Goal-directed Hemodynamic Management and Kidney Injury After Radical Nephrectomy or Nephroureterectomy

Condition(s) studied

Investigational drug(s) / intervention(s)

Targeted hemodynamic management: During anesthesia, hemodynamic managements include active hydration (\>10 ml/kg/h), use of inotropes (dobutamine), and forced diuresis; the targets are to maintain pulse pressure variation \<9%, mean arterial pressure ≥85 mmHg, and urine output \>200 ml/h (3ml/kg/h). During the first 48 hours after surgery, systolic blood pressure is maintained ≥110 mmHg or within 20% of baseline by delaying antihypertensive resumption, providing fluid challenge, and/or vasoactive infusion.

Routine care: During anesthesia, hemodynamic managements are conducted according to routine practice and usually include fluid infusion at a rate of 6-8 ml/kg/h without inotropics; the targets are to maintain mean arterial pressure ≥60 mmHg and urine output \>0.5 ml/kg/h. During the first 48 hours after surgery, hemodynamic management is performed according to routine practice.

Study summary

Radical nephrectomy and nephroureterectomy are common operations for the treatment of renal cell carcinoma and upper tract urothelial carcinoma, respectively. However, acute kidney injury frequently occurs after surgery. And the occurrence of acute kidney injury is associated with an increased risk of chronic kidney disease. Intraoperative hypotension is identified as an important risk factor of postoperative acute kidney injury. Preliminary studies showed that goal-directed hemodynamic management may reduce kidney injury after surgery but requires further demonstration. We hypothesized that goal-directed hemodynamic management combining hydration, inotropes, and forced diuresis to maintain pulse pressure variation \<9%, mean arterial pressure ≥85 mmHg, and urine flow rate \>200 ml/h (3 ml/kg/h) may reduce the incidence of acute kidney injury and improve long-term renal outcome after radical nephrectomy or nephroureterectomy. The purpose of this study is to investigate the effect of goal-directed hemodynamic management on the occurrence of acute and persistent kidney injury in patients following radical nephrectomy and nephroureterectomy.

Eligibility

Primary outcome measure(s)

• Incidence of acute kidney injury (early primary outcome) — Up to 7 days after surgery
  Acute kidney injury is diagnosed and classified according to the Kidney Disease Improving Global Outcomes (KDIGO) criteria. Acute kidney injury of stage 1 or above is defined as occurrence of acute kidney injury.
• Time to new-onset or progression of chronic kidney disease (CKD) (long-term primary outcome). — Up to 2 years after surgery
  New-onset CKD is defined as a decrease of glomerular filtration rate to \<60 ml/min/1.73 m2 and persists for more than 3 months. Progression of CKD is defined as a decrease of glomerular filtration rate of 40% or more from baseline and persists for more than 3 months.

Trial sites (1)

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