Effects of local pressure on cutaneous blood flow in pigs
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Revista do Colégio Brasileiro de Cirurgiões |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69912017000500498 |
Resumo: | ABSTRACT Objective: to evaluate the effects of increasing pressures on the cutaneous blood flow in the skin of pigs. Methods: we conducted an experimental study in pigs submitted to subcutaneous magnetic implants (n=30). After healing, were applied external magnets with varying magnetic forces to the skin, generating compression. We evaluated the cutaneous circulation of the skin under compression by the Laser Speckle Contrast Imaging (LSCI) technique. We measured the depth of the implants by ultrasonography, and applied computational simulations to the calculation of the different pressure values, considering the different distances between implants and external magnets. Results: nineteen implants presented complications. The remaining 11 were submitted to different magnetic compression forces and perfusion analysis. Two linear regression models showed an inverse correlation between exerted pressure and cutaneous perfusion, with significant variation, mainly in the initial pressure increases, of up to 20mmHg. Conclusion: The main reduction in cutaneous blood flow resulted from initial increases of up to 20 mmHg. The results suggest that tissue ischemia can occur even in low-pressure regimes, which could contribute to the appearance of skin lesions, particularly ulcers related to medical devices. |
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Revista do Colégio Brasileiro de Cirurgiões |
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Effects of local pressure on cutaneous blood flow in pigsPressure UlcerSkinMicrocirculationRegional Blood FlowModels, AnimalSwineABSTRACT Objective: to evaluate the effects of increasing pressures on the cutaneous blood flow in the skin of pigs. Methods: we conducted an experimental study in pigs submitted to subcutaneous magnetic implants (n=30). After healing, were applied external magnets with varying magnetic forces to the skin, generating compression. We evaluated the cutaneous circulation of the skin under compression by the Laser Speckle Contrast Imaging (LSCI) technique. We measured the depth of the implants by ultrasonography, and applied computational simulations to the calculation of the different pressure values, considering the different distances between implants and external magnets. Results: nineteen implants presented complications. The remaining 11 were submitted to different magnetic compression forces and perfusion analysis. Two linear regression models showed an inverse correlation between exerted pressure and cutaneous perfusion, with significant variation, mainly in the initial pressure increases, of up to 20mmHg. Conclusion: The main reduction in cutaneous blood flow resulted from initial increases of up to 20 mmHg. The results suggest that tissue ischemia can occur even in low-pressure regimes, which could contribute to the appearance of skin lesions, particularly ulcers related to medical devices.Colégio Brasileiro de Cirurgiões2017-10-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69912017000500498Revista do Colégio Brasileiro de Cirurgiões v.44 n.5 2017reponame:Revista do Colégio Brasileiro de Cirurgiõesinstname:Colégio Brasileiro de Cirurgiões (CBC)instacron:CBC10.1590/0100-69912017005012info:eu-repo/semantics/openAccessVaena,Michel Luciano Holger ToledanoSinnecker,João PauloPinto,Bruno BenedettiNeves,Mario Fritsch TorosSerra-Guimarães,FernandoMarques,Ruy Garciaeng2018-03-08T00:00:00Zoai:scielo:S0100-69912017000500498Revistahttp://www.scielo.br/rcbcONGhttps://old.scielo.br/oai/scielo-oai.php||revistacbc@cbc.org.br1809-45460100-6991opendoar:2018-03-08T00:00Revista do Colégio Brasileiro de Cirurgiões - Colégio Brasileiro de Cirurgiões (CBC)false |
dc.title.none.fl_str_mv |
Effects of local pressure on cutaneous blood flow in pigs |
title |
Effects of local pressure on cutaneous blood flow in pigs |
spellingShingle |
Effects of local pressure on cutaneous blood flow in pigs Vaena,Michel Luciano Holger Toledano Pressure Ulcer Skin Microcirculation Regional Blood Flow Models, Animal Swine |
title_short |
Effects of local pressure on cutaneous blood flow in pigs |
title_full |
Effects of local pressure on cutaneous blood flow in pigs |
title_fullStr |
Effects of local pressure on cutaneous blood flow in pigs |
title_full_unstemmed |
Effects of local pressure on cutaneous blood flow in pigs |
title_sort |
Effects of local pressure on cutaneous blood flow in pigs |
author |
Vaena,Michel Luciano Holger Toledano |
author_facet |
Vaena,Michel Luciano Holger Toledano Sinnecker,João Paulo Pinto,Bruno Benedetti Neves,Mario Fritsch Toros Serra-Guimarães,Fernando Marques,Ruy Garcia |
author_role |
author |
author2 |
Sinnecker,João Paulo Pinto,Bruno Benedetti Neves,Mario Fritsch Toros Serra-Guimarães,Fernando Marques,Ruy Garcia |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Vaena,Michel Luciano Holger Toledano Sinnecker,João Paulo Pinto,Bruno Benedetti Neves,Mario Fritsch Toros Serra-Guimarães,Fernando Marques,Ruy Garcia |
dc.subject.por.fl_str_mv |
Pressure Ulcer Skin Microcirculation Regional Blood Flow Models, Animal Swine |
topic |
Pressure Ulcer Skin Microcirculation Regional Blood Flow Models, Animal Swine |
description |
ABSTRACT Objective: to evaluate the effects of increasing pressures on the cutaneous blood flow in the skin of pigs. Methods: we conducted an experimental study in pigs submitted to subcutaneous magnetic implants (n=30). After healing, were applied external magnets with varying magnetic forces to the skin, generating compression. We evaluated the cutaneous circulation of the skin under compression by the Laser Speckle Contrast Imaging (LSCI) technique. We measured the depth of the implants by ultrasonography, and applied computational simulations to the calculation of the different pressure values, considering the different distances between implants and external magnets. Results: nineteen implants presented complications. The remaining 11 were submitted to different magnetic compression forces and perfusion analysis. Two linear regression models showed an inverse correlation between exerted pressure and cutaneous perfusion, with significant variation, mainly in the initial pressure increases, of up to 20mmHg. Conclusion: The main reduction in cutaneous blood flow resulted from initial increases of up to 20 mmHg. The results suggest that tissue ischemia can occur even in low-pressure regimes, which could contribute to the appearance of skin lesions, particularly ulcers related to medical devices. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-10-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69912017000500498 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69912017000500498 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/0100-69912017005012 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Colégio Brasileiro de Cirurgiões |
publisher.none.fl_str_mv |
Colégio Brasileiro de Cirurgiões |
dc.source.none.fl_str_mv |
Revista do Colégio Brasileiro de Cirurgiões v.44 n.5 2017 reponame:Revista do Colégio Brasileiro de Cirurgiões instname:Colégio Brasileiro de Cirurgiões (CBC) instacron:CBC |
instname_str |
Colégio Brasileiro de Cirurgiões (CBC) |
instacron_str |
CBC |
institution |
CBC |
reponame_str |
Revista do Colégio Brasileiro de Cirurgiões |
collection |
Revista do Colégio Brasileiro de Cirurgiões |
repository.name.fl_str_mv |
Revista do Colégio Brasileiro de Cirurgiões - Colégio Brasileiro de Cirurgiões (CBC) |
repository.mail.fl_str_mv |
||revistacbc@cbc.org.br |
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1754209214044045312 |