Prophylactic Sub-lay Non-absorbable Mesh Following Midline Laparotomy: PROMETHEUS (PROphylactic Mesh Trial Evaluation UltraSound)

Sub-lay mesh supported closure A 4 cm space is created between posterior rectus sheath and rectus muscle, widening 2 cm at each side of midline. Both posterior rectus sheath edges are sutured using a running slowly absorbable suture. Above arcuate line, posterior layer was performed suturing peritoneum and posterior rectus sheath; below arcuate line, posterior layer was performed suturing peritoneum and trasversalis fascia. Anterior layer was performed suturing anterior rectus sheath. A suture length to wound length ratio of 4:1 is recommended. A 4-cm Parietex Progrip Mesh strip was placed between the posterior rectus sheath and rectus muscle with an overlap of at least 2 cm at each side, suture less. In laparotomies \>20 cm two stripes of 15 cm each were designed. The midline anterior rectus sheath was closed using a running slowly absorbable suture, covering the mesh. A suture length to wound length ratio of 4:1 is recommended.