This document discusses tracheoesophageal fistula (TEF), including its definition, development, epidemiology, anatomical variations, pathophysiology, clinical manifestations, diagnosis, management, and nursing care. TEF is a congenital abnormality where the trachea and esophagus are connected. It develops due to incomplete separation of the trachea and esophagus during embryonic development. Clinical signs include drooling, choking, respiratory distress, inability to feed, and aspiration pneumonia. Treatment involves surgical repair to separate the trachea and esophagus.