Early start hemodialysis with a catheter may be associated with greater mortality: A propensity score analysis.

INTRODUCTION: Deciding when and how to initiate hemodialysis (HD) is still controversial. An early start (ES) seems to show a lack of benefit. "Lead time bias" and comorbidities have been associated with different outcomes in ES groups. On the other hand, it is well accepted that the impact the type of vascular access (VA) has on patient survival. Our aim was to evaluate survival with early start (ES) versus late start (LS) on HD, taking into account the vascular access (VA) used. METHODS: Between 01/1995 and 06/2018, 503 incidental patients initiated HD at our Dialysis Unit. eGFR was estimated by the CKD-EPI equation. Diabetes mellitus (DM), coronary disease (CD), and peripheral vascular disease (PVD) were considered comorbid conditions. According to eGFR and VA, patients were divided into four groups: G1: ES (eGFR > 7 mL/min) with catheter (ES + C), G2: ES with fistula or graft (F/G) (ES + F/G), G3: LS (eGFR< 7 mL/min) with catheter (LS + C), and G4: LS with F/G (LS + F/G). The cut-off value to define ES or LS was based on median eGFR for these 503 patients. We compared patient's survival rates by Kaplan-Meier and log-rank test. The four groups were compared before and after matching with propensity scores (PS). Cox analysis was performed to determine the impact of predictors of mortality. RESULTS: Median eGFR was 7 (5.3-9.5) mL/min/1.73 m2 , median follow-up time was 30.9 (13-50) months, 52.1% had F/G access at entry, and 46.9% died during the observation period. Among the four groups, the ES + C were significantly older, and there were more diabetics and comorbid conditions, while phosphatemia, iPTH, albumin, and hemoglobin were significantly higher in the LS groups. Before propensity score (PS) matching, the ES + C group had a poor survival rate (p < 0.0001), while LS + F/G access had the best survival. After PS, a total of 180 patients were selected in the same four groups and ES + C kept showing a statistically significant poorer survival. Multivariate analysis revealed that ES + C was an independent predictor of mortality. CONCLUSION: In this retrospective study, ES + C on HD was associated with a higher mortality rate than LS. This association persisted after PS matching.

Travel for transplantation and transplant commercialism in Argentina: a 4-decade experience from a University Hospital.

Travel for transplantation and transplant commercialism have become major issues in the last years, generating a passionate medical, legal, and ethical debate. We evaluated the general characteristics of patients who received a kidney transplant abroad and were subsequently followed in our institution. Then, we carried out a retrospective analysis of travelers' outcomes and compared them with a matched cohort of patients transplanted in our center. Between 1971 and 2008, 58 kidney transplants were performed outside Argentina and were subsequently followed up at our institution. The main destinations were the USA (32.8%), Bolivia (29.3%), and Brazil (17.2%). Deceased donor transplants were the most common (53.4%) followed by unrelated living donors (32.8%). No difference was observed between travelers and controls in terms of one-month and one-yr renal function and one-yr and five-yr graft survival. Travelers had significantly less time on dialysis before transplantation than controls. The major destination among all travelers was the USA, and the main destination for commercial transplants was Bolivia. The destination countries involved in our study and the apparent non-inferiority of travelers graft outcomes differ from those of previous reports.

[Gadodiamide and carbon dioxide as alternative contrast media in patients with chronic renal failure]. / Gadodiamida y anhídrido carbónico como contrastes angiográficos alternativos en pacientes con insuficiencia renal.

Twelve diagnostic and therapeutic angiograms were performed in 10 patients with chronic renal failure using gadodiamide and CO2 as vascular contrast. Renal function was evaluated with serum creatinine levels 24 hours before and 24 to 48 hours after the vascular procedure. Imaging quality and tolerance of these contrast agents were also studied. There was no significant increase in serum creatinine levels in the 12 procedures. In all cases but one, the combined use of gadodiamide and CO2 offered images of enough quality and definition for diagnosis and therapy. A good symptomatic tolerance was present in all procedures. Gadodiamide and CO2 seem to represent useful and safe contrast agents for angiography and endovascular intervention in patients with chronic renal failure. Further experience is needed to confirm these initial findings.

Gadodiamida y anhidrido carbonico como contrastes angiograficos alternativos en pacientes con insuficiencia renal / Gadodiamide and carbon dioxide as alternative contrast media in patients with chronic renal failure

Twelve diagnostic and therapeutic angiograms were performed in 10 patients with chronic renal failure using gadodiamide and CO2 as vascular contrast. Renal function was evaluated with serum creatinine levels 24 hours before and 24 to 48 hours after the vascular procedure. Imaging quality and tolerance of these contrast agents were also studied. There was no significant increase in serum creatinine levels in the 12 procedures. In all cases but one, the combined use of gadodiamide and CO2 offered images of enough quality and definition for diagnosis and therapy. A good symptomatic tolerance was present in all procedures. Gadodiamide and CO2 seem to represent useful and safe contrast agents for angiography and endovascular intervention in patients with chronic renal failure. Further experience is needed to confirm these initial findings.