Assessment of the Biomechanical Effects of Prophylactic Sacral Dressings on Tissue Loads: A Computational Modeling Analysis.

Assessment of the Biomechanical Effects of Prophylactic Sacral Dressings on Tissue Loads: A Computational Modeling Analysis. Ostomy Wound Manage. 2017 Oct;63(10):48-55 Authors: Levy A, Gefen A Abstract The sacrum is the most susceptible anatomical site for developing pressure injuries, including deep tissue injuries, during supine lying. Prophylactic dressings generally are designed to reduce friction, alleviate internal tissue shear, manage the microclimate, and overall cushion the soft tissues subjected to sustained deformations under the sacrum. Using computational modeling, the authors developed a set of 8 magnetic resonance imaging-based, 3-dimensional finite element models of the buttocks of a healthy 28-year-old woman for comparing the biomechanical effects of different prophylactic sacral dressing designs when used during supine lying on a standard hospital foam mattress. Computer simulation data from model variants incorporating an isotropic (same stiffness in every direction) multilayer compliant dressing, an anisotropic (directionally dependent stiffness properties) multilayer compliant dressing, and a completely stiff dressing were compared to control (no dressing). Specific outcome measures that were compared across these simulation cases were strain energy density (SED) and maximal shear stresses in a volume of interest (VOI) of soft tissues surrounding the sacrum. The SED and shear stress measurements were obtained in ...
Source: Ostomy Wound Management - Category: Surgery Tags: Ostomy Wound Manage Source Type: research