Determinants of the intensity of uremic pruritus in patients receiving maintenance hemodialysis: A cross-sectional study.

<h4>Background</h4>Uremic pruritus (UP) is a common and frustrating symptom in patients receiving hemodialysis (HD). The majority of patients have mild to moderate itching of the skin, and a small percentage have severe itching, which seriously affects their quality of life and survival...

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Main Authors: Jian-Hui Zhao, Qiu-Shuang Zhu, Yi-Wen Li, Li-Li Wang
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2021-01-01
Series:PLoS ONE
Online Access:https://doi.org/10.1371/journal.pone.0245370
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author Jian-Hui Zhao
Qiu-Shuang Zhu
Yi-Wen Li
Li-Li Wang
author_facet Jian-Hui Zhao
Qiu-Shuang Zhu
Yi-Wen Li
Li-Li Wang
author_sort Jian-Hui Zhao
collection DOAJ
description <h4>Background</h4>Uremic pruritus (UP) is a common and frustrating symptom in patients receiving hemodialysis (HD). The majority of patients have mild to moderate itching of the skin, and a small percentage have severe itching, which seriously affects their quality of life and survival rate. However, little is known about factors that influence the intensity of itching in patients.<h4>Methods</h4>A cross-sectional study on uremic pruritus in male and female patients receiving HD was conducted in September 2019. This study included 148 eligible patients who received HD at the Blood Purification Center of Xinchang County People's Hospital, Zhejiang Province, China from March 2019 to June 2019. We collected general data consisted of age, sex, body mass index (BMI), place of residence, educational level, diabetes mellitus status and duration of HD; as well as clinical, biochemical indicators, including serum calcium (Ca), serum phosphorus (P), serum albumin (ALB), haemoglobin (Hb), serum intact parathyroid hormone (iPTH), pre-dialysis serum urea nitrogen (BUN), normalized protein catabolic rate (nPCR), urea nitrogen clearance index (KT/V), ferritin (FER) and pre-dialysis serum creatinine (sCR). We also assayed the inflammatory cytokine serum high sensitivity C-reactive protein (hs-CRP). The Five-Dimensional Itching Scale (5DIS) was used to evaluate the degree of skin itching (none, mild, moderate, or severe). We used multiple logistic regression to analyze influencing factors on the degree of skin itching in patients with UP.<h4>Results</h4>Of the 148 patients, 60 had uremic pruritus (incidence rate, 40.54%). These included 22 cases of mild skin itching (14.86%), 30 of moderate skin itching (20.27%), and 8 of severe skin itching (5.41%). Compared with uremia patients without skin pruritus, patients with UP had higher levels of iPTH, Hb, BUN, nPCR, and hs-CRP. The composition ratio showed significant differences between urban and rural patients with different degrees of skin itching (P = 0.017); moreover, the difference of iPTH and hs-CRP levels were statistically significant (P = 0.009 and < 0.001, respectively). Using no itching as a reference, multiple logistic regression analysis showed that as hs-CRP level increased, the patient's risks of mild skin itching (odds ratio [OR] = 1.740; 95% confidence interval [CI], 1.061-2.854; P = 0.028), moderate skin itching (OR = 2.8838 95% CI, 1.744-4.718; P < 0.001), and severe skin itching (OR = 9.440; 95% CI, 3.547-25.124; P < 0.001) all increased as well. Compared with urban residents, rural residents have a higher risk of moderate itching (OR = 3.869; 95% CI, 1.099-13.622; P = 0.035).<h4>Conclusion</h4>Levels of hs-CRP were associated with the intensity of skin itching in patients with UP. Higher hs-CRP levels were closely related to severe skin itching. The relationship between the intensity of skin itching and the environment in maintenance hemodialysis patients needs further clarification.
