评估伤口敷料水蒸气透过率的新方法。

New method to assess the water vapour permeance of wound coverings.

作者信息

Jonkman M F, Molenaar I, Nieuwenhuis P, Bruin P, Pennings A J

机构信息

Department of Histology, University of Groningen, The Netherlands.

出版信息

Biomaterials. 1988 May;9(3):263-7. doi: 10.1016/0142-9612(88)90095-6.

DOI:10.1016/0142-9612(88)90095-6

PMID:3408799

Abstract

A new method for assessing the permeability to water vapour of wound coverings is presented, using the evaporimeter developed by Nilsson. This new method combines the water vapour transmission rate (WVTR) and the vapour pressure difference across a wound covering in one absolute measure: the water vapour permeance (WVP). The WVP of a wound covering is the steady flow (g) of water vapour per unit (m2) area of surface in unit (h) time induced by unit (kPa) vapour pressure difference, g.m-2.h-1.kPa-1. Since the WVP of a wound covering is a more accurate measure for the permeability than the WVTR is, it facilitates the prediction of the water exchange of a wound covering in clinical situations.

摘要

本文介绍了一种评估伤口敷料水蒸气渗透性的新方法，该方法使用了尼尔森开发的蒸发仪。这种新方法将水蒸气透过率（WVTR）和伤口敷料两侧的蒸气压差结合为一个绝对测量值：水蒸气透过系数（WVP）。伤口敷料的WVP是指在单位（kPa）蒸气压差作用下，单位（m²）面积表面在单位（h）时间内水蒸气的稳定流量（g），单位为g·m⁻²·h⁻¹·kPa⁻¹。由于伤口敷料的WVP比WVTR更能准确地衡量渗透性，因此有助于预测临床情况下伤口敷料的水分交换情况。