Should the Distal Splenorenal Shunt be Combined with Gastric Disconection and Transection?

Kanaya, So-i. and Katoh, H. (1995) Long-term evaluation of distal splenorenal shunt with splenopancreatic and gastie disconnection. Surgery; 118." 29-35. Background: This study was aimed at evaluating advantages of distal splenorenal shunt (DSRS) with splenopancreatic and gastric disconnection (DSRS-SPGD) over DSRS with splenopancreatic disconnection (DSRS-SPD) and standard DSRS (S-DSRS). Methods: DSRS-SPGD, DSRS-SPD, and S-DSRS were performed on 62, 7, and 55 patients, respectively, from 1970 to 1992. Comparison was performed in the following aspects: (1) long-term results in ratio of rebleeding, survival rate, and quality of life and (2) portal hemodynamics evaluated by preoperative and postoperative angiography. Portal blood flow was assessed by the ratio of the diameter of portal vein (PV) to superior mesenteric vein (SMV), and shunt selectivity was evaluated by selectivity grade. Results: Incidence of rebleeding was significantly lower in patients who underwent DSRS-SPGD than in those who underwent S-DSRS Oa<0.05). Grade 0 and I performance status was better in patients who underwent DSRS-SPGD. Accumulated survival ratio for 5 and 7 years was 78.3% and 70.5% in patients who underwent DSRS-SPGD, 59.7% and 44.1% in patients who underwent S-DSRS, and 75% and 75% in patients who underwent DSRS-SPD. Hemodynamic evaluation showed significantly lower PV/SMV ratio and degree of change in PV/SMV ratio of patients who underwent S-DSRS and DSRS-SPD. Many patients who underwent S-DSRS and DSRS-SPD exhibited loss of shunt selectivity at grades II and III. In contrast, patients who underwent DSRS-SPGD maintained satisfactory PV/SMV ratio and selectivity grade. Conclusions: DSRS-SPGD clearly showed advantages in decrease of rebleeding and improvement of quality of life resulting from maintenance of shunt selectivity and portal blood flow. (Surgery 1995; 118:29-35.) From the Second Department of Surgery, Hokkaido University School of Medicine, Sapporo, Japan