CMI can be treated by removal of infected mesh; simultaneous mesh replacement prevents hernia recurrence and has an acceptable incidence of post-operative acute infection. Standard polypropylene mesh is a suitable material to be used in the infected surgical field as an onlay graft.
PURPOSE:To compare the inflammatory response of three different meshes on abdominal hernia repair in an experimental model of incisional hernia.
METHODS:Median fascial incision and skin synthesis was performed on 30 Wistar rats. After 21 days, abdominal hernia developed was corrected as follows: 1) No mesh; 2) Polypropylene mesh; and, 3) Ultrapro ® mesh. After 21 days, the mesh and surrounding tissue were submitted to macroscopic (presence of adhesions, mesh retraction), microscopic analysis to identify and quantify the inflammatory and fibrotic response using a score based on a predefined scale of 0-3 degrees, evaluating infiltration of macrophages, giant cells, neutrophils and lymphocytes.
RESULTS:No significant difference was seen among groups in adherences, fibrosis, giant cells, macrophages, neutrophils or lymphocytes (p>0.05). Mesh shrinkage was observed in all groups, but also no difference was observed between polypropylene and Ultrapro mesh (7.0±9.9 vs. 7.4±10.1, respectively, p=0.967). Post-operatory complications included fistula, abscess, dehiscence, serohematic collection and reherniation, but with no difference among groups (p=0.363).
CONCLUSION:There is no difference between polypropylene (high-density) and Ultrapro ® (low-density) meshes at 21 days after surgery in extraperitoneal use in rats, comparing inflammatory response, mesh shortening, adhesions or complications.
Synthetic mesh replacement in patients with active Staphylococcus aureus infection has an acceptable incidence of postoperative wound infection and prevents hernia recurrence. Large-pore polypropylene mesh is a suitable material to be used in the infected surgical field as an onlay graft.
HighlightsThe rarity of these finding as a important differential diagnosis in groin and femoral hernia repair.Diagnosis made at operative field with possibility of preoperative diagnosis with duplex ultrasonography.The treatment well illustrated in figures by the simple ligation of the feeding vessel.Great review about the venous aneurysms and the treatment options.
Background: The main principle of abdominal incisional hernia repair is to restore the anatomical and physiological integrity of the abdominal wall by reconstructing the midline. Ideally, midline structural support is restored by midline approximation of local musculo-aponeurotic tissues. Approximation of these tissues without tension on the suture line will restore the elasticity and flexibility of the abdominal wall. However, 30% to 50% of defects larger than 6 cm recur after primary closure, because of the tension on the suture line. Insertion of an alloplastic material to decrease or eliminate tension on the suture line can reduce the incidence of recurrence to 10% or less. But inorganic prosthetic materials have been associated with a high risk of complications such as protrusion, extrusion, infection, and intestinal fistulization. With the availability of biological materials, surgeons are increasingly using these materials for effective surgical management of abdominal incisional hernia The aim of this study was to determine the feasibility and efficacy of repairing large abdominal incisional hernias by reconstructing the midline using bilateral abdominis rectus muscle sheath (ARS) relaxing incisions and a biological material onlay. Methods: Between January 2002 and December 2009, 104 patients underwent repair oflarge incisional hernias at 2 community hospitals. After replacement of hernia sac contents into the peritoneal cavity, a relaxing incision was made in the ARS bilaterally. Then the midline was closed primarily. The biological material was onlaid and sutured to the lateral edges of the relaxed ARS. Main outcome measures were postoperative complications and hernia recurrence. Results: Median age 61 years (range, 39-86) years. Body mass index was 34 (range, 23-44). Of the 104 patients, 37 had undergone I or more previous repairs. In 19 patients (18%), mesh had been used. In 14 patients the mesh had been placed as a sub lay, and in 5 patients the mesh had been placed laparoscopically. We removed the mesh in all 19 cases. Size of the defect was 195 (range, 150-420) cm 2 • Median operation time was 125 (range, 75-255) minutes. Four patients (3.8%) had a large wound hematoma that required operative drainage. Four (3.8%) patients developed skin necrosis at the edge of the wound, exposing the biological material; they were treated conservatively with dressings and oral antibiotics and discharged 9 days after surgery. Three (2.8%) developed urinary tract infection, which was treated successfully with appropriate oral antibiotics. One (0.9%) developed pneumonia postoperatively; this was successfully treated with appropriate antibiotics and the patient was discharged 10 days after surgery. Wound seroma occurred in 57 (55%) patients. In all cases, the seroma was suspected by physical examination and both confirmed and managed by fine needle aspiration, with or without sonography. The median time between surgery and diagnosis of seroma was 19 days (range, 12-42). The mean time to complete resolution was 52 days...
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