Abstract:
BACKGROUND:Seasonal mortality differences have been reported in US hemodialysis (HD) patients. Here we examine the effect of seasons on mortality, clinical and laboratory parameters on a global scale. METHODS:Databases from the international Monitoring Dialysis Outcomes (MONDO) consortium were queried to identify patients who received in-center HD for at least 1 year. Clinics were stratified by hemisphere and climate zone (tropical or temperate). We recorded mortality and computed averages of pre-dialysis systolic blood pressure (pre-SBP), interdialytic weight gain (IDWG), serum albumin, and log C-reactive protein (CRP). We explored seasonal effects using cosinor analysis and adjusted linear mixed models globally, and after stratification. RESULTS:Data from 87,399 patients were included (northern temperate: 63,671; northern tropical: 7,159; southern temperate: 13,917; southern tropical: 2,652 patients). Globally, mortality was highest in winter. Following stratification, mortality was significantly lower in spring and summer compared to winter in temperate, but not in tropical zones. Globally, pre-SBP and IDWG were lower in summer and spring as compared to winter, although less pronounced in tropical zones. Except for southern temperate zone, serum albumin levels were higher in winter. CRP levels were highest in winter. CONCLUSION:Significant global seasonal variations in mortality, pre-SBP, IDWG, albumin and CRP were observed. Seasonal variations in mortality were most pronounced in temperate climate zones.
journal_name
BMC Nephroljournal_title
BMC nephrologyauthors
Guinsburg AM,Usvyat LA,Etter M,Xu X,Thijssen S,Marcelli D,Canaud B,Marelli C,Barth C,Wang Y,Carioni P,van der Sande FM,Kotanko P,Kooman JP,Monitoring Dialysis Outcomes (MONDO) consortium.doi
10.1186/s12882-015-0129-ysubject
Has Abstractpub_date
2015-08-14 00:00:00pages
139issn
1471-2369pii
10.1186/s12882-015-0129-yjournal_volume
16pub_type
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