New percutaneous techniques for perforating the pulmonary valve in pulmonary atresia with intact ventricular septum.
We report new percutaneous techniques for perforating the pulmonary valve in pulmonary atresia with intact ventricular septum, in 3 newborns who had this birth defect. There was mild to moderate hypoplastic right ventricle, a patent infundibulum, and no coronary-cavitary communications. We succeeded in all cases, and no complications related to the procedure occurred. The new coaxial radiofrequency system was easy to handle, which simplified the procedure. Two patients required an additional source of pulmonary flow (Blalock-Taussig shunt) in the first week after catheterization. All patients had a satisfactory short-term clinical evolution and will undergo recatheterization within 1 year to define the next therapeutic strategy. We conclude that this technique may be safely and efficiently performed, especially when the new coaxial radiofrequency system is used, and it may become the initial treatment of choice in select neonates with pulmonary atresia and intact ventricular septum.
Pedra
C A
CA
Instituto Dante Pazzanese de Cardiologia, São Paulo, SP. vffontes@uol.com.br
de Sousa
L N
LN
Pedra
S R
SR
Ferreira
W P
WP
Braga
S L
SL
Esteves
C A
CA
Santana
M V
MV
Sousa
J E
JE
Fontes
V F
VF
D017115:Catheter Ablation / Q000379:methods*; D017809:Fatal Outcome; D005260:Female; D006346:Heart Septum / Q000473:pathology*; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D018633:Pulmonary Atresia / Q000601:surgery*; D011664:Pulmonary Valve / Q000601:surgery*