We evaluated 101 patients who underwent the Fontan operation between 2012 and 2018. Postoperative height, and BMI for age z-score reached the - 0, 87  1, 06 và - 0, 85 ± 1, 14 (SD), which were significantly better than preoperative values (the - 1, 28  1, 09 and-1, 76 ± 1, 61 (SD), p < 0, 05.