Patient: The patient is a female and she has sudden onset of dyspnea at night when she is resting and has to sit up straight immediately, once a night. Is it a heart attack? The last hospital visit: This symptom is medically called nocturnal paroxysmal dyspnea. It is usually a manifestation of cardiac insufficiency, so it is important to check what heart disease is causing it, take a heart film and do an echocardiogram. Our hospital is the designated hospital for medical insurance in Chifeng, welcome to our hospital for examination and treatment.