Ambient carbon monoxide correlates with mortality risk of hemodialysis patients: comparing results of control selection in the case-crossover designs

Background Growing evidence suggests that environmental air pollution adversely affects kidney health. To date, the association between carbon monoxide (CO) and mortality in patients with end-stage renal disease (ESRD) has not been examined. Methods Among 134,478 dialysis patients in the Korean ESRD...

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Main Authors: Hyuk Huh, Ejin Kim, Una Amelia Yoon, Mun Jeong Choi, Hyewon Lee, Soie Kwon, Clara Tammy Kim, Dong Ki Kim, Yon Su Kim, Chun Soo Lim, Jung Pyo Lee, Ho Kim, Yong Chul Kim
Format: Article
Language:English
Published: The Korean Society of Nephrology 2022-09-01
Series:Kidney Research and Clinical Practice
Subjects:
Online Access:http://www.krcp-ksn.org/upload/pdf/j-krcp-21-228.pdf
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author Hyuk Huh
Ejin Kim
Una Amelia Yoon
Mun Jeong Choi
Hyewon Lee
Soie Kwon
Clara Tammy Kim
Dong Ki Kim
Yon Su Kim
Chun Soo Lim
Jung Pyo Lee
Ho Kim
Yong Chul Kim
author_facet Hyuk Huh
Ejin Kim
Una Amelia Yoon
Mun Jeong Choi
Hyewon Lee
Soie Kwon
Clara Tammy Kim
Dong Ki Kim
Yon Su Kim
Chun Soo Lim
Jung Pyo Lee
Ho Kim
Yong Chul Kim
author_sort Hyuk Huh
collection DOAJ
description Background Growing evidence suggests that environmental air pollution adversely affects kidney health. To date, the association between carbon monoxide (CO) and mortality in patients with end-stage renal disease (ESRD) has not been examined. Methods Among 134,478 dialysis patients in the Korean ESRD cohort between 2001 and 2014, 8,130 deceased hemodialysis patients were enrolled, and data were analyzed using bidirectional, unidirectional, and time-stratified case-crossover design. We examined the association between short-term CO concentration and mortality in patients with ESRD. We used a two-pollutant model, adjusted for temperature as a climate factor and for nitrogen dioxide (NO2), sulfur dioxide (SO2), ozone (O3), and particulate matter less than 10 μm in diameter as air pollution variables other than CO. Results Characteristics of the study population included age (66.2 ± 12.1 years), sex (male, 59.1%; female, 40.9%), and comorbidities (diabetes, 55.6%; hypertension, 14.4%). Concentration of CO was significantly associated with all-cause mortality in the three case-crossover designs using the two-pollutant model adjusted for SO2. Patients with diabetes or age older than 75 years had a higher risk of mortality than patients without diabetes or those younger than 75 years. Conclusion Findings presented here suggest that higher CO concentration is correlated with increased all-cause mortality in hemodialysis patients, especially in older high-risk patients.
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spelling doaj.art-8c9e8473b6814a89bb2d1d8ce8ec15a12022-12-22T04:39:33ZengThe Korean Society of NephrologyKidney Research and Clinical Practice2211-91322211-91402022-09-0141560161010.23876/j.krcp.21.2286145Ambient carbon monoxide correlates with mortality risk of hemodialysis patients: comparing results of control selection in the case-crossover designsHyuk Huh0Ejin Kim1Una Amelia Yoon2Mun Jeong Choi3Hyewon Lee4Soie Kwon5Clara Tammy Kim6Dong Ki Kim7Yon Su Kim8Chun Soo Lim9Jung Pyo Lee10Ho Kim11Yong Chul Kim12 Department of Internal Medicine, Seoul National University Hospital, Seoul, Republic of Korea Institute of Health and Environment, Graduate School of Public Health Seoul National University, Seoul, Republic of Korea Department of Biostatistics and Epidemiology, Graduate School of Public Health, Seoul National University Department of Biostatistics and Epidemiology, Graduate School of Public Health, Seoul National University Department of Health Administration and Management, College of Medical Sciences, Soonchunhyang University, Asan, Republic of Korea Department of Internal Medicine, Seoul National University Hospital, Seoul, Republic of Korea Institute of Life and Death Studies, Hallym University, Chuncheon, Republic of Korea Department of Internal Medicine, Seoul National University Hospital, Seoul, Republic of Korea Kidney Research Institute, Seoul National University Medical Research Center, Seoul, Republic of Korea Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea Institute of Health and Environment, Graduate School of Public Health Seoul National University, Seoul, Republic of Korea Department of Internal Medicine, Seoul National University Hospital, Seoul, Republic of KoreaBackground Growing evidence suggests that environmental air pollution adversely affects kidney health. To date, the association between carbon monoxide (CO) and mortality in patients with end-stage renal disease (ESRD) has not been examined. Methods Among 134,478 dialysis patients in the Korean ESRD cohort between 2001 and 2014, 8,130 deceased hemodialysis patients were enrolled, and data were analyzed using bidirectional, unidirectional, and time-stratified case-crossover design. We examined the association between short-term CO concentration and mortality in patients with ESRD. We used a two-pollutant model, adjusted for temperature as a climate factor and for nitrogen dioxide (NO2), sulfur dioxide (SO2), ozone (O3), and particulate matter less than 10 μm in diameter as air pollution variables other than CO. Results Characteristics of the study population included age (66.2 ± 12.1 years), sex (male, 59.1%; female, 40.9%), and comorbidities (diabetes, 55.6%; hypertension, 14.4%). Concentration of CO was significantly associated with all-cause mortality in the three case-crossover designs using the two-pollutant model adjusted for SO2. Patients with diabetes or age older than 75 years had a higher risk of mortality than patients without diabetes or those younger than 75 years. Conclusion Findings presented here suggest that higher CO concentration is correlated with increased all-cause mortality in hemodialysis patients, especially in older high-risk patients.http://www.krcp-ksn.org/upload/pdf/j-krcp-21-228.pdfcarbon monoxideelderlyhemodialysismortality
spellingShingle Hyuk Huh
Ejin Kim
Una Amelia Yoon
Mun Jeong Choi
Hyewon Lee
Soie Kwon
Clara Tammy Kim
Dong Ki Kim
Yon Su Kim
Chun Soo Lim
Jung Pyo Lee
Ho Kim
Yong Chul Kim
Ambient carbon monoxide correlates with mortality risk of hemodialysis patients: comparing results of control selection in the case-crossover designs
Kidney Research and Clinical Practice
carbon monoxide
elderly
hemodialysis
mortality
title Ambient carbon monoxide correlates with mortality risk of hemodialysis patients: comparing results of control selection in the case-crossover designs
title_full Ambient carbon monoxide correlates with mortality risk of hemodialysis patients: comparing results of control selection in the case-crossover designs
title_fullStr Ambient carbon monoxide correlates with mortality risk of hemodialysis patients: comparing results of control selection in the case-crossover designs
title_full_unstemmed Ambient carbon monoxide correlates with mortality risk of hemodialysis patients: comparing results of control selection in the case-crossover designs
title_short Ambient carbon monoxide correlates with mortality risk of hemodialysis patients: comparing results of control selection in the case-crossover designs
title_sort ambient carbon monoxide correlates with mortality risk of hemodialysis patients comparing results of control selection in the case crossover designs
topic carbon monoxide
elderly
hemodialysis
mortality
url http://www.krcp-ksn.org/upload/pdf/j-krcp-21-228.pdf
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