ULTRASONOGRAPHIC NOMOGRAM OF THE KIDNEYS IN APPARENTLY HEALTHY ADULTS IN A NIGERIAN POPULATION
Abstract
Background: Ultrasonographic assessment of the renal size is useful in diagnosis of renal pathologies.
Objectives: To determine the renal morphometry based on age, sex and anthropometry among apparently healthy adults in Bauchi, North Eastern Nigeria
Methods: A cross sectional study conducted among 533 healthy adults aged between 18-80 years in Abubakar Tafawa Balewa University Teaching Hospital, Bauchi. Real time ultrasound machine ALOKA SSD-1000, with curvilinear trans-abdominal transducer of frequency 3.5 mHz was used between December 2015 and November 2016. Kidney measurements were performed in a lateral decubitus position. The renal hilum was visualized to get the optimum longitudinal bipolar length (BPL) and transverse diameters (TD) of both kidneys in each subject were measured in the same plane. Renal parenchymal thickness was obtained from the cortex peri-renal fat interface (capsule) to the sinus pyramid apex interface at the mid portion on long section of the kidney. Subject’s height and weight were measured while standing erect against a ZT WHO weighing scale.
Results: The mean ± SD of BPL ,TD, parenchyma thickness, and cortical thickness of the right kidney were 98.5 ± 8.98mm, 39.3 ± 4.46mm, 15.6 ± 2.25mm and 7.1 ± 1.45mm respectively whereas that of the Left kidney were 102.0 ± 8.14mm, 41.4 ± 4.89mm, 17.5 ± 2.38mm and 8.3 ± 2.15mm respectively. There was statistical significant difference (P<0.05) between kidney morphometric parameters in females and in males.
Conclusion: The study has provided normal renal dimension, parenchyma thickness and cortical thickness for our population in north eastern Nigeria.
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