Case 44 Abdominal Wall Defect
44.1 Description
Large ventral abdominal hernia: Full-thickness defect traversing all tissue layers of abdominal myofascial wall
Herniation of peritoneal contents with skin directly over bowel
Loss of domain: >50% of abdominal contents lie outside of the abdominal cavity
Rectus abdominus muscles migrate laterally as a consequence
There is no evidence of visceral incarceration
44.2 Work-Up
44.2.1 History
Etiology of defect: Congenital, previous surgery, trauma, and resection
History of hernia repair: Description of attempts, techniques used, presence of mesh, location, type, and concurrent intra abdominal procedures
Duration defect has been present
Associated symptoms: Chronic pain, bowel obstruction, physical mobility, and psychosocial impact
Nutritional status
History of smoking or pulmonary disease
Steroids or immunosuppressive medications and autoimmune disease
44.2.2 Physical Examination
Body mass index (BMI): Weight (kg)/[Height (m)]2
Abdominal wall defect description
Location
Midline or lateral
Upper, middle, or lower abdomen
Tissue defect
Skin and subcutaneous tissue
Myofascial
Full thickness
Size of defect
Condition of existing tissues
Pre-existing incisions
Evidence of loss of domain
44.2.3 Pertinent Imaging or Diagnostic Studies
Computed tomography (CT) of the abdomen with contrast may be helpful to delineate the extent of the defect, the related anatomy, and other relevant information (e.g., bowel adhesions, abscesses)
Pulmonary function testing should be performed if there is pre-existing respiratory compromise or suspicion for loss of domain from a large hernia