Cardiac structural and functional abnormalities in end stage renal disease patients with elevated cardiac troponin T

Area of Science:

• Cardiology
• Nephrology
• Biomarkers

Background:

• End-stage renal disease (ESRD) is associated with significant cardiovascular complications.
• Cardiac troponin T (cTnT) is a biomarker for cardiac injury, but its role in ESRD requires further elucidation.
• Elevated cTnT in ESRD patients may indicate underlying cardiac abnormalities and predict mortality.

Purpose of the Study:

• To investigate cardiac structural and functional abnormalities in ESRD patients with elevated cardiac troponin T (cTnT) concentrations.
• To assess the association between raised cTnT levels and mortality in end-stage renal disease.
• To identify predictors of elevated cTnT in this patient population.

Main Methods:

• A prospective observational study of 126 renal transplant candidates over two years.
• Clinical, biochemical, echocardiographic, and coronary angiographic data were analyzed.
• Cardiac troponin T (cTnT) concentrations were dichotomized at < 0.04 microg/l and < 0.10 microg/l for comparison.

Main Results:

• Raised cTnT correlated with increased left ventricular (LV) size, filling pressures, and impaired LV systolic and diastolic function.
• Patients with elevated cTnT had higher proportions of diabetes and were more frequently on dialysis.
• LV end-systolic diameter index and E:Ea ratio independently predicted cTnT rises, while diabetes was strongly associated with elevated cTnT.

Conclusions:

• Elevated cardiac troponin T (cTnT) concentrations in end-stage renal disease (ESRD) patients are associated with increased mortality.
• Raised cTnT is strongly linked to diabetes, left ventricular (LV) dilatation, and impaired LV systolic and diastolic function.
• Elevated cTnT in ESRD patients is not directly associated with severe coronary artery disease.