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Non-invasive assessments of cardiovascular disease in patients with renal failure
1Division of Nephrology, Department of Medicine, UCLA School of Medicine, Los Angeles, California, USA. wgoodman@ucla.edu
Insights
Vascular calcification is common in chronic renal failure patients, increasing cardiovascular mortality. Electron-beam computed tomography can detect and monitor this calcification, aiding in evaluating new therapies.
Area of Science:
- Nephrology
- Cardiology
- Radiology
Background:
- Vascular calcification is prevalent in chronic renal failure (CRF) patients, contributing to high cardiovascular mortality.
- Calcification can occur in the intimal (atherosclerosis) or medial (mineral metabolism) arterial layers.
- Coronary artery calcification (CAC) is common in end-stage renal disease (ESRD) patients on dialysis, but its clinical significance is unclear.
Purpose of the Study:
- To investigate the clinical significance of CAC in ESRD patients.
- To determine if electron-beam computed tomography (EBCT) can predict atherosclerotic cardiovascular disease (ASCVD) in CRF.
- To assess EBCT's utility in monitoring calcification progression and evaluating therapeutic strategies.
Main Methods:
- Utilized electron-beam computed tomography (EBCT) to measure coronary artery calcification.
- Coronary angiography was considered for diagnostic value assessment.
- Monitoring calcification progression in long-term dialysis patients.
Main Results:
- EBCT detects and monitors coronary calcification in dialysis patients.
- Calcification scores in ESRD may represent both intimal and medial calcification.
- Further studies using coronary angiography are needed to confirm EBCT's predictive value for ASCVD in CRF.
Conclusions:
- EBCT is a valuable tool for detecting and monitoring coronary calcification in CRF patients on dialysis.
- The findings may inform the development of new therapies to mitigate vascular calcification risks.
- Clarifying the relationship between CAC and ASCVD in ESRD requires further investigation.
Abstract:
Vascular calcification is common in patients with chronic renal failure, and it may contribute to the very high mortality rate from cardiovascular causes in the end-stage renal disease population. Vascular calcification in chronic renal failure can arise from the calcification of the intimal layer of arteries as a result of atherosclerosis or from medial wall calcification due largely to alterations in mineral metabolism. Although several reports indicate that coronary artery calcification, as measured by electron-beam computed tomography, is quite common in patients with end-stage renal disease who are treated with dialysis, the clinical significance of these findings remain uncertain. In the general population, electron-beam computed tomography evidence of coronary calcification serves as a useful index of atherosclerotic burden and has value as a predictor of adverse coronary events. The relationship between coronary artery calcification and atherosclerotic cardiovascular disease has not been adequately studied, however, in patients with end-stage renal disease, and calcification scores in this population may reflect both intimal and medial wall calcification. Assessments using coronary angiography are needed to determine the diagnostic value of electron-beam computed tomography as a predictor of atherosclerotic cardiovascular disease in patients with chronic renal failure. Nevertheless, electron-beam computed tomography makes it possible to detect the presence and monitor the progression of coronary calcification in those undergoing long-term dialysis. The technique may provide important information about the impact of new therapeutic strategies aimed at reducing the risks of vascular calcification in those with chronic renal failure.