Elevated preoperative phosphorus levels are an independent risk factor for cardiovascular mortality.

Abstract:

BACKGROUND/AIMS:Serum phosphorus levels have been associated with adverse long-term outcome in several populations, however, no prior studies evaluated short-term postoperative outcome. The present study evaluated the predictive value of phosphorus levels on 30-day outcome after vascular surgery. METHODS:The study included patients scheduled for major vascular surgery (aortic aneurysm repair, lower extremity revascularization or carotid surgery), divided into four quartiles based on the preoperative fasting phosphorus level. The endpoints of the analyses were all-cause and cardiovascular mortality during the first 30 postoperative days and during long-term follow-up (median 3.6 years, interquartile range 1.8-8.0). RESULTS:Prior to surgery, 1,798 patients were categorized into the following quartiles: <2.9 mg/dl (n = 459), 2.9-3.4 mg/dl (n = 456), 3.4-3.8 mg/dl (n = 444) and >3.8 mg/dl (n = 439), respectively. During the first 30 postoperative days, 81 (4.5%) patients died of which 66 (81%) secondary to a cardiovascular cause. In multivariate analyses, an independent association was observed between phosphorus level >3.8 mg/dl and all-cause (OR 2.53, 95% CI 1.2-5.4) or cardiovascular mortality (OR 2.37, 95% CI 1.1-5.7). Baseline serum phosphorus >3.8 mg/dl was also significantly associated with long-term all-cause mortality (HR 1.38, 95% CI 1.1-1.7). CONCLUSIONS:Preoperative elevated serum phosphorus demonstrated an independent relationship with the occurrence of all-cause and cardiovascular mortality during the first 30 days after major vascular surgery. In addition, an elevated serum phosphorus was independently associated with long-term mortality.

journal_name

Am J Nephrol

authors

van Kuijk JP,Flu WJ,Chonchol M,Valentijn TM,Verhagen HJ,Bax JJ,Poldermans D

doi

10.1159/000315856

subject

Has Abstract

pub_date

2010-01-01 00:00:00

pages

163-8

issue

2

eissn

0250-8095

issn

1421-9670

pii

000315856

journal_volume

32

pub_type

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