| Midterm Results of ePTFE Trileaflet
Dacron Graft Conduit for Reconstruction of Right Ventricular
Outflow Tract in Children |
(Department of Cardiovascular Surgery, Sakakibara
Heart Institue, Fuchu, Japan)
| Hiroki Hayashi |
Yukihiro Takahashi |
Makoto Ando |
| Masahito Yamashiro |
Keima Nagamachi |
Toshio Kikuchi |
| Hitoshi Kasegawa |
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Reconstruction of the right ventriclar
outflow tract (RVOT) in congenital heart disease often requires
implantation of a valved conduit. A hand-made expanded polytetrafluoroethylene
(ePTFE) trileaflet Dacron graft conduit has been used at our
center since 1997, and has been implanted in 31 patients. Midterm
results of this conduit were investigated in 30 of the patients
who have been followed at our outpatient clinic. There were 16
males and 14 females. The mean age and body weight were 16.4±7.2
(range, 3.4-33.4) years and 41.7±13.3 (range, 13.0-64.0) kg,
respectively. Diagnoses were tetralogy of Fallot with pulmonary
atresia in 14 patients, RVOT reconstruction associated with Ross
procedure in 8, transposition with pulmonary stenosis in 3, pulmonary
atresia with intact ventricular septum in 2, tetralogy with absent
pulmonary valve syndrome in 1, pulmonary regurgitation developed
after tetralogy repair in 1, and hemitruncus in 1. The median
size of the graft was 22 (range, 20-26) mm. All patients were
in NYHA functional class Ⅰ at the time of the latest follow-up.
The pressure gradient across the conduit was 11.0±5.8mmHg during
the same hospitalization and 13.8±6.5mmHg on the latest echocardiogram
(Interval, 2.4±1.5years, p＝0.85). The valve function was
well maintained in all patients, with the regurgitation graded
as non-trivial in 22 patients, mild in 7, and moderate in only
1. Midterm results of hand-made ePTFE trileaflet valved cunduit
was satisfactory. A longer follow-up is mandatory to assess its
actual durability.
Jpn. J. Cardiovasc. Surg. 34: 88-92 (2005) |
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