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spelling doaj.art-9e513cf1351d4e9d910b94bd17499cb02022-12-21T19:19:54ZengPublic Library of Science (PLoS)PLoS ONE1932-62032021-01-01161e024537010.1371/journal.pone.0245370Determinants of the intensity of uremic pruritus in patients receiving maintenance hemodialysis: A cross-sectional study.Jian-Hui ZhaoQiu-Shuang ZhuYi-Wen LiLi-Li Wang<h4>Background</h4>Uremic pruritus (UP) is a common and frustrating symptom in patients receiving hemodialysis (HD). The majority of patients have mild to moderate itching of the skin, and a small percentage have severe itching, which seriously affects their quality of life and survival rate. However, little is known about factors that influence the intensity of itching in patients.<h4>Methods</h4>A cross-sectional study on uremic pruritus in male and female patients receiving HD was conducted in September 2019. This study included 148 eligible patients who received HD at the Blood Purification Center of Xinchang County People's Hospital, Zhejiang Province, China from March 2019 to June 2019. We collected general data consisted of age, sex, body mass index (BMI), place of residence, educational level, diabetes mellitus status and duration of HD; as well as clinical, biochemical indicators, including serum calcium (Ca), serum phosphorus (P), serum albumin (ALB), haemoglobin (Hb), serum intact parathyroid hormone (iPTH), pre-dialysis serum urea nitrogen (BUN), normalized protein catabolic rate (nPCR), urea nitrogen clearance index (KT/V), ferritin (FER) and pre-dialysis serum creatinine (sCR). We also assayed the inflammatory cytokine serum high sensitivity C-reactive protein (hs-CRP). The Five-Dimensional Itching Scale (5DIS) was used to evaluate the degree of skin itching (none, mild, moderate, or severe). We used multiple logistic regression to analyze influencing factors on the degree of skin itching in patients with UP.<h4>Results</h4>Of the 148 patients, 60 had uremic pruritus (incidence rate, 40.54%). These included 22 cases of mild skin itching (14.86%), 30 of moderate skin itching (20.27%), and 8 of severe skin itching (5.41%). Compared with uremia patients without skin pruritus, patients with UP had higher levels of iPTH, Hb, BUN, nPCR, and hs-CRP. The composition ratio showed significant differences between urban and rural patients with different degrees of skin itching (P = 0.017); moreover, the difference of iPTH and hs-CRP levels were statistically significant (P = 0.009 and < 0.001, respectively). Using no itching as a reference, multiple logistic regression analysis showed that as hs-CRP level increased, the patient's risks of mild skin itching (odds ratio [OR] = 1.740; 95% confidence interval [CI], 1.061-2.854; P = 0.028), moderate skin itching (OR = 2.8838 95% CI, 1.744-4.718; P < 0.001), and severe skin itching (OR = 9.440; 95% CI, 3.547-25.124; P < 0.001) all increased as well. Compared with urban residents, rural residents have a higher risk of moderate itching (OR = 3.869; 95% CI, 1.099-13.622; P = 0.035).<h4>Conclusion</h4>Levels of hs-CRP were associated with the intensity of skin itching in patients with UP. Higher hs-CRP levels were closely related to severe skin itching. The relationship between the intensity of skin itching and the environment in maintenance hemodialysis patients needs further clarification.https://doi.org/10.1371/journal.pone.0245370
spellingShingle Jian-Hui Zhao
Qiu-Shuang Zhu
Yi-Wen Li
Li-Li Wang
Determinants of the intensity of uremic pruritus in patients receiving maintenance hemodialysis: A cross-sectional study.
PLoS ONE
title Determinants of the intensity of uremic pruritus in patients receiving maintenance hemodialysis: A cross-sectional study.
title_full Determinants of the intensity of uremic pruritus in patients receiving maintenance hemodialysis: A cross-sectional study.
title_fullStr Determinants of the intensity of uremic pruritus in patients receiving maintenance hemodialysis: A cross-sectional study.
title_full_unstemmed Determinants of the intensity of uremic pruritus in patients receiving maintenance hemodialysis: A cross-sectional study.
title_short Determinants of the intensity of uremic pruritus in patients receiving maintenance hemodialysis: A cross-sectional study.
title_sort determinants of the intensity of uremic pruritus in patients receiving maintenance hemodialysis a cross sectional study
url https://doi.org/10.1371/journal.pone.0245370
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AT qiushuangzhu determinantsoftheintensityofuremicpruritusinpatientsreceivingmaintenancehemodialysisacrosssectionalstudy
AT yiwenli determinantsoftheintensityofuremicpruritusinpatientsreceivingmaintenancehemodialysisacrosssectionalstudy
AT liliwang determinantsoftheintensityofuremicpruritusinpatientsreceivingmaintenancehemodialysisacrosssectionalstudy