caa a22 4500 388115769 CHVBK 20180307125406.0 cr unu---uuuuu 161130e199901 xx s 000 0 eng 10.1017/S1047951100007344 doi S1047951100007344 pii (NATIONALLICENCE)cambridge-10.1017/S1047951100007344 Palliative balloon valvoplasty of the pulmonary valve in tetralogy of Fallot [Elektronische Daten] Balloon dilation of the pulmonary valve was performed in 54 patients with tetralogy of Fallot with severe cyanosis, high haematocrit and severe valvar pulmonary stenosis. Clinical, echocardiographic, angiographic, and haemodynamic data were analyzed before and after the procedure. After balloon dilation, the systemic oxygen saturation increased from a mean value of 66% to 85<%. The mean value of the haematocrit before dilation was 55 + 13, and decreased to 47 after dilation (p < 0.002) in 2 months follow-up. Balloon dilation increased the size of the pulmonary valvar orifice from a mean value of 9 + 5mm to 11.5 + 2mm (p < 0.005). The mean Z score of the pulmonary valves, which was -3 + 1.3 before dilation, increased to -1.1 + 1.1 immediately after the procedure (p < 0.05). The size of the right and left pulmonary arteries increased after dilation from 9mm to 10 mm, and from 8.7 + 2.4mm to 9.8 + 2.3mm, respectively (p <0.05). The comparable mean Z scores increased from -2.8 + 1.9 SD to -1.8 + 1.4 SD, and from -2.4 + 1.9 SD to -1.5 + 1.6 SD for the right and left branches, respectively (p < 0.05). In patients with stenosis at the bifurcation of the pulmonary trunk and hypoplasia of the left artery, successful dilation of the pulmonary valve lead to an increase of flow and improvement in size of the hypoplas-tic segment. In conclusion, initial balloon dilation of the pulmonary valve in tetralogy of Fallot resulted in increase of the Z score for the pulmonary valve and improved antegrade pulmonary blood flow, inducing growth of the pulmonary arteries and ameliorating the anatomic and physiologic preoperative condition. Copyright © Cambridge University Press 1999 Balloon valvoplasty nationallicence Pallet‘s tetralogy nationallicence cardiac catheterization nationallicence Massoud Ikram Department of Pediatric Cardiology, National Heart Institute, Imbaba, Giza, Egypt Imam Adel Department of Pediatric Cardiology, National Heart Institute, Imbaba, Giza, Egypt Mabrouk Ahmed Department of Pediatric Cardiology, National Heart Institute, Imbaba, Giza, Egypt Boutros Nader Department of Pediatric Cardiology, National Heart Institute, Imbaba, Giza, Egypt Kassem Ashraf Department of Pediatric Cardiology, National Heart Institute, Imbaba, Giza, Egypt Daouod Ahmed Department of Pediatric Cardiology, National Heart Institute, Imbaba, Giza, Egypt Abd Mahmoud Department of Pediatric Cardiology, National Heart Institute, Imbaba, Giza, Egypt Hakem El Department of Pediatric Cardiology, National Heart Institute, Imbaba, Giza, Egypt Cardiology in the Young Cambridge University Press 9/1(1999-01), 24-36 1047-9511 9:1<24 1999 9 CTY https://doi.org/10.1017/S1047951100007344 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1017/S1047951100007344 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Massoud Ikram Department of Pediatric Cardiology, National Heart Institute, Imbaba, Giza, Egypt NATIONALLICENCE 700 1- Imam Adel Department of Pediatric Cardiology, National Heart Institute, Imbaba, Giza, Egypt NATIONALLICENCE 700 1- Mabrouk Ahmed Department of Pediatric Cardiology, National Heart Institute, Imbaba, Giza, Egypt NATIONALLICENCE 700 1- Boutros Nader Department of Pediatric Cardiology, National Heart Institute, Imbaba, Giza, Egypt NATIONALLICENCE 700 1- Kassem Ashraf Department of Pediatric Cardiology, National Heart Institute, Imbaba, Giza, Egypt NATIONALLICENCE 700 1- Daouod Ahmed Department of Pediatric Cardiology, National Heart Institute, Imbaba, Giza, Egypt NATIONALLICENCE 700 1- Abd Mahmoud Department of Pediatric Cardiology, National Heart Institute, Imbaba, Giza, Egypt NATIONALLICENCE 700 1- Hakem El Department of Pediatric Cardiology, National Heart Institute, Imbaba, Giza, Egypt NATIONALLICENCE 773 0- Cardiology in the Young Cambridge University Press 9/1(1999-01), 24-36 1047-9511 9:1<24 1999 9 CTY CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge