Final answer:
An EMT can administer aspirin upon medical control authorization, primarily for ischemic strokes due to its anticoagulant benefits. Stroke type determination and physician consultation are essential due to aspirin's potential side effects.
Step-by-step explanation:
An EMT may administer aspirin to a patient if authorization for medical control has been obtained. Aspirin is known for its anticoagulant properties, effectively inhibiting the aggregation of platelets, and is routinely administered during a heart attack or ischemic stroke to reduce adverse effects. However, in the case of an acute stroke, it is crucial to determine the type of stroke before administration as aspirin is contraindicated in hemorrhagic stroke.
Moreover, patients at increased risk for cardiovascular disease may be advised to take a low dose of aspirin preventively. Due to potential serious side effects, such as ulcers, patients should consult with a physician before beginning any aspirin regimen.