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Year : 2022  |  Volume : 32  |  Issue : 2  |  Page : 132-137

A study of estimated glomerular filtration rate in patients undergoing diagnostic or interventional coronary contrast procedures

1 Department of Nephrology, Aster Medcity, Kochi, Kerala, India
2 Department of Interventional Cardiology, Aster Medcity, Kochi, Kerala, India

Correspondence Address:
Vinod Kumar K
Aster Medcity, Cheranalloor, Kochi – 682 027, Kerala
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/ijn.IJN_280_20

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Introduction: Angiographic procedures are underused in patients with chronic kidney disease (CKD), who present with acute coronary syndromes, due to risk of contrast-induced acute kidney injury (CI-AKI). In this study, we assessed the change in estimated glomerular filtration rate (eGFR) over 3 months following coronary procedures in CKD patients. Methods: This observational study was done from July 2017 to January 2019 in patients undergoing elective coronary procedures with an eGFR <60 mL/min/1.73 m2. CKD-EPI equation was used to calculate eGFR pre and post coronary procedure at 24, 48, and 72 hours as well as 30, 90 days. AKI was diagnosed and patients were given prophylaxis for CI-AKI as per KDIGO recommendation (intravenous normal saline and oral N-acetyl cysteine). Results: Patients studied were 282 (225 males, 57 females) of which 68.1% were diabetics. Mean eGFR was 42.91 ± 10.51 mL/min/1.73 m2 and mean hemoglobin was 12.08 ± 1.51 gm/dL. Coronary angiogram (CAG) was done in 174; percutaneous transluminal coronary angioplasty (PTCA) was done in 108. Mean contrast volume in CAG was 55.17 ± 34.45 mL and in PTCA was 156.94±±47.99 mL. CI-AKI was seen in 66 (23.4%) patients. The incidence of CI-AKI increased with severity of underlying CKD. The variability of eGFR at 1 and 3 months after coronary procedures showed no significant change from baseline, even in the patients who developed CI-AKI. Conclusions: CI-AKI is self-limiting and has no major detrimental effects on eGFR at 1 and 3 months after contrast exposure.


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Indian Journal of Nephrology
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Online since 20th Sept '07