Gabriel STEFAN, Liliana GARNEATA, Dorina TACU, Cristina BUCSA, Ioanel SINESCU and Gabriel MIRCESCU

ABSTRACT

Introduction: According to the Romanian Renal Registry (RRR), only 8% of patients on renal replacement therapy (RRT) in 2012 received a kidney transplant (KTx). As not all transplant centers report to RRR, the outcome of transplanted patients in Romania is not known. Therefore, we aimed to evaluate the outcome in patients grafted in one of the largest transplant center in the country as compared to hemodialysis (HD) and peritoneal dialysis (PD) patients recorded by the RRR.

Method: In an intention-to-treat analysis using Kaplan-Meier and Cox proportional hazard (CPH) models, survival was compared between 8050 incident HD, 1000 PD and 490 KTx patients treated between 2008 and 2011. The patients were stratified by modality at day 90 of therapy.

Results: As compared to HD and PD patients, the KTx recipients were younger, more often of male gender, and had glomerulonephritis as primary renal disease (PRD) more frequently.

KTx patients had a higher mean survival time (57.68 [56.95-58.42] months) than HD (45.55 [45.04-46.06] months) or PD patients (46.33 [45.01-47.65] months). In the multivariate CPH model, higher age (OR=1.03 (1.02-1.03), p<0.01) at RRT initiation, HD (OR=5.60 (3.16-9.94), p<0.01) and PD (OR=5.62 (3.14-10.08), p<0.01) as RRT and diabetic nephropathy (p<0.01) as PRD were associated with a poorer survival.

Conclusion: The present study is the first to provide representative information about the outcome of the KTx patients in Romania. We found that patient survival after KTx is markedly better than either HD or PD. Urgent implementation of a KTx registry is needed in order to improve the national transplantation program.

Keywords: kidney transplantation, hemodialysis, peritoneal dialysis, survival

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Iuliana ANDREIANA, Simona STANCU, Andreea AVRAM, Ludmila TARAN and Gabriel MIRCESCU

ABSTRACT

Objectives: We aimed to evaluate the prevalence of lung hemorrhage, its determinants and its prognostic significance in adults patients with severe kidney involvement due to ANCA-associated vasculitis diagnosed and treated in a nephrology department.

Material and Methods: Seventy-five patients consecutively diagnosed by kidney biopsy with crescentic pauci-immune glomerulonephritis entered this cohort study and were grouped according to the presence of diffuse alveolar hemorrhage (DAH – diagnosed as diffuse alveolar pattern on chest radiographs and anemia without evidence of another external bleeding). ANCAs were assessed by capture PR3-ANCA and MPO–ANCA ELISA or by indirect immunofluorescence.

Outcomes: Patients were followed for a median period of 38 (11.7; 65.8) months. The median age was 61.6 years. Median creatinine was 5.7 mg/dL and 17% of the patients needed temporary dialysis. Most of the patients (76%) had MPO-ANCA; 31% had pneumo-renal syndrome. DAH patients had more severe and active kidney disease, as reflected by higher serum creatinine (7.1 mg/dL vs 4.45 mg/dL; p=0.006) and higher hematuria (610/mm3 vs 230/mm3, p=0.003). The risk of DAH was not influenced by gender, age or ANCA specificity, but by smoking (smokers had a 4 (95%CI 1.18-14.2; p=0.002) times higher the risk of lung hemorrhage) and by season (patients diagnosed in winter and autumn had a 6 (95% CI 1.6-20.9; p=0.005) times higher the risk of lung hemorrhage). The proportion of responders and of patients with relapses, and time to maintenance dialysis or to death were similar irrespective to the occurrence of DAH at presentation.

Conclusions: In patients with ANCA associated pauci-immune glomerulonephritis, cold season, smoking and active kidney disease, but not ANCA specificity or inflammation were associated with lung hemorrhage. Although diffuse alveolar hemorrhage was the main cause of death, it was not related
to short- or long-term outcome.

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