袢利尿剂如速尿预防肾衰的价值尚有争论。提倡者认为,它增加肾脏血流、尤其是皮质外层的血流,降低肾血管阻力,有助于预防急性肾衰。同时,它还可解除‘液体超载’而使呼吸机能不全明显改善。反对者则怀疑速尿能改变这种病人的肾血流动力学或预防肾衰。速尿使大量液体丢失,导致处于边缘状态血容量的病人变成低血容量,而发生急性肾衰。 袢 diuretics such as furosemide to prevent the value of renal failure is still controversial. Advocates believe it increases renal blood flow, especially in the cortex, reducing renal vascular resistance and helping prevent acute renal failure. At the same time, it also relieves ’fluid overloading’ and significantly improves respiratory insufficiency. Opponents suspect that furosemide changes the patient’s hemodynamics or prevents kidney failure. Supraxia, a large number of fluid loss, resulting in marginal blood volume of patients into hypovolemia, acute renal failure occurs.