Effects of transient change in carotid arterial stiffness on arterial baroreflex during mild orthostatic stimulation

Abstract Stiffening of central conduit arteries —areas where the mechanoreceptors are embedded (e.g., ascending aorta and carotid artery) — is considered to be associated with the impaired baroreflex control in response to hypotensive stress. Arterial stiffness is modulated by vascular tone transien...
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Autor*in:	Sugawara, Jun [verfasserIn] Willie, Christopher K. Miyazawa, Taiki Komine, Hidehiko Ainsle, Philip N. Ogoh, Shigehiko

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2012

Schlagwörter:	Arterial compliance Carotid-vagal baroreflex Head-up tilt

Anmerkung:	© Association for Research into Arterial Structure and Physiology. Published by Elsevier B.V. All rights reserved 2012

Übergeordnetes Werk:	Enthalten in: Artery research - Amsterdam : Atlantis Press, 2006, 6(2012), 3 vom: 07. Juni, Seite 130-135
Übergeordnetes Werk:	volume:6 ; year:2012 ; number:3 ; day:07 ; month:06 ; pages:130-135

Links:	Volltext

DOI / URN:	10.1016/j.artres.2012.05.002

Katalog-ID:	SPR054717574

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520			\|a Abstract Stiffening of central conduit arteries —areas where the mechanoreceptors are embedded (e.g., ascending aorta and carotid artery) — is considered to be associated with the impaired baroreflex control in response to hypotensive stress. Arterial stiffness is modulated by vascular tone transiently and dynamically, however, it is unknown whether a transient change in the carotid artery stiffness influences the cardiac baroreflex response to a rapid hypotension. We measured (n = 11) carotid arterial stiffness (via concurrent applanation tonometory and ultrasound imaging) at supine rest and during 20-degree head-up tilt (HUT). To evaluate the cardiac baroreflex response, acute hypotension was evoked by releasing bilateral thigh cuffs after 3 min of suprasystolic resting ischemia at each posture; cardiac baroreflex sensitivity (e.g., change in heart rate for a given change in mean arterial pressure, ΔHR/ΔMAP) and latency (e.g., the time to peak HR response) was estimated. Carotid β-stiffness index, a measure of arterial stiffness, was reduced by 14% during HUT (P < 0.05 vs. supine position). Although cardiac baroreflex responses were unaltered, the within-group biological variability in the cardiac baroreflex sensitivity and latency from the supine to HUT was correlated with the corresponding changes in carotid arterial stiffness (r = 0.66 and r = 0.64, respectively, both P < 0.05). These findings suggest that a transient change in carotid arterial stiffness, at least in part, influences changes in the cardiac baroreflex response to a rapid hypotension.
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allfields	10.1016/j.artres.2012.05.002 doi (DE-627)SPR054717574 (SPR)j.artres.2012.05.002-e DE-627 ger DE-627 rakwb eng Sugawara, Jun verfasserin aut Effects of transient change in carotid arterial stiffness on arterial baroreflex during mild orthostatic stimulation 2012 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Association for Research into Arterial Structure and Physiology. Published by Elsevier B.V. All rights reserved 2012 Abstract Stiffening of central conduit arteries —areas where the mechanoreceptors are embedded (e.g., ascending aorta and carotid artery) — is considered to be associated with the impaired baroreflex control in response to hypotensive stress. Arterial stiffness is modulated by vascular tone transiently and dynamically, however, it is unknown whether a transient change in the carotid artery stiffness influences the cardiac baroreflex response to a rapid hypotension. We measured (n = 11) carotid arterial stiffness (via concurrent applanation tonometory and ultrasound imaging) at supine rest and during 20-degree head-up tilt (HUT). To evaluate the cardiac baroreflex response, acute hypotension was evoked by releasing bilateral thigh cuffs after 3 min of suprasystolic resting ischemia at each posture; cardiac baroreflex sensitivity (e.g., change in heart rate for a given change in mean arterial pressure, ΔHR/ΔMAP) and latency (e.g., the time to peak HR response) was estimated. Carotid β-stiffness index, a measure of arterial stiffness, was reduced by 14% during HUT (P < 0.05 vs. supine position). Although cardiac baroreflex responses were unaltered, the within-group biological variability in the cardiac