Shortness of breath is a common reason people come to the ER. Learn how emergency doctors evaluate breathing trouble, rule out dangerous causes like blood clots and heart failure, and decide on the right tests and treatment.

Chest pain is one of the most common emergency room complaints. Learn how ER doctors evaluate chest pain, rule out life threatening conditions like heart attack and pulmonary embolism, and decide who needs further testing.

Pulmonary embolism occurs when a blood clot travels from the legs to the lungs and blocks blood flow. Learn the symptoms, risk factors, diagnostic tests, and how anticoagulation prevents dangerous complications.