[The pulmonary venous flow dynamics of before and after surgical repair in left-to-right shunt diseases--measured by the intraoperative transesophageal new-design Doppler echo-probe].
Transesophageal Doppler Echocardiography (TEE) was performed to evaluate the flow patterns of the pulmonary vein before and after cardiac surgery in 33 patients with left-to-right (L-R) shunt diseases. In all cases, the diagnosis was confirmed by cardiac catheterization and they were classified into 2 groups; Group I: right ventricular overloading group and Group II: left ventricular overloading group. 1. In Group II, the total pulmonary venous flow index (IS + ID- IA) measured preoperatively by TEE correlated significantly with the Qp/Qs (r = 0.86, p < 0.001) but it was insignificant in Group I. 2. Likewise, the peak pulmonary venous systolic forward flow velocity (pS) in Group II correlated significantly with the Pp/Ps (r = 0.65, p < 0.01) but it was insignificant in Group I. 3. The change of pulmonary venous flow parameter due to disappearance of L-R shunt by surgical repair was saliently reflected in S wave. In the present study, the pediatric TEE (6.8 mm in external diameter, Bi-plane) is useful to evaluate the flow dynamics of the pulmonary vein in congenital heart diseases with L-R shunt, and this technique proved useful for pediatric cardiac surgery.
Tsuji
K
K
Second Department of Surgery, Okayama University Medical School, Japan.
D002675:Child, Preschool; D004374:Ductus Arteriosus, Patent / Q000503:physiopathology / Q000601:surgery*; D015150:Echocardiography, Doppler; D017548:Echocardiography, Transesophageal; D005260:Female; D006344:Heart Septal Defects, Atrial / Q000503:physiopathology / Q000601:surgery*; D006345:Heart Septal Defects, Ventricular / Q000503:physiopathology / Q000601:surgery*; D006439:Hemodynamics; D006801:Humans; D008297:Male; D011667:Pulmonary Veins / Q000503:physiopathology*; D016277:Ventricular Function, Left / Q000502:physiology