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Chronic kidney disease (CKD) is a global & local health problem. Serum creatinine (Scr) is an indicator of renal function. Ultrasound is a freely available safe, reliable imaging modality, commonly used to assess kidneys in CKD. Association of renal length and Scr in CKD is evaluated in this study, as such data is lacking for Sri Lankan population. Methodology: A descriptive cross sectional observational study was conducted at the Radiology Unit of the Base Hospital Tissamaharama from March to August 2017 (as a preliminary study of a large ongoing study), using 41 patients with normal Scr (control group) and 74 patients diagnosed with CKD. The Scr values done within the last three months were evaluated. Absolute renal length was measured ultrasonically by an experienced Radiologist, who was blind to the patient’s serum creatinine value, with Mind-ray ultra sound scanner. Results: Study population (n=115) consists of control group (n=41) and CKD patients (n=74) where 40% were females and 60% of were males. Mean age was 58.3 years & mean renal length in control group was 9.6cm and CKD group was 9.0 cm. A significant difference observed in renal length in control and CKD groups (<0.001) & a weak negative correlation between renal length and Scr value in CKD group (r=0.328). Conclusion: Absolute renal length in CKD was significantly lower compared to the control group. Weak negative correlation was established between absolute renal length and the Scr value, thus with the renal function. Further studies are needed to evaluate the relationship between relative renal length and serum creatinine values and to assess above parameters according to etiological categories of CKD.

Assessment of renal length and serum creatinine values in chronic kidney disease - a hospital based study