Final answer:
The three C's and a D of Tracheal Esophageal Fistula are coughing, choking, drooling, and dyspnea, which are symptoms caused by an abnormal connection between the esophagus and trachea.
Step-by-step explanation:
The three C's and a D of Tracheal Esophageal Fistula (TEF) are coughing, choking, drooling, and dyspnea. These symptoms can occur because TEF creates an abnormal connection between the esophagus and the trachea, which allows contents from the esophagus to enter the respiratory tract, leading to coughing and choking during feeding. Drooling can be a sign of an inability to swallow saliva properly due to the fistula, and dyspnea, or shortness of breath, occurs as a result of aspiration or airway irritation.