Ik Jun Choi1, Sungmin Lim2, Eun-Ho Choo3, Jin-Jin Kim4, Byung-Hee Hwang4, Tae-Hoon Kim5, Suk Min Seo1, Yoon-Seok Koh5, Dong Il Shin1, Hun-Jun Park5, Pum-Joon Kim5, Doo-Soo Jeon1, Seung-Hwan Lee6, Jae-Hyoung Cho6, Jung-Im Jung7, Kiyuk Chang5, Ki-Bae Seung5. 1. Cardiovascular Center and Cardiology Division, Incheon St. Mary's Hospital, The Catholic University of Korea, Incheon, Republic of Korea. 2. Cardiovascular Center and Cardiology Division, Bucheon St. Mary's Hospital, The Catholic University of Korea, Bucheon, Republic of Korea. 3. Cardiovascular Center and Cardiology Division, Uijeongbu St Mary's Hospital, The Catholic University of Korea, Uijeongbu, Republic of Korea. 4. Cardiovascular Center and Cardiology Division, St. Paul's Hospital, The Catholic University of Korea, Seoul, Republic of Korea. 5. Cardiovascular Center and Cardiology Division, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Republic of Korea. 6. Division of Endocrinology, Department of Internal Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Republic of Korea. 7. Department of Radiology, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Republic of Korea.
Abstract
AIM: The aim of this study was to assess the combined effects of chronic kidney disease (CKD) and diabetes on the extent and developmental pattern of coronary artery disease (CAD). METHODS: A total of 3,017 self-referred asymptomatic individuals without known CAD who underwent 64-channel dual-source coronary computed tomography angiography between 2006 and 2010 were enrolled. The patients were divided into six groups based on their diabetes status (nondiabetic or diabetic) and estimated glomerular filtration rate (eGFR) (eGFR > 90 mL/min/1.73 m2, normal renal function; eGFR 60-89, mild CKD; or eGFR 30-59, moderate CKD). We compared the coronary artery calcium score (CACS), segment stenosis score (SSS), and ≥50% obstructive CAD among the groups. RESULTS: In nondiabetics, whereas SSS and ≥50% obstructive CAD were not different as renal function deteriorated, after adjusting for cardiovascular risk factors, CACS showed a unique developmental pattern: no CACS increase until mild CKD, but abrupt increase from the stage of moderate CKD (moderate vs. normal renal function, adjusted OR 5.118, 95% CI 1.293-20.262, p = 0.020). In diabetics, patients from the stage of mild CKD were more likely to have ≥50% obstructive CAD (p = 0.004), higher CACS (p = 0.020), and SSS (p = 0.001) in multivariable analysis. CONCLUSIONS: The presence of CKD did not have a significant impact on the development of coronary atherosclerosis, but affected the progression of coronary calcification more markedly from the stage of moderate CKD in nondiabetics. However, in diabetics, the deterioration of renal function was significantly associated with the development of coronary atherosclerosis and calcification from the stage of mild CKD.
AIM: The aim of this study was to assess the combined effects of chronic kidney disease (CKD) and diabetes on the extent and developmental pattern of coronary artery disease (CAD). METHODS: A total of 3,017 self-referred asymptomatic individuals without known CAD who underwent 64-channel dual-source coronary computed tomography angiography between 2006 and 2010 were enrolled. The patients were divided into six groups based on their diabetes status (nondiabetic or diabetic) and estimated glomerular filtration rate (eGFR) (eGFR > 90 mL/min/1.73 m2, normal renal function; eGFR 60-89, mild CKD; or eGFR 30-59, moderate CKD). We compared the coronary artery calcium score (CACS), segment stenosis score (SSS), and ≥50% obstructive CAD among the groups. RESULTS: In nondiabetics, whereas SSS and ≥50% obstructive CAD were not different as renal function deteriorated, after adjusting for cardiovascular risk factors, CACS showed a unique developmental pattern: no CACS increase until mild CKD, but abrupt increase from the stage of moderate CKD (moderate vs. normal renal function, adjusted OR 5.118, 95% CI 1.293-20.262, p = 0.020). In diabetics, patients from the stage of mild CKD were more likely to have ≥50% obstructive CAD (p = 0.004), higher CACS (p = 0.020), and SSS (p = 0.001) in multivariable analysis. CONCLUSIONS: The presence of CKD did not have a significant impact on the development of coronary atherosclerosis, but affected the progression of coronary calcification more markedly from the stage of moderate CKD in nondiabetics. However, in diabetics, the deterioration of renal function was significantly associated with the development of coronary atherosclerosis and calcification from the stage of mild CKD.
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