Prospective cohort study on mesh shrinkage measured with MRI after laparoscopic ventral hernia repair with an intraperitoneal iron oxide-loaded PVDF mesh.

ABSTRACT: BACKGROUND:Current data on shrinkage of intraperitoneal meshes come mainly from animal studies. High-quality human data in prospective studies are scarce. METHODS:We used the ability to visualize intraperitoneal PVDF meshes enhanced with iron particles (DynaMesh IPOM visible) with magnetic resonance imaging (MRI) to determine the amount of shrinkage between 1 and 13 months postoperatively. All measurements of the width, length, and surface area of the mesh were performed with a standardized methodology independently by four radiologists blinded for the timing of the MRI. RESULTS:Of the 15 patients undergoing laparoscopic ventral hernia repair, 13 patients received an MRI both at 1 and at 13 months. Evaluation of inter-rater reliability between the radiologists showed intra-class correlations of 0.95 (95% CI 0.92-0.98) for the width, 0.96 (95% CI 0.93-0.98) for the length, and 0.99 (90% CI 0.99-1.00) for the surface area of the mesh. The change between measurement at implantation and 1-month MRI was -?0.7 cm (P?=?0.023; -?3.6%) for the width and -?1.9 cm (P?=?0.001; -?7.2%) for the length. The change between 1 and 13 months was -?0.06 cm (P?=?0.74; shrinkage?=?0.3%) for the width, -?0.12 cm (P?=?0.56; shrinkage?=?0.5%) for the length, and -?4.0 cm2 (P?=?0.20; shrinkage?=?1.0%) for the surface area of the mesh. CONCLUSION:There is excellent inter-rater reliability between radiologists when measuring width, length, and surface area of visible intraperitoneal PVDF mesh with MRI. There is no significant shrinkage between 1 and 13 months of intraperitoneal PVDF mesh after laparoscopic ventral hernia repair.

SUBMITTER: Muysoms F 

PROVIDER: S-EPMC5956096 | biostudies-literature | 2018 Jun

REPOSITORIES: biostudies-literature