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Association between vitamin C deficiency and dialysis modalities
Author(s) -
ZHANG KUNYING,
DONG JIE,
CHENG XUYANG,
BAI WENYING,
GUO WEIYA,
WU LEIYUN,
ZUO LI
Publication year - 2012
Publication title -
nephrology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 61
eISSN - 1440-1797
pISSN - 1320-5358
DOI - 10.1111/j.1440-1797.2012.01595.x
Subject(s) - medicine , dialysis , peritoneal dialysis , ascorbic acid , vitamin , vitamin d deficiency , continuous ambulatory peritoneal dialysis , vitamin c , vitamin d and neurology , endocrinology , gastroenterology , urology , food science , chemistry
Aim: We designed a cross‐sectional study to investigate plasma vitamin C level in patients who underwent maintenance haemodialysis (MHD) and continuous ambulatory peritoneal dialysis (CAPD) to explore whether there is a difference in vitamin C deficiency between MHD patients and CAPD patients. Methods: This investigation included 382 dialysis patients without vitamin C supplement before the study. Demographic characteristics, laboratory tests, ascorbic acid and total plasma vitamin C level were measured. A linear regression model was built to explore the association between vitamin C deficiency and dialysis modalities after adjusting for age, dialysis vintage, gender, Charlson index, modality of dialysis and hsCRP. Results: The range of plasma vitamin C level was from 0.48 µg/mL to 31.16 µg/mL. 35.9% ( n = 137) patients had severe vitamin C deficiency (<2 µg/mL). Plasma vitamin C level was inversely associated with age and dialysis vintage. After age and dialysis vintage were adjusted, vitamin C deficiency was associated with MHD. R square for model fitting was relatively low, which implied that there were other vitamin C influencing factors not included in the model. Conclusions: Vitamin C deficiency is common in dialysis patients, especially in patients treated with MHD.