Korean J Med.  2017 Jun;92(3):269-276. 10.3904/kjm.2017.92.3.269.

The Impact of Arterial Micro-calcification of the Vascular Access on Coronary Artery Calcification and Cardiovascular Mortality in Incident Hemodialysis Patients

• Lee YB
• Choi BM
• Hwang HS
• Park HS
• Park SC
• Kim YO

• KMID: 2410187
• DOI: http://doi.org/10.3904/kjm.2017.92.3.269

Abstract

BACKGROUND/AIMS
The aim of this study was to explore the relationship between arterial micro-calcification (AMiC) and coronary artery calcification, and to determine the impact of AMiC on cardiovascular mortality in incident hemodialysis patients.
METHODS
One hundred and nineteen hemodialysis patients who received vascular access surgeries between April 2011 and May 2015 were included in this study. AMiC was diagnosed by pathologic examination of arterial specimens acquired during surgery, using von Kossa stain. All patients underwent multi-detector computed tomography imaging, and coronary artery calcium scores (CACS) were calculated. We evaluated the association between AMiC and CACS in these patients, and examined the incidence of cardiovascular death (through Febraury 2017) in patients with and without AMiC.
RESULTS
The mean age of the patient group was 64.3 ± 13.0 years, and 64% were male (n = 76). Of 119 patients, 67 (56.3%) were positive for AMiC of the vascular access. The mean CACS was 430.4 ± 720.2 (0-3,954), and 99 patients were considered positive for CAC (83.1%). By multivariate logistic regression analysis, CACS was independently associated with AMiC. The mean follow- up period was 35.5 ± 17.8 months. During this time there were 26 all-cause deaths, of which 17 were cardiovascular. Kaplan-Meier survival analysis revealed that AMiC was associated with cardiovascular mortality (log rank = 9.0, p < 0.05).
CONCLUSIONS
AMiC may be associated with coronary artery calcification in incident hemodialysis patients, and may also be a risk factor for cardiovascular mortality.

Keyword

Coronary atherosclerosis; Vascular calcification; Renal dialysis

MeSH Terms

Calcium
Coronary Artery Disease
Coronary Vessels*
Humans
Incidence
Logistic Models
Male
Mortality*
Renal Dialysis*
Risk Factors
Vascular Calcification
Calcium