Authors:	Roth, Klaus Edgar Mandryka, Boris Maier, Gerrit Steffen Maus, Uwe Berres, Manfred Rompe, Jan Dirk Bodem, Friedrich
Title:	In-vivo analysis of epicutaneous pressure distribution beneath a femoral tourniquet : an observational study
Online publication date:	14-Jun-2022
Year of first publication:	2015
Language:	english
Abstract:	Background Compression of the tissue beneath tourniquets used in limb surgery is associated with varying degrees of soft tissue damage. The interaction between fluids and applied pressure seems to play an important role in the appearance of skin lesions. The extent of the transfer of force between the tourniquet and the skin, however, has yet to be studied. The aim of the present study was to quantify in-vivo the transfer of pressure between a tourniquet and the skin of the thigh. Methods Pressure under the tourniquet was measured using sensors in 25 consecutive patients over the course of elective surgical procedures. Linear mixed modeling was used to assess the homogeneity of the distribution of pressure around the circumference of the limb, variation in pressure values over time, and the influence of limb circumference and the Body-Mass-Index (BMI) on pressure transfer. Results Mean pressure on the skin was significantly lower than the inner pressure of the cuff (5.95%, 20.5 ± 9.36 mmHg, p < 0.01). There was a discrete, but significant (p < 0.001) increase in pressure within the first twenty minutes after inflation. Sensors located in the area of overlap of the cuff registered significantly higher pressure values (p < 0.01). BMI and leg circumference had no influence on the transfer of pressure to the surface of the skin (p = 0.88 and p = 0.51). Conclusions Pressure transfer around the circumference of the limb was distributed inhomogeneously. The measurement series revealed a global pressure drop compared to the initial pressure of the cuff. No relationship could be demonstrated between the pressure transferred to the skin and the BMI or limb circumference.
DDC:	610 Medizin 610 Medical sciences
Institution:	Johannes Gutenberg-Universität Mainz
Department:	FB 04 Medizin
Place:	Mainz
ROR:	https://ror.org/023b0x485
DOI:	http://doi.org/10.25358/openscience-7146
Version:	Published version
Publication type:	Zeitschriftenaufsatz
License:	CC BY
Information on rights of use:	https://creativecommons.org/licenses/by/4.0/
Journal:	BMC musculoskeletal disorders 16
Pages or article number:	Art. 1
Publisher:	BioMed Central
Publisher place:	London
Issue date:	2015
ISSN:	1471-2474
Publisher URL:	http://dx.doi.org/10.1186/s12891-015-0454-0
Publisher DOI:	10.1186/s12891-015-0454-0
Appears in collections:	DFG-OA-Publizieren (2012 - 2017)