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Saudi Journal of Kidney Diseases and Transplantation
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Year : 2019  |  Volume : 30  |  Issue : 4  |  Page : 932-942
Etiological spectrum of anemia in non-dialysis-dependent chronic kidney disease: A single-center study from India

Department of Nephrology, Indira Gandhi Medical College, Shimla, Himachal Pradesh, India

Correspondence Address:
Sanjay Vikrant
Department of Nephrology, Indira Gandhi Medical College, Shimla - 171 001, Himachal Pradesh
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/1319-2442.265471

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A retrospective study was conducted over seven years and it aimed to find out various causes of anemia among patients with chronic kidney disease (CKD). The study included nondialysis-dependent adult CKD patients who underwent anemia evaluation. A total of 584 patients were studied. Three hundred and twenty-one (55%) patients were male and 263 (45%) were female. The mean age of the patients was 55.5 ± 14 years. One hundred and seventy-eight (30.5%) had a diabetic CKD and 406 (69.5%) had a nondiabetic CKD. Seventy-two (12.3%) patients were in CKD Stage 3, 193 (33%) patients in CKD Stage 4, and 319 (54.6%) patients in CKD Stage 5. The mean hemoglobin was 9.2 ± 2.2 g/dL. There was a progressive fall in hemoglobin with increasing severity of CKD and in CKD Stage 3, 4, and 5 the mean hemoglobin was 10 ± 2.2, 9.4 ± 2.1, and 8.4 ± 1.9 g/dL, respectively (P = 0.001). Most (47.4%) patients had moderate anemia followed by anemia of mild (31.4%) and severe (21.4%) degrees. Three hundred and seven (52.6%) patients had percent transferrin saturation (TSAT) <20% (functional iron deficiency). One hundred and sixty-two (27.7%) patients had serum ferritin <100 ng/mL (absolute iron deficiency); 334 (57.2%) patients had serum ferritin 100–500 ng/mL, but in 175 (52.4%) of them, TSAT was <20%; 88 (15.1%) patients had serum ferritin >500 ng/mL (58 (65.6%) were C-reactive protein (CRP) + and 55 (62.5%) had TSAT <20%). Overall, 392 (67.1%) patients had functional or absolute iron deficiency. One-third of the patients had elevated CRP levels. The anemia was macrocytic in 20.4% suggesting deficiency of folic acid and/or Vitamin B12. A high proportion (74.6%) of patients with normocytic anemia had iron deficiency. In the majority of nondialysis-dependent CKD patients, the etiology of anemia may be multifactorial; therefore, the treatment should be determined by documented causes of anemia.

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