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Sagittal Abdominal Diameter Is an Independent Predictor of All-Cause and Cardiovascular Mortality in Incident Peritoneal Dialysis Patients

 Mi Jung Lee  ;  Dong Ho Shin  ;  Seung Jun Kim  ;  Dong Eun Yoo  ;  Kwang Il Ko  ;  Hyang Mo Koo  ;  Chan Ho Kim  ;  Fa Mee Doh  ;  Hyung Jung Oh  ;  Jung Tak Park  ;  Seung Hyeok Han  ;  Tae-Hyun Yoo  ;  Kyu Hun Choi  ;  Shin-Wook Kang 
 PLoS One, Vol.8(10) : e77082, 2013 
Journal Title
 PLoS One 
Issue Date
BACKGROUNDS AND AIMS: Visceral fat has a crucial role in the development and progression of cardiovascular disease, the major cause of death in end-stage renal disease (ESRD). Although sagittal abdominal diameter (SAD), as an index of visceral fat, significantly correlated with mortality in the general population, the impact of SAD on clinical outcomes has never been explored in ESRD patients. Therefore, we sought to elucidate the prognostic value of SAD in incident peritoneal dialysis (PD) patients. METHODS: We prospectively determined SAD by lateral abdominal X-ray at PD initiation, and evaluated the association of SAD with all-cause and cardiovascular mortality in 418 incident PD patients. RESULTS: The mean SAD was 24.5 ± 4.3 cm, and during a mean follow-up of 39.4 months, 97 patients (23.2%) died, and 49.4% of them died due to cardiovascular disease. SAD was a significant independent predictor of all-cause [3rd versus 1st tertile, HR (hazard ratio): 3.333, 95% CI (confidence interval): 1.514-7.388, P = 0.01; per 1 cm increase, HR: 1.071, 95% CI: 1.005-1.141, P = 0.03] and cardiovascular mortality (3rd versus 1st tertile, HR: 8.021, 95% CI: 1.994-32.273, P = 0.01; per 1 cm increase, HR: 1.106, 95% CI: 1.007-1.214, P = 0.03). Multivariate fractional polynomial analysis also showed that all-cause and cardiovascular mortality risk increased steadily with higher SAD values. In addition, SAD provided higher predictive value for all-cause (AUC: 0.691 vs. 0.547, P<0.001) and cardiovascular mortality (AUC: 0.644 vs. 0.483, P<0.001) than body mass index (BMI). Subgroup analysis revealed higher SAD (≥ 24.2 cm) was significantly associated with all-cause mortality in men, women, younger patients (<65 years), and patients with lower BMI (<22.3 kg/m(2)). CONCLUSIONS: SAD determined by lateral abdominal X-ray at PD initiation was a significant independent predictor of all-cause and cardiovascular mortality in incident PD patients. Estimating visceral fat by SAD could be useful to stratify mortality risk in these patients.
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1. College of Medicine (의과대학) > Dept. of Internal Medicine (내과학교실) > 1. Journal Papers
Yonsei Authors
강신욱(Kang, Shin Wook) ORCID logo https://orcid.org/0000-0002-5677-4756
고광일(Ko, Kwang Il)
구향모(Koo, Hyang Mo)
김승준(Kim, Seung Jun)
김찬호(Kim, Chan Ho)
도화미(Doh, Fa Mee) ORCID logo https://orcid.org/0000-0002-4780-6728
박정탁(Park, Jung Tak) ORCID logo https://orcid.org/0000-0002-2325-8982
오형중(Oh, Hyung Jung)
유동은(Yoo, Dong Eun)
유태현(Yoo, Tae Hyun) ORCID logo https://orcid.org/0000-0002-9183-4507
이미정(Lee, Mi Jung)
최규헌(Choi, Kyu Hun) ORCID logo https://orcid.org/0000-0003-0095-9011
한승혁(Han, Seung Hyeok) ORCID logo https://orcid.org/0000-0001-7923-5635
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