A computed tomography angiography study to correlate main renal artery diameter with presence of accessory renal artery in healthy live kidney donors

Alka Nagar; Navbir Pasricha; Eti Sthapak; Deshraj Gurjar; Hira Lal

doi:10.4103/JASI.JASI_48_20

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ORIGINAL ARTICLE

Year : 2020 \| Volume : 69 \| Issue : 4 \| Page : 196-200

A computed tomography angiography study to correlate main renal artery diameter with presence of accessory renal artery in healthy live kidney donors Alka Nagar¹, Navbir Pasricha², Eti Sthapak², Deshraj Gurjar³, Hira Lal⁴ ¹ Department of Anatomy, GSVM Medical College, Kanpur, Uttar Pradesh, India ² Department of Anatomy, Dr. RML Institute of Medical Sciences, Lucknow, Uttar Pradesh, India ³ Department of Nephrology, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India ⁴ Department of Radiology, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India Correspondence Address: Dr. Navbir Pasricha Flat No. 705, Faculty Residential Apartments, Dr. RML Institute of Medical, Sciences, Lucknow, Uttar Pradesh India Source of Support: None, Conflict of Interest: None DOI: 10.4103/JASI.JASI_48_20

Introduction: The chosen technique of surgery during nephrectomy can be influenced by the sudden discovery of an aberrant source of blood supply to the kidney. Thus, a prospective study was undertaken to investigate the relationship between the diameter of the main renal artery and the presence of an accessory renal artery by computed tomography (CT)-angiography. Material and Methods: The study was conducted on 115 healthy kidney donors who presented to the department of nephrology and radiology for voluntary kidney donation. All CT examinations were performed on a 64-slice CT scanner in the arterial phase. The number of the renal arteries supplying each kidney was evaluated and their diameters were measured. Results: Eighty-six of the right side and 88 of the left side of the 115 kidneys donors had a single renal artery whereas 29 had one or more accessory renal artery (aRA) on the right side and 27 had one or more aRA on the left side. The mean diameter of mRA was 5.4 ± 1.0 mm in kidneys without aRA and 4.6 ± 10 mm in kidneys with aRA on the right side and on the left side the mean diameter of mRA was 5.59 ± 1.12 mm in kidneys without aRA and 4.7 ± 1.2 mm in kidneys with aRA. Discussion and Conclusion: The presence of additional renal arteries is very probable when the main renal artery has a diameter of < 4.15 mm. Kidneys presenting a main renal artery > 5.5 mm very probably do not present additional renal arteries. Hence, the renal artery diameter is a factor which should be considered for predicting the presence of additional renal arteries.



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