Emergency Medical Technician (EMT) Basic Certification Practice Exam

What should be avoided in a dissection of the thoracic aorta?

1. Aspirin

2. Oxygen therapy

3. Fluid resuscitation

4. Nitroglycerin

The correct answer is: Aspirin

In the context of a dissection of the thoracic aorta, the use of aspirin should be avoided because it can promote bleeding. Aortic dissection can lead to significant hemorrhage, so anticoagulants or antiplatelet agents like aspirin could exacerbate any bleeding that may occur during or after the dissection. The goal of treatment is typically to manage blood pressure and reduce stress on the aorta to prevent further tearing or bleeding. The other options have specific considerations but do not carry the same risk as aspirin in this scenario. Oxygen therapy is often beneficial, as it can improve tissue oxygenation, especially if the patient exhibits signs of distress. Fluid resuscitation may be necessary to manage blood pressure effectively, particularly if the patient shows signs of shock. Nitroglycerin can be used to reduce blood pressure and myocardial oxygen demand, although its use must be carefully monitored in this context, particularly with the potential for hypotension. Thus, avoiding aspirin is critical in managing the risk of further complications during a thoracic aorta dissection.