What is a pulmonary embolism? A pulmonary embolism (PE) is a blood clot that develops in a blood vessel in the body (often in the leg). It then travels to a lung artery where it suddenly blocks blood flow.
Once a brain aneurysm bleeds, or ruptures, it requires immediate medical care in a medical center designed to handle emergencies. If you think you are experiencing a ruptured brain aneurysm, dial 911 immediately.
When blood glucose levels fall below 70 mg/dl while sleeping at night, the person experiences a condition called nocturnal hypoglycemia. Studies suggest that almost half of all episodes of low blood glucose — and more than half of all severe episodes — occur at night during sleep.