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Evaluation of cardiovascular risk for renal transplantation in diabetic patients
Insights
Diabetic patients with end-stage renal disease face high cardiovascular risks. Pre-transplant cardiac evaluation helps identify those at greatest risk, suggesting some patients should not undergo kidney transplantation.
Area of Science:
- Nephrology
- Cardiology
- Diabetology
Background:
- Cardiovascular disease is a leading cause of death in diabetic patients with end-stage renal disease.
- Renal transplantation is a treatment option for end-stage renal disease, but cardiovascular complications pose a significant risk.
Purpose of the Study:
- To evaluate the risk of cardiovascular complications in diabetic patients with end-stage renal disease prior to renal transplantation.
- To identify patients at high risk for cardiovascular events who may not be suitable candidates for renal transplantation.
Main Methods:
- Sixty patients with type I diabetes and end-stage renal disease were assessed before renal transplantation.
- Cardiac risk was determined using thallium stress testing and/or cardiac catheterization.
- Patients were categorized into five risk groups based on test results.
Main Results:
- No cardiovascular events occurred in patients with negative stress test results.
- Significant coronary artery disease was found in 38% of patients.
- Mortality rates were significantly higher in patients with coronary artery disease (43.5%) compared to those without (5.4%).
- Severe coronary artery disease was associated with a 62% mortality rate, while moderate disease had a 20% mortality rate.
Conclusions:
- Pre-transplant cardiovascular risk assessment is crucial for diabetic patients with end-stage renal disease.
- Patients identified with high cardiovascular risk, particularly those with significant coronary artery disease, may not benefit from renal transplantation.
- This evaluation can help optimize patient selection for renal transplantation and improve outcomes.
Abstract:
Cardiovascular disease contributes in a major way to morbidity and mortality in diabetic patients with end-stage renal disease. Sixty patients with type I diabetes were evaluated prior to renal transplantation to determine the risk of cardiovascular complications. On the basis of results of thallium stress testing and/or cardiac catheterization, each patient was assigned to one of five categories. There were no cardiovascular events in the seven patients who had negative results on stress testing. Of the remaining 53 patients, all of whom underwent cardiac catheterization, 30 had normal coronary arteries. None of these 30 patients had any cardiac morbidity, and the two deaths that occurred in this group were not attributable to cardiac causes. Significant coronary artery disease was present in 38 percent of the patients. The overall mortality rate was 5.4 percent in those patients without coronary artery disease and 43.5 percent in those with the disease. In addition, the mortality rate in patients with coronary disease classified as severe was 62 percent, whereas it was 20 percent in those categorized as having moderate disease. The data indicate that patients with diabetes and end-stage renal disease who are at highest risk for cardiovascular events can be identified, and these patients probably should not undergo renal transplantation.