Abstract
            Introduction: Cardiovascular disease is associated with chronic kidney disease (CKD) in both  children and adults. It is difficult to assess cardiovascular status in children for various reasons, such  as the lack of clinical manifestations in the early stages of cardiovascular disease. One of the methods  for assessing the cardiovascular status of patients is to assess the carotid intima-media thickness  (CIMT). However, only limited studies have been conducted on children to date.  
  Objectives: This study aimed to investigate factors affecting CIMT in children with chronic renal  failure.  
  Patients and Methods: This case-control study evaluated the CIMT of children hospitalized with  CKD in Mofid children’s hospital (Tehran, Iran) from 2019 to 2021. All children with CKD were  selected during the three-year period as the case group of 50 people. The control group was randomly  selected from 150 people who were referred to other departments. Medical record information and  detailed clinical examinations, laboratory and biochemical tests, and ultrasound examination of  CIMT were recorded and analyzed. A significance level of 0.05 was considered.  
  Results: This study showed, 52% of the patients were boys and the rest were girls (P=0.80). The  mean age in the patient group was 76.9±10.4 months since the mean age of control group was  32.8±3 months (P=0.008). The mean weight in the patient group was lower than in the control  group (P=0.0004). The median CIMT in the patient group was significantly higher than in the  control group (right and left CIMT for the patient group 0.48 mm and for the control group of the  right and left carotid 0.41 mm and 0.42 mm, respectively; P< 0.05). We also found age, weight,  mean corpuscular volume (MCV), serum vitamin D and uric acid levels and also blood glucose  concentration were correlated with the CIMT (P<0.05).  
  Conclusion: It is concluded that CIMT is a useful method for assessing the cardiovascular status of  children with CKD.