The automated external defibrillator (AED) is a computerized medical device. An AED can check a personâs heart rhythm. It can recognize a rhythm that requires a shock. And it can advise the rescuer when a shock is needed. The AED uses voice prompts, lights and text messages to tell the rescuer the steps to take.
Nosebleeds occur due to burst or broken blood vessels in the nose. Having a headache and a nosebleed can be a sign of a minor issue, such as hay fever, or something more severe, such as anemia, or... Read more. Hay fever, excessive use of nasal sprays, and sinus infections are common causes of headaches and nosebleeds.
When You're Losing Too Much Blood. Too much blood loss can make a bloody nose an emergency. Medical professionals will often say that 5 milliliters of blood look like 30! It's true, if you're judging by the amount of blood on your shirt, it may look like you need a transfusion when you've really lost no more than a few tablespoons. If you're gushing blood, however, you need to call 911.