Dataset Information

Predictors of renal recovery in renal failure secondary to bilateral obstructive urolithiasis.

ABSTRACT:

Objectives

To identify factors predicting renal recovery in patients presenting with renal failure secondary to bilateral obstructing urolithiasis.

Patients and methods

Data from electronic records of consecutive adult patients presenting with bilateral obstructing urolithiasis between January 2007 and April 2011 were retrieved. Ultrasonography of the abdomen, and kidney, ureter, bladder (KUB study) X-ray or abdominal non-contrast computed tomography confirmed the diagnosis. Interventional radiologists placed bilateral nephrostomies. Definitive intervention was planned after reaching nadir creatinine. Renal recovery was defined as nadir creatinine of ?2 mg/dL.

Results

In all, 53 patients were assessed, 50 (94.3%) were male, and 18 (33.9%) were aged ?40 years. Renal recovery was achieved in 20 patients (37.7%). A symptom duration of ?25 days (P < 0.01), absence of hypertension (P = 0.018), maximum renal parenchymal thickness of >16.5 mm (P = 0.001), and haemoglobin >9.85 g/dL (P < 0.01) were significant on unadjusted analysis. Symptom duration of ?25 days alone remained significant after adjusted analysis. Symptom duration of ?25 days (hazard ratio (HR) 13.83, 95% confidence interval (CI) 4.52-42.26; P < 0.01), parenchymal thickness of ?16.5 mm (HR 5.91, 95% CI 1.94-17.99; P = 0.002), and absence of hypertension (HR 9.99, CI 95% 1.32-75.37; P = 0.026) were significantly related to time to nadir creatinine. Symptom duration of ?25 days (HR 17.44, 95% CI 2.48-122.79; P = 0.004) alone remained significant after adjusted analysis. A symptom duration of ?25 days (P = 0.007) was 22-times more likely to indicate renal recovery.

Conclusions

Shorter symptom duration (?25 days) is predictive of renal recovery in renal failure secondary to bilateral obstructive urolithiasis.

SUBMITTER: Rajadoss MP

PROVIDER: S-EPMC5122748 | biostudies-literature | 2016 Dec

REPOSITORIES: biostudies-literature

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Publications

Predictors of renal recovery in renal failure secondary to bilateral obstructive urolithiasis.

Rajadoss Muthukrishna P MP Berry Chandrasingh Jeyachandra CJ Rebekah Grace J GJ Moses Vinu V Keshava Shyamkumar N SN Jacob Kuruthukulangara S KS Kumar Santosh S Kekre Nitin N Devasia Antony A

Arab journal of urology 20160923 4

<h4>Objectives</h4>To identify factors predicting renal recovery in patients presenting with renal failure secondary to bilateral obstructing urolithiasis.<h4>Patients and methods</h4>Data from electronic records of consecutive adult patients presenting with bilateral obstructing urolithiasis between January 2007 and April 2011 were retrieved. Ultrasonography of the abdomen, and kidney, ureter, bladder (KUB study) X-ray or abdominal non-contrast computed tomography confirmed the diagnosis. Inter ...[more]

PMID: 27900216

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Project description:BackgroundAcute kidney injury (AKI) is the most common extra-pulmonary organ failure in acute respiratory distress syndrome (ARDS). Renal recovery after AKI is determined by several factors. The objective of this study was to determine the predictors of renal non-recovery in ARDS patients.MethodsA single center retrospective cohort study of patients with AKI after onset of ARDS. Patients with preexisting chronic kidney disease or intensive care unit stay < 24 h were excluded. AKI staging was defined according to the Kidney Disease Improving Global Outcomes (KDIGO) 2012 guidelines. Renal non-recovery was defined as death, dialysis dependence, serum creatinine ≥1.5 times the baseline, or urine output < 0.5 mL/kg/h more than 6 h.ResultsOf the 244 patients that met study criteria, 60 (24.6%) had stage I AKI, 66 (27%) had stage II AKI, and 118 (48.4%) had stage III AKI. Of those, 148 (60.7%) patients had renal non-recovery. On multivariable analysis, factors associated with renal non-recovery were a higher stage of AKI (odds ratio [OR] stage II 5.71, 95% confidence interval [CI] 2.17-14.98; OR stage III 45.85, 95% CI 16.27-129.2), delay in the onset of AKI (OR 1.12, 95% CI 1.03-1.21), history of malignancy (OR 4.02, 95% CI 1.59-10.15), septic shock (OR 3.2, 95% CI 1.52-6.76), and a higher tidal volume on day 1-3 of ARDS (OR 1.41, 95% CI 1.05-1.90). Subgroup analysis of survival at day 28 of ARDS also found that higher severity of AKI (OR stage II 8.17, 95% CI 0.84-79.91; OR stage III 111.67, 95% CI 12.69-982.91), delayed onset of AKI (OR 1.12, 95% CI 1.02-1.23), and active malignancy (OR 6.55, 95% CI 1.34-32.04) were significant predictors of renal non-recovery.ConclusionsA higher stage of AKI, delayed onset of AKI, a history of malignancy, septic shock, and a higher tidal volume on day 1-3 of ARDS predicted renal non-recovery in ARDS patients. Among survivors, a higher stage of AKI, delayed onset of AKI, and a history of malignancy were associated with renal non-recovery.

Project description:OBJECTIVE:Obstruction release from urolithiasis can be delayed with a lack of suggested time for preventing the deterioration of renal function. The objective of this study was to investigate the effect of obstruction duration, concomitant acute kidney injury (AKI) or acute pyelonephritis (APN) during the obstruction on the prognosis of renal function. DESIGN:Retrospective cohort study. SETTING AND PARTICIPANTS:1607 patients from a urolithiasis-related obstructive uropathy cohort, between January 2005 and December 2015. OUTCOME MEASURES:Estimated glomerular filtration rate (eGFR) decrease ≥30% and/or end-stage renal disease (ESRD), and eGFR decrease ≥50% and/or ESRD, according to obstruction duration, AKI and APN accompanied by obstructive uropathy. RESULTS:When the prognosis was divided by obstruction duration quartile, the longer the obstruction duration the higher the probability of eGFR reduction >50% (p=0.02). In patients with concomitant APN or severe AKI during hospitalisation with obstructive uropathy, an eGFR decrease of >30% and >50% occurred more frequently, compared with others (p<0.001). When we adjusted for sex, age, hypertension, diabetes mellitus, APN, AKI grades and obstruction release >7 days for multivariate analysis, we found that concomitant APN (HR 3.495, 95% CI 1.942 to 6.289, p<0.001), concomitant AKI (HR 3.284, 95% CI 1.354 to 7.965, p=0.009 for AKI stage II; HR 6.425, 95% CI 2.599 to 15.881, p<0.001 for AKI stage III) and an obstruction duration >7 days (HR 1.854, 95% CI 1.095 to 3.140, p=0.001) were independently associated with an eGFR decrease >50%. Tree analysis also showed that AKI grade 3, APN and an obstruction duration >7 days were the most important factors affecting renal outcome. CONCLUSIONS:In patients with urolithiasis-related obstructive uropathy, concomitant APN was strongly associated with deterioration of renal function after obstruction release. The elapsed time to release the obstruction also affected renal function.

Dataset Information

Predictors of renal recovery in renal failure secondary to bilateral obstructive urolithiasis.

Objectives

Patients and methods

Results

Conclusions

Publications

Predictors of renal recovery in renal failure secondary to bilateral obstructive urolithiasis.

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