American journal of kidney diseases : the official journal of the National Kidney Foundation · 2016
Changes in Kidney Function After Transjugular Intrahepatic Portosystemic Shunts Versus Large-Volume Paracentesis in Cirrhosis: A Matched Cohort Analysis.
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Allegretti Andrew S, Ortiz Guillermo, Cui Jie, Wenger Julia, Bhan Ishir, Chung Raymond T, Thadhani Ravi I, Irani Zubin
Аннотация
BACKGROUND: Patients with cirrhosis and refractory ascites have physiologic and hormonal dysregulation that contributes to decreased kidney function. Placement of a transjugular intrahepatic portosystemic shunt (TIPS) can reverse these changes and potentially improve kidney function. We sought to evaluate change in estimated glomerular filtration rate (eGFR) following TIPS placement.
STUDY DESIGN: Retrospective, matched cohort analysis.
SETTINGS & PARTICIPANTS: Patients who underwent first-time TIPS placement for refractory ascites in 1995 to 2014. Frequency matching was used to generate a comparator group of patients with cirrhosis and ascites treated with serial large-volume paracentesis (LVP) in a 1:1 fashion.
PREDICTOR: TIPS placement compared to serial LVP.
OUTCOME: Change in eGFR over 90 days' follow-up.
MEASUREMENTS: Multivariable regression stratified by baseline eGFR<60 versus ≥60mL/min/1.73m(2); analysis of effect modification between TIPS placement and baseline eGFR.
RESULTS: 276 participants (TIPS, n=138; serial LVP, n=138) were analyzed. After 90 days, eGFRs increased significantly after TIPS placement in participants with baseline eGFRs<60mL/min/1.73m(2) compared to treatment with serial LVP (21 [95% CI, 13-29] mL/min/1.73m(2); P<0.001) and was no different in those with eGFRs≥60mL/min/1.73m(2) (1 [95% CI, -9 to 12] mL/min/1.73m(2); P=0.8). There was significant effect modification between TIPS status and baseline eGFR (P=0.001) in a model that included all participants.
LIMITATIONS: Outcomes restricted by clinically recorded data; clinically important differences may still exist between the TIPS and LVP cohorts despite good statistical matching.
CONCLUSIONS: TIPS placement was associated with significant improvement in kidney function. This was most prominent in participants with baseline eGFRs<60mL/min/1.73m(2). Prospective studies of TIPS use in populations with eGFRs<60mL/min/1.73m(2) are needed to evaluate these findings.
STUDY DESIGN: Retrospective, matched cohort analysis.
SETTINGS & PARTICIPANTS: Patients who underwent first-time TIPS placement for refractory ascites in 1995 to 2014. Frequency matching was used to generate a comparator group of patients with cirrhosis and ascites treated with serial large-volume paracentesis (LVP) in a 1:1 fashion.
PREDICTOR: TIPS placement compared to serial LVP.
OUTCOME: Change in eGFR over 90 days' follow-up.
MEASUREMENTS: Multivariable regression stratified by baseline eGFR<60 versus ≥60mL/min/1.73m(2); analysis of effect modification between TIPS placement and baseline eGFR.
RESULTS: 276 participants (TIPS, n=138; serial LVP, n=138) were analyzed. After 90 days, eGFRs increased significantly after TIPS placement in participants with baseline eGFRs<60mL/min/1.73m(2) compared to treatment with serial LVP (21 [95% CI, 13-29] mL/min/1.73m(2); P<0.001) and was no different in those with eGFRs≥60mL/min/1.73m(2) (1 [95% CI, -9 to 12] mL/min/1.73m(2); P=0.8). There was significant effect modification between TIPS status and baseline eGFR (P=0.001) in a model that included all participants.
LIMITATIONS: Outcomes restricted by clinically recorded data; clinically important differences may still exist between the TIPS and LVP cohorts despite good statistical matching.
CONCLUSIONS: TIPS placement was associated with significant improvement in kidney function. This was most prominent in participants with baseline eGFRs<60mL/min/1.73m(2). Prospective studies of TIPS use in populations with eGFRs<60mL/min/1.73m(2) are needed to evaluate these findings.