Patients with episodes of atrial fibrillation (AF) lasting less than 24 hours are significantly more likely to be free from recurrent AF after catheter ablation than patients with preablation AF that ...

PND usually occurs several hours after a person falls asleep and improves when they sit upright. This difficulty in breathing can cause a person to wake up gasping for air. It can be a distressing ...

Paroxysmal nocturnal hemoglobinuria (PNH) is a rare and lethal disorder of the blood in which the body attacks and destroys red blood cells in massive amounts. This focus collection and short ...