Certified Nurses Operating Room (CNOR) Practice Exam

What is the recommended action if a patient exhibits signs of toxicity from local anesthetics?

1. Administer oxygen

2. Administer antihistamines

3. Increase fluid infusion

4. Perform cardiopulmonary resuscitation

The correct answer is: Administer oxygen

Administering oxygen is the correct action when a patient exhibits signs of toxicity from local anesthetics due to the potential effects these substances can have on the central nervous system and cardiovascular system. Local anesthetic toxicity can lead to symptoms such as confusion, seizures, and even respiratory depression or cardiac arrest. Oxygen support is crucial because it helps maintain adequate oxygenation, especially if the patient's airway is compromised or if they are experiencing respiratory distress. This intervention can stabilize the patient's condition and buy time while additional treatment measures are implemented. Ensuring the patient has adequate oxygenation is a primary concern in any emergent situation, particularly when there are symptoms that could impair breathing or circulation. Other actions, while potentially relevant in a broader context, do not address the immediate risks associated with local anesthetic toxicity in the same direct manner. Administering antihistamines would not be appropriate as they are intended for allergic reactions rather than toxic effects. Increasing fluid infusion could be helpful in managing certain conditions, such as hypotension, but it does not directly counteract the effects of local anesthetic toxicity. Performing cardiopulmonary resuscitation might be necessary in severe cases, but the immediate first step would be to ensure adequate oxygenation. Thus, providing oxygen is the prudent