Abstract

The incidence of inferior epigastric artery (IEA) injury is 0.2-2%. The aim of this study was to trace the position and course of the inferior epigastric artery in the anterior abdominal wall above the inguinal ligament at three important landmarks, i.e., at the mid-inguinal point, Anterior Superior Iliac Spine (ASIS) and umbilicus in abdominal CT Angiograms. The study also correlates the relationship of body build and the position of the inferior epigastric artery. In 50 CT Abdominal angiograms, the course of the inferior epigastric artery was traced and distance between the artery and midline was measured at the above landmarks using measurement tool on the picture archival and communication system. The measurements were analyzed using SPSS version 16 and expressed as mean and standard deviation. Mann-Whitney test was used to compare the mean values and ratios in males and females. Linear regression was done to derive formulas by which the position of the inferior epigastric artery could be found. The mean distance of the inferior epigastric artery from the midline was 5.17±0.93cm at the level of mid-inguinal point, 4.57±1.05cm at the level of ASIS and 5.27±1.17cm at the level of umbilicus. There was a definitive predictive pattern in the course of the artery as seen in correlation and regression analysis. The security distance for safe trocar placement was 6cm at the level of ASIS and 9cm at the level of umbilicus. Preoperative IEA assessment is helpful in reducing injuries to IEA.

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