Raul Pereiras

Learn More
Seventy-three patients with hepatic cirrhosis and bleeding gastroesophageal varices underwent transhepatic portal vein catheterization and variceal obliteration. Gastroesophageal varices were successfully obliterated in 32 patients actively bleeding and in 35 patients with stabilized bleeding gastroesophageal varices. The remaining six were technical(More)
Twelve patients with malignant obstruction of the biliary tree were treated by dilating the lesion percutaneously and inserting an internal large-bore teflon prosthesis in place bridging the the stricture. All 12 patients had unresectable neoplasms. The procedure was devised because existing modes of palliation using surgical techniques are associated with(More)
The experience of collecting 120 transhepatic portograms, performed in patients with different degrees of portal hypertension, affords the opportunity for discussing the anatomical and hemodynamic features of portosystemic communications. Multiple pathways of decompression were found. The coronary-gastroesophageal collateral formed pathways in 108 cases,(More)
Esophagographic evaluation of the fate of esophageal varices after distal splenorenal shunt was obtained. The radiologist-observer was blinded as to the surgical status of the films under study. The results indicate that varices are likely to persist after surgery. However, the sizes of the varices are clearly diminished following selective distal(More)
In order to evaluate whether segmental ejection fraction (SEF) is a better index of left ventricular (LV) performance than global ejection fraction (EF), 25 patients with significant coronary stenosis and normal EF were studied. SEF was estimated from the LV cineangiogram after dividing the LV into eight segments by means of a long axis and three equally(More)