Background: The normal axis of calcium, phosphorus, vitamin D, and intact parathyroid hormone (iPTH) come under stress when chronic kidney disease (CKD) progresses beyond stage 3(GFR<30 ml/kg/1.732). This results in increased secretion of iPTH which is known as secondary hyperparathyroidism. This exacerbates further if simultaneous deficiency of nutritional vitamin D (Cholecalciferol) is also found. Secondary hyperparathyroidism results in vascular calcification and increases cardiac mortality. Early intervention in form of dietary modification (low phosphorus, low potassium), correcting vitamin D deficiency along with the addition of active vitamin D (calcitriol) would help in alleviating patients’ suffering and saving costs as well.
Material and method: This study was conducted from Jan 2017 to Jan 2018 at The Indus Hospital, Karachi with the age group ≥14 years of either gender who were suffering from chronic kidney disease (CKD). Patients on dialysis, chronic liver disease, and vitamin D supplementation were excluded. Their history, demographic, BMI, Calcium, Phosphorus, Alkaline Phosphatase, 25-Hyydorxyvitamin D, albumin, and intact parathyroid hormone (iPTH) were all noted.
Results: 265 patients were enrolled for final analysis in this data with a male to female ratio of 1:1.03 (146/121). Hyperparathyroidism (iPTH> 68 pg/ml) was seen in 190 (71.2%) patients. Mean values of all quantitative variables were not statistically significant when compared hyper parathyroid with normal parathyroid. Hyperparathyroidism was found significant in late CKD in comparison to early CKD (P-value <.001), While vitamin D deficiency was significantly associated with hyperparathyroidism in early CKD but not in late CKD.
Conclusion: Hyperparathyroidism is significantly present in CKD which is contributed by CKD progression and vitamin D deficiency.
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