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A Preliminary Assessment of Abdominal Wall Tension in Patients Undergoing Retromuscular Hernia Repair.
Surgical Technology International 2019 May 16
A common technique for ventral and incisional hernia repair is the retrorectus repair (Rives-Stoppa). The posterior rectus sheath is incised bilaterally, and mesh is placed retromuscularly. There is little information on how this component separation technique affects abdominal wall tension. We evaluated abdominal wall tension in patients undergoing retrorectus repair of abdominal wall hernias. Patients undergoing retrorectus repair of their ventral hernias were enrolled in a prospective, Institutional Review Board-approved protocol to measure abdominal wall tension from 8/1/2013 to 8/2/2017. Demographic information and operative details were documented. Abdominal wall tensions were measured using scales attached to Kocher clamps that were clamped to the fascia and brought together in the midline. Measurements were made before and after incising the posterior rectus sheaths. Data were analyzed with a repeated measures analysis of variance (ANOVA), and differences between individual groups were analyzed by least square differences. Forty-five patients had tension measurements. Average age was 58 years (range 29-81)-78% Caucasian, 51% female, an average body mass index (BMI) of 35 kg/m2 (range 20-62), and 38% recurrent hernias. The average hernia defect was 121.9 cm2, and the average mesh size was 607.8 cm2. There was a significant reduction in tension after bilateral posterior rectus sheath incision (3.1 lbs vs. 5.6 lbs, p<0.0001). In this evaluation, abdominal wall tension measurements are shown to be a feasible adjunct during open hernia repair with retrorectus repair. Transection of the posterior rectus sheath decreases tension during hernia repair and may help guide surgeons regarding when to use this procedure.
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