摘要
AIM: To investigate the systemic hemodynamic effects of two surgical procedures largely employed for treatment of schistosomal portal hypertension. METHODS: Thirty-six patients undergoing elective surgical treatment of portal hypertension due to hepatosplenic mansonic schistosomiasis were prospectively evaluated. All patients were subjected to preoperative pulmonary artery catheterization; 17 were submitted to esophagogastric devascularization and splenectomy (EGDS) and 19 to distal splenorenal shunt (DSRS). The systemic hemodynamic assessment was repeated 4 d after the surgical procedure. RESULTS: Preoperative evaluation revealed (mean ± SD) an increased cardiac index (4.78 ± 1.13 L/min per m2),associated with a reduction in systemic vascular resistance index (1457 ± 380.7 dynes.s/cm5.m2). The mean pulmonary artery pressure (18 ± 5.1 mmHg) as well as the right atrial pressure (7.9 ± 2.5 mmHg) were increased,while the pulmonary vascular resistance index (133 ± 62 dynes.s/cm5.m2) was decreased. Four days after EGDS,a significant reduction in cardiac index (3.80 ± 0.4 L/min per m2,P < 0.001) and increase in systemic vascular resistance index (1901.4 ± 330.2 dynes.s/cm5. m2,P < 0.001) toward normal levels were observed. There was also a significant reduction in pulmonary artery pressure (12.65 ± 4.7 mmHg,P < 0.001) and no significant changes in the pulmonary vascular resistance index (141.6 ± 102.9 dynes.s/cm5.m2). Four days after DSRS,a non-significant increase in cardiac index (5.2 ± 0.76 L/min per m2) and systemic vascular resistance index (1389 ± 311 dynes.s/cm5.m2) was observed. There was also a non-significant increase in pulmonary artery pressure (19.84 ± 5.2 mmHg),right cardiac work index (1.38 ± 0.4 kg.m/m2) and right ventricular systolic work index (16.3 ± 6.3 g.m/m2),without significant changes in the pulmonary vascular resistance index (139.7 ± 67.8 dynes.s/cm5.m2). CONCLUSION: The hyperdynamic circulatory state observed in mansonic schistosomiasis was corrected by EGDS,but was maintained in patients who underwent DSRS. Similarly,the elevated mean pulmonary artery pressure was corrected after EGDS and maintained after DSRS. EGDS seems to be the most physiologic surgery for patients with schistosomal portal hypertension.
AIM： To investigate the systemic hemodynamic effects of two surgical procedures largely employed for treatment of schistosomal portal hypertension.
METHODS： Thirty-six patients undergoing elective surgical treatment of portal hypertension due to hepatosplenic mansonic schistosomiasis were prospectively evaluated. All patients were subjected to preoperative pulmonary artery catheterization; 17 were submitted to esophagogastric devascularization and splenectomy （EGDS） and 19 to distal splenorenal shunt （DSRS）. The systemic hemodynamic assessment was repeated 4 d after the surgical procedure.
RESULTS： Preoperative evaluation revealed （mean ± SD） an increased cardiac index （4.78 ± 1.13 L/min per m^2）, associated with a reduction in systemic vascular resistance index （1457 ± 380.7 dynes.s/cm^5.m^2）. The mean pulmonary artery pressure （18 ± 5.1 mmHg） as well as the right atrial pressure （7.9 ± 2.5 mmHg） were increased, while the pulmonary vascular resistance index （133 ± 62 dynes.s/cm^5.m^2） was decreased. Four days after EGDS, a significant reduction in cardiac index （3.80 ± 0.4 L/min per m^2, P 〈 0.001） and increase in systemic vascular resistance index （1901.4 ± 330.2 dynes.s/cm^5. m^2, P 〈 0.001） toward normal levels were observed. There was also a significant reduction in pulmonary artery pressure （12.65 ± 4.7 mmHg, P 〈 0.001） and no significant changes in the pulmonary vascular resistance index （141.6 ±102.9 dynes.s/cm^5.m^2）. Four days after DSRS, a non-significant increase in cardiac index （5.2 ± 0.76 L/min per m^2） and systemic vascular resistance index （1389 ± 311 dynes.s/cm^5.m^2） was observed. There was also a non-significant increase in pulmonary artery pressure （19.84 ± 5.2 mmHg）, right cardiac work index （1.38 ± 0.4 kg.m/m^2） and right ventricular systolic work index （16.3 ± 6.3 g.m/m^2）, without significant changes in the pulmonary vascular resistance index （139.7 ± 67.8 dynes.s/cm^5.m^2）.
CONCLUSION： The hyperdynamic circulatory state observed in mansonic schistosomiasis was corrected by EGDS, but was maintained in patients who underwent DSRS. Similarly, the elevated mean pulmonary artery pressure was corrected after EGDS and maintained after DSRS. EGDS seems to be the most physiologic surgery for patients with schistosomal portal hypertension.
关键词
肺动脉高压
血液循环
脾切除术
高血压
心肌病
Pulmonary Hypertension
Hyperdynamic circulation
Portal Hypertension
Splenectomy
Cardiomyopathy
