Assessment of pulmonary arteries in patients with tetralogy of Fallot

Aim. The study aimed to evaluate the size of pulmonary arteries in patients with tetralogy of Fallot during preoperative and intraoperative stages and to find out the influence of preoperative sizes on the surgical management. Methods. Between January 2015 and May 2018, 50 patients with tetralogy of Fallot younger seven months underwent primary complete or palliative repair. The data obtained from patients' files and include echocardiography, computed tomography and surgical reports. Dimensions of right and left pulmonary arteries were analyzed by calculating the Z-score and Nakata indices. Results. Z-scores of the left and right pulmonary arteries were significantly smaller by echocardiography comparing to computed tomography (p