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Study of serum levels of calcium, phosphorus and alkaline phosphatase in chronic kidney disease

Authors: R. Freethi, A. Velayutha Raj, KalavathyPonniraivan, M. Rasheed Khan,A. Sundhararajan and Venkatesan

Int J Med Res Health Sci.49-56 | pdf PDF Full Text

Chronic kidney disease (CKD) is a worldwide public health problem, with increasing prevalence and lethal adverse outcomes like progressive loss of kidney function, cardiovascular disease and premature death. Disturbances in mineral metabolism and bone disease are common complications of CKD and an important cause of morbidity and decreased quality of life in patients with CKD. Patients with renal failure have an increased risk ofcardiovascular mortality that may be due in part to vascular calcification. To measure serum levels of calcium, phosphorus and alkaline phosphatase in patients in various stages of CKD and to correlate the same with creatinine and estimated Glomerular Filtration Rate (eGFR)values. This is a cross sectional study done at Thanjavur Medical College Hospital. 60 CKD patients and 50 healthy controls were enrolled in this study. Serum levels of creatinine, calcium, phosphorus and alkaline phosphatase were measured and eGFR values correlated with the serum creatinine. The mean values of creatinine (4.9 ± 2.23 mg/dl), calcium (9.8 ± 0.456 mg/dl) , phosphorus (4.19 ± 0.404 mg/dl) and alkaline phosphatase (94.01 ± 15.10 U/L) in the stu dy group are significantly higher than the control group in which the mean levels are 0.89 ± 0.102 mg/dl, 10.17 ± 0.37 mg/dl, 4.02 ± 0.16 mg/dl and 25.16 ± 4.65U/ L respectively. We have found that there is a significant difference in the above said parameters among patients in different stages of CKD (stage 3-5) indicating the progression of mineral bone disease with advancing stage of CKD.

Key words: chronic kidney disease, alkaline phosphatase, calcium, phosphorus.

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