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. 2024 Apr-Jun;46(2):e20230062.
doi: 10.1590/2175-8239-JBN-2023-0062en.

Brazilian Dialysis Survey 2022

[Article in English, Portuguese]
Fabiana Baggio Nerbass  1 , Helbert do Nascimento Lima  2 , José Andrade Moura-Neto  3 , Jocemir Ronaldo Lugon  4 , Ricardo Sesso  5
Affiliations

Brazilian Dialysis Survey 2022

[Article in English, Portuguese]
Fabiana Baggio Nerbass et al. J Bras Nefrol. 2024 Apr-Jun.

Abstract
in English, Portuguese

Introduction: The Brazilian Dialysis Survey (BDS) is an annual national survey about patients on chronic dialysis that contributes to health policies.

Objective: To report the 2022 epidemiological data from the BDS of the Brazilian Society of Nephrology (BSN).

Methods: A survey was carried out in Brazilian chronic dialysis centers using an online questionnaire that included clinical and epidemiological aspects of patients on chronic dialysis, dialysis therapy data, and dialysis center characteristics.

Results: Overall, 28% (n = 243) of the centers answered the questionnaire. In July 2022, the estimated total number of patients on dialysis was 153,831. The estimated prevalence and incidence rates of patients per million population (pmp) were 758 and 214, respectively. Of the prevalent patients, 95.3% were on hemodialysis (HD, 4.6% of these on hemodiafiltration) and 4.7% on peritoneal dialysis (PD). Only 1.3% of patients were not vaccinated against COVID-19. The prevalence of anemia (Hb < 10g/dL) was 27% and hyperphosphatemia (P > 5.5mg/dL) reached 30%. The estimated overall crude annual mortality rate was 17.1%.

Conclusions: The absolute number and prevalence rate of patients on chronic dialysis continue to increase. A growing number of patients were receiving hemodiafiltration. The mortality rate decreased, probably due to the end of COVID-19 pandemic. The conclusions were drawn in the context of relatively low voluntary participation, which imposed methodological limitations on our estimates.

Introdução:: O Censo Brasileiro de Diálise (CBD) é uma pesquisa nacional anual sobre pacientes em diálise crônica que contribui para as políticas de saúde.

Objetivo:: Informar os dados epidemiológicos de 2022 do CBD da Sociedade Brasileira de Nefrologia (SBN).

Métodos:: Foi realizada uma pesquisa em centros brasileiros de diálise por meio de um questionário online que incluiu aspectos clínicos e epidemiológicos de pacientes em diálise crônica, dados da terapia dialítica e características do centro de diálise.

Resultados:: No total, 28% (n = 243) dos centros de diálise ativos cadastrados na SBN responderam ao questionário. Em julho de 2022, o número total estimado de pacientes em diálise era de 153.831. As taxas estimadas de prevalência e incidência de pacientes por milhão (ppm) de habitantes foram 758 e 214, respectivamente. Dos pacientes prevalentes, 95,3% estavam em hemodiálise (HD; 4,6% desses em hemodiafiltração) e 4,7% em diálise peritoneal (DP). Apenas 1,3% dos pacientes não foram vacinados contra a COVID-19. A prevalência de anemia (Hb < 10g/dL) foi de 27% e de hiperfosfatemia (P > 5,5mg/dL) alcançou 30%. A taxa bruta total anual de mortalidade estimada foi de 17,1%.

Conclusões:: O número absoluto e a taxa de prevalência de pacientes em diálise crônica continuam a aumentar. Um número crescente de pacientes estava em hemodiafiltração. A taxa de mortalidade diminuiu, provavelmente devido ao fim da pandemia da COVID-19. As conclusões foram de um contexto de participação voluntária relativamente baixa, o que impõe limitações metodológicas às nossas estimativas.

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Conflict of interest statement

Conflict of Interest The authors declare no conflict of interest.

Figures

Figure 1
Figure 1. Estimated number of patients on chronic dialysis per year.
Figure 2
Figure 2. Estimated prevalence rate of patients on dialysis by geographic region in Brazil, per million population.
Figure 3
Figure 3. Estimated annual crude mortality rate of dialysis patients.
Figure 4
Figure 4. Distribution of dialysis patients according to chronic kidney disease etiology.
Figure 5
Figure 5. Prevalence of patients with positive serology for hepatitis B and C and HIV.
Figure 6
Figure 6. Type of vascular access used for hemodialysis.
Figure 7
Figure 7. Distribution of dialysis patients according to biochemical results.
Figure 8
Figure 8. Distribution of patients according to dialysis modality.
See this image and copyright information in PMC

References

    1. Insituto Brasileitro de Geografia e Estatística [cited 2023 Sept 1];2023 Available from: https://www.ibge.gov.br/
    1. Nerbass FB, Lima HN, Thomé FS, Vieira No OM, Sesso R, Lugon JR. Brazilian Dialysis Survey 2021. J Bras Nefrol. 2023;45(2):192–8. - PMC - PubMed
    1. Sociedade Latino Americana de Nefrologia e Hipertensão Registro latinoamericando de dialisis y transplante renal: informe 2019. 2019. [cited 2023 Sept 1]. Available from: https://www.slanh.net/registros/
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