Level 4	Laparoscopic ventral and incisional hernia repair can be performed with the use of ePTFE, PVDF, or composite meshes and is appropriate for use within the abdominal cavity
Level 5	The results of experimental studies on large animals with LVHR and comparison of meshes show advantages of lightweight PP meshes vs. heavy-weight meshes, ePTFE and composite meshes vs. pure PP meshes, composite meshes vs. ePTFE meshes, and composite meshes vs. composite meshes
	After laparoscopic incisional hernia repair, adhesions will develop in at least two-thirds of the patients. Adhesions cannot be completely prevented by any of the materials used as intraperitoneal onlay meshes (IPOM), and consequently adhesions must expected in most patients
	Materials for use within the abdominal cavity can be made of ePTFE, PVDF, polyester, or PP; the latter needs an additional barrier to prevent any direct contact with the intestine (composite meshes). Unprotected porous PP and polyester meshes, which are placed in direct contact to the bowel, induce a higher risk for bowel erosion and/or bowel resection at subsequent surgery
	A low recurrence rate can be achieved if adequate technique is applied with all available materials
	Filmlike materials tend to show encapsulation and sometimes extensive shrinkage and require a method of permanent fixation
	Enterocutaneous fistulas after LVHR are rare events, particularly with ePTFE
	Experimental studies in animals showed contradictory results and are not strictly comparable
	Tissue integration of the various devices with different design characteristics differ and require different fixation techniques
	There is no ideal mesh, but every mesh has to be considered as a compromise with regard to strength, elasticity, tissue ingrowth, and cellular response, with its specific advantages and disadvantages
	Most devices demonstrate a lack of stretchability, so that folding or wrinkling of the fixed mesh after release of the pneumoperitoneum may be unavoidable