Introduction:
The Fontan procedure, currently, has been considered as the best choice for children with single ventricle physiology for separating the pulmonary and systemic circulations and establishing anear-normal systemic oxygen saturation (1). In the last decades, advances in surgical techniques and in postoperative patient careled to a decrease in postoperative mortality and morbidity (2,3). Prolonged intensive care unit (ICU) and lenght of hospital stays (LOHS) are frequently encountered. However, stil there is no consensus regarding the prevention and treatment of prolonged drainage. There have been several reported protocols to reduce prolonged pleural drainage and hospital stay (4-6). The use of a standardized treatment protocol could directly affect the length of hospital stay. However, the data on this subject was insufficient. For this purpose, we wanted to contribute to the literature by revealing the results of the modified Wisconsin protocol that we started to use in our clinic at July 2018. Our primary aim was to determine the effect of the protocol on the duration of drainage and hospital stay. Our secondary aim was to determine parameters affecting prolonged drainage after the Fontan procedure.