Factors related to silent myocardial damage in hemodialysis patients.
BACKGROUND
Both traditional and non-traditional risk factors play a role for the development of cardiovascular disease in hemodialysis patients. However, a specific relationship between these risk factors and silent myocardial damage is unknown.


METHODS
Demographic, anthropometric, clinical, and laboratory data were collected. Silent myocardial damage was defined by elevated cardiac troponin I values above cutoff values.


RESULTS
In total, 113 hemodialysis patients were included. Cardiac troponin I concentrations were below cutoff value (<2.3 ng/mL) in 103 (91.2%) patients (Group 1), whereas 10 (8.8%) patients had elevated concentrations (Group 2). Group 1 patients had higher levels of hemoglobin (p = 0.002) and high-density lipoprotein cholesterol (p = 0.002) and lower C-reactive protein (p = 0.003) and tumor necrosis factor-alpha (p = 0.005) levels, as well as less incidence of left ventricular hypertrophy (p = 0.045), when compared to Group 2 patients. Diabetes mellitus (Beta = +0.160, p = 0.021), left ventricular hypertrophy (Beta = +0.247, p < 0.0001), uncontrolled blood pressure (Beta = +0.170, p = 0.016), normalized protein equivalent of total nitrogen appearance (Beta = -0.230, p = 0.001), hemoglobin (Beta = -0.302, p < 0.0001), and tumor necrosis factor-alpha (Beta = +0.506, p < 0.0001) were found to be independently associated with cardiac troponin I levels in multiple linear regression analysis.


CONCLUSIONS
Both traditional and non-traditional risk factors are related with silent myocardial damage, which is considered to an antecedent of major cardiovascular events. Hemodialysis patients, even when asymptomatic, must be closely followed up for the presence of these risk factors.
Afsar
Baris
B
Baskent University Hospital, Department of Nephrology, Ankara, Turkey. afsarbrs@yahoo.com
Elsurer
Rengin
R
Akgul
Arzu
A
Sezer
Siren
S
Ozdemir
Fatma Nurhan
FN
D000328:Adult; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D007676:Kidney Failure, Chronic / Q000097:blood / Q000473:pathology* / Q000628:therapy; D008297:Male; D008875:Middle Aged; D009206:Myocardium / Q000473:pathology*; D006435:Renal Dialysis; D012307:Risk Factors; D019210:Troponin I / Q000097:blood*
D019210:Troponin I