## **Core Concept**
Bronchospasm in an anesthetized patient is a life-threatening condition that requires immediate treatment. It is characterized by a sudden increase in airway resistance due to bronchial smooth muscle contraction. Management involves administering bronchodilators and ensuring adequate ventilation.

## **Why the Correct Answer is Right**
The correct answer, **D. Administer a bronchodilator (e.g., albuterol or salbutamol)**, is the first line of treatment for bronchospasm. Administering a bronchodilator helps to relax the bronchial smooth muscles, thereby reducing airway resistance and improving ventilation. **Albuterol (salbutamol)** is a short-acting β2-adrenergic receptor agonist (SABA) that acts rapidly to relieve bronchospasm.

## **Why Each Wrong Option is Incorrect**
* **Option A:** Administering a corticosteroid is not the immediate treatment for acute bronchospasm. Corticosteroids are used to reduce inflammation but have a delayed onset of action.
* **Option B:** Increasing the depth of anesthesia may help in some cases of bronchospasm, especially if the patient is not deeply anesthetized. However, it is not the first line of treatment and may not be effective in all cases.
* **Option C:** Administering a vasopressor is not relevant to the treatment of bronchospasm. Vasopressors are used to manage hypotension and have no direct effect on airway smooth muscle.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that during an episode of bronchospasm, it is crucial to **stop any irritating stimuli** (e.g., stop the surgical procedure if it's causing the issue), **deepen anesthesia** if necessary, and **administer a bronchodilator**. The classic presentation includes increased peak airway pressures and difficulty in ventilation.

## **Correct Answer:** D. Administer a bronchodilator (e.g., albuterol or salbutamol).