What should you do if a person has a nosebleed that lasts longer than 15 minutes?

When a nosebleed lasts longer than 15 minutes, it indicates that there may be a more serious underlying issue or the bleeding is not stopping on its own. In such cases, it is crucial to seek professional medical help. Calling EMS ensures that trained medical personnel can assess the situation and provide necessary interventions to control the bleeding and address any potential complications.

Pinching the nostrils for 5 minutes might be an effective initial measure for a short-lived nosebleed, but it is inadequate if the bleeding persists beyond that time frame. Laying the person down flat can potentially worsen the situation, as it may encourage blood flow back toward the throat, complicating breathing. Applying ice may provide temporary relief but is not a substitute for professional medical evaluation when bleeding is extensive or prolonged.

Thus, reaching out for emergency medical services is the appropriate course of action in this situation.