ROLE OF RADIO-NUCLEAR ISOTOPIC SCANNING IN SURGICAL DECISION MAKING lN CASES OF C.H.D.WITH LEFT-RIGHT SHUNTS

Abstract

on-invasive assessment of already diagnosed left to right cardiac shunts for risk stratification of these patients preoperatively is one of the main targets of the cardiosurgeons (Wilson et at., 1990).

So, the aim of the present study is to compare the validity of cardiac catheterization, echocardiography and radionuclide studies in this risk stratification with comparison of these parameters with the intraoperative data. In addition, the current study aims to conclude a predictable parameters for the prognosis in cases with high pulmonary systolic artery pressure postoperative.

Fifty patients with left-to-right shunts had been subjected to the current study from June 1997-to- October 1999. They all had been subjected to echocardiography, radionuclide studies, cardiac catheterization and operative correction. Intraoperative assessment of oxymetry, pulmonary artery systolic pressure and pressure gradient assessment had been done.