once the patient is unconscious, the next step is intubation, which involves placing an endotracheal tube to secure the airway and ensure that the patient can be ventilated properly.

4. Maintenance of anesthesia (4) - After intubation, anesthetic agents for maintenance—such as inhalational anesthetics—are administered to keep the patient unconscious and comfortable throughout the surgical procedure.

5. Monitoring and adjustments (5) - Continuous monitoring of the patient’s vital signs occurs during the maintenance phase, along with adjustments to anesthetic delivery to ensure