Nursing management incommon childhood diseases.Respiratory system: Tracheoesophageal Fistula (TEF) Definition: Tracheoesophageal fistula (TEF) is a congenital abnormality characterized by an abnormal connection (fistula) between the trachea (windpipe) and the esophagus (food pipe). This condition leads to difficulty in swallowing, choking, and aspiration of food or fluids into the lungs, leading to respiratory distress. Etiology (Causes): The exact cause of TEF is not well understood, but it is believed to result