Dataset Information

Free thyroxine level as an independent predictor of infection-related mortality in patients on peritoneal dialysis: a prospective multicenter cohort study.

ABSTRACT:

Background

Previous studies have reported the relationship between thyroid hormone levels and mortality in dialysis patients. However, little is known about the association of free thyroxine (fT4) and mortality in patients on peritoneal dialysis (PD). This study investigated the association between basal and annual variation in fT4 level and mortality in PD patients.

Methods

Patients on maintenance PD were enrolled from a prospective multicenter cohort study in Korea; their serum triiodothyronine, fT4, and thyroid-stimulating hormone levels were measured 12 months apart. Patients with overt thyroid disease and those receiving thyroid hormone replacement therapy were excluded from the analysis. Patients were divided into two groups based on the median levels of fT4. The differences of all-cause, infection-related, and cardiovascular mortalities were analyzed between the two groups. The association of basal levels and annual variation with mortality was investigated with Kaplan-Meier curves and Cox proportional hazard models.

Results

Among 235 PD patients, 31 (13.2%) deaths occurred during the mean follow-up period of 24 months. Infection (38.7%) was the most common cause of death. Lower basal fT4 levels were an independent predictor of all-cause and infection-related death (hazard ratio [HR]?=?2.74, 95% confidence interval [CI] 1.27-5.90, P?=?0.01, and HR?=?6.33, 95% CI 1.16-34.64, P?=?0.03, respectively). Longitudinally, patients with persistently lower fT4 levels during the 12-month period had significantly higher all-cause mortality than those with persistently higher levels (HR?=?3.30, 95% CI 1.15-9.41, P?=?0.03). The area under the receiver operating characteristic curve of fT4 for predicting all-cause and infection-related mortality was 0.60 and 0.68, respectively.

Conclusions

fT4 level is an independent predictor of mortality and is especially attributable to infection in PD patients. This predictor was consistent when considering both baseline measurements and annual variation patterns. Close attention to infection in PD patients with relatively lower fT4 levels should be considered.

SUBMITTER: Jung HY

PROVIDER: S-EPMC4249823 | biostudies-literature | 2014

REPOSITORIES: biostudies-literature

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Publications

Free thyroxine level as an independent predictor of infection-related mortality in patients on peritoneal dialysis: a prospective multicenter cohort study.

Jung Hee-Yeon HY Cho Jang-Hee JH Jang Hye Min HM Kim Yon Su YS Kang Shin-Wook SW Yang Chul Woo CW Kim Nam-Ho NH Choi Ji-Young JY Park Sun-Hee SH Kim Chan-Duck CD Kim Yong-Lim YL

PloS one 20141201 12

<h4>Background</h4>Previous studies have reported the relationship between thyroid hormone levels and mortality in dialysis patients. However, little is known about the association of free thyroxine (fT4) and mortality in patients on peritoneal dialysis (PD). This study investigated the association between basal and annual variation in fT4 level and mortality in PD patients.<h4>Methods</h4>Patients on maintenance PD were enrolled from a prospective multicenter cohort study in Korea; their serum ...[more]

PMID: 25436457

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Dataset Information

Free thyroxine level as an independent predictor of infection-related mortality in patients on peritoneal dialysis: a prospective multicenter cohort study.

Background

Methods

Results

Conclusions

Publications

Free thyroxine level as an independent predictor of infection-related mortality in patients on peritoneal dialysis: a prospective multicenter cohort study.

Similar Datasets

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