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Short-term effects of renal transplantation on coronary artery calcification: A prospective study
Pratyusha Priyadarshini, Sandeep Aggarwal1, Sandeep Guleria
1Department of Surgical Disciplines, All India Institute of Medical Sciences, New Delhi, India.
Insights
Renal transplantation may not reverse coronary artery calcification (CAC), but it appears to slow its progression. This study in Indian recipients found low CAC prevalence and improved health markers post-transplant.
Area of Science:
- Nephrology
- Cardiology
- Radiology
Background:
- Cardiovascular disease (CVD) is a primary cause of death in renal transplant patients.
- Coronary artery calcification (CAC) correlates with atherosclerosis and CVD.
- Assessing CAC and carotid intima-medial thickness (CIMT) is crucial for transplant outcomes.
Purpose of the Study:
- To determine the prevalence of CAC in Indian renal transplant recipients.
- To evaluate the long-term impact of renal transplantation on CAC and CIMT.
- To analyze the relationship between CAC, CIMT, and patient characteristics.
Main Methods:
- Prospective study of 28 renal transplant recipients.
- Dual-source computed tomography for CAC scoring (Agatston method).
- Carotid intima-medial thickness (CIMT) measurements at baseline, 6, and 12 months post-transplant.
Main Results:
- Low CAC prevalence (32%) observed, potentially due to younger age, shorter dialysis duration, and live-related transplants.
- Biochemical parameters improved post-transplantation.
- No progression in patients with zero baseline CAC; initial progression followed by stabilization in those with positive baseline CAC.
- Strong correlation found between CIMT and CAC score.
Conclusions:
- Renal transplantation does not reverse existing coronary artery calcification.
- Transplantation appears to reduce the rate of CAC progression over the long term.
- Improved cardiovascular health markers were noted post-transplant.
Abstract:
Cardiovascular disease is a leading cause of mortality in renal transplant recipients. Coronary artery calcification (CAC) has been found to have good correlation with atherosclerosis and cardiovascular morbidity. The objective of our study was to assess the prevalence of CAC and the long-term effects of renal transplantation on CAC and carotid intima-medial thickness (CIMT) in Indian renal transplant recipients. Twenty-eight renal transplant recipients were included in this prospective study. Dual-source computed tomography and calcium scoring using Agatston's method and CIMT measurement were performed at the time of transplant and then repeated at six and 12 months after transplantation. The prevalence of CAC in our study patients was low (32%), probably because they were young, had been on dialysis for a short duration and had undergone live-related renal transplant. An overall improvement in biochemical parameters was observed after transplantation. Patients with zero baseline calcium score did not show progression. Patients with baseline calcium score more than zero showed initial progression at 6 months and no further progression afterwards. There was good correlation between CIMT and CAC score. Our study suggests that renal transplantation does not reverse the calcification but appears to decrease the rate of progression in the long term.
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