Effects of intra-aortic counter pulsation on the mechanical properties of the aortic wall

Intra-aortic counterpulsation (CIAO) determines changes in the vascular properties that can be quantified. Objective: Characterize the effects of CIAO (1:2) on mechanical properties of the aortic wall. Materials and methods: Aortic pressure (mmHg) and diameter (mm), cardiac output (L/mln), and surfa...

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Detalles Bibliográficos
Autores principales:	Camus, J.M., Daniel Santana, B.I.A., Zócalo, Y., Armentano, R., De Forteza, E., Fischer, E.C.
Formato:	JOUR
Lenguaje:	Spanish
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_0032745X_v93_n7_p471_Camus
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_0032745X_v93_n7_p471_Camus
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spelling	todo:paper_0032745X_v93_n7_p471_Camus2023-10-03T14:45:28Z Effects of intra-aortic counter pulsation on the mechanical properties of the aortic wall Camus, J.M. Daniel Santana, B.I.A. Zócalo, Y. Armentano, R. De Forteza, E. Fischer, E.C. Intra-aortic counterpulsation (CIAO) determines changes in the vascular properties that can be quantified. Objective: Characterize the effects of CIAO (1:2) on mechanical properties of the aortic wall. Materials and methods: Aortic pressure (mmHg) and diameter (mm), cardiac output (L/mln), and surface electrocardiogram were registered in 6 anesthetized sheep during control beats, and during CIAO (1:2) both in assisted beats and in unassisted beats. From pressure and diameter signals, aortic local compliance, pulse wave velocity and the arterial wall Incremental elastic modulus were obtained for the three types of registered beats. Results and conclusions: An increment (P < 0.05) of the aortic compliance of the aortic wall was observed from assisted to unassisted beats during CIAO 1:2, and a decrease in the pulse wave velocity and incremental elastic modulus (P < 0.05) were found during CIAO in similar conditions. These results demonstrate that the aortic wall shows biomechanical differences between assisted and unassisted beats during CIAO 1:2. JOUR Spanish info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_0032745X_v93_n7_p471_Camus
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
language	Spanish
orig_language_str_mv	Spanish
description	Intra-aortic counterpulsation (CIAO) determines changes in the vascular properties that can be quantified. Objective: Characterize the effects of CIAO (1:2) on mechanical properties of the aortic wall. Materials and methods: Aortic pressure (mmHg) and diameter (mm), cardiac output (L/mln), and surface electrocardiogram were registered in 6 anesthetized sheep during control beats, and during CIAO (1:2) both in assisted beats and in unassisted beats. From pressure and diameter signals, aortic local compliance, pulse wave velocity and the arterial wall Incremental elastic modulus were obtained for the three types of registered beats. Results and conclusions: An increment (P < 0.05) of the aortic compliance of the aortic wall was observed from assisted to unassisted beats during CIAO 1:2, and a decrease in the pulse wave velocity and incremental elastic modulus (P < 0.05) were found during CIAO in similar conditions. These results demonstrate that the aortic wall shows biomechanical differences between assisted and unassisted beats during CIAO 1:2.
format	JOUR
author	Camus, J.M. Daniel Santana, B.I.A. Zócalo, Y. Armentano, R. De Forteza, E. Fischer, E.C.
spellingShingle	Camus, J.M. Daniel Santana, B.I.A. Zócalo, Y. Armentano, R. De Forteza, E. Fischer, E.C. Effects of intra-aortic counter pulsation on the mechanical properties of the aortic wall
author_facet	Camus, J.M. Daniel Santana, B.I.A. Zócalo, Y. Armentano, R. De Forteza, E. Fischer, E.C.
author_sort	Camus, J.M.
title	Effects of intra-aortic counter pulsation on the mechanical properties of the aortic wall
title_short	Effects of intra-aortic counter pulsation on the mechanical properties of the aortic wall
title_full	Effects of intra-aortic counter pulsation on the mechanical properties of the aortic wall
title_fullStr	Effects of intra-aortic counter pulsation on the mechanical properties of the aortic wall
title_full_unstemmed	Effects of intra-aortic counter pulsation on the mechanical properties of the aortic wall
title_sort	effects of intra-aortic counter pulsation on the mechanical properties of the aortic wall
url	http://hdl.handle.net/20.500.12110/paper_0032745X_v93_n7_p471_Camus
work_keys_str_mv	AT camusjm effectsofintraaorticcounterpulsationonthemechanicalpropertiesoftheaorticwall AT danielsantanabia effectsofintraaorticcounterpulsationonthemechanicalpropertiesoftheaorticwall AT zocaloy effectsofintraaorticcounterpulsationonthemechanicalpropertiesoftheaorticwall AT armentanor effectsofintraaorticcounterpulsationonthemechanicalpropertiesoftheaorticwall AT defortezae effectsofintraaorticcounterpulsationonthemechanicalpropertiesoftheaorticwall AT fischerec effectsofintraaorticcounterpulsationonthemechanicalpropertiesoftheaorticwall
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Effects of intra-aortic counter pulsation on the mechanical properties of the aortic wall

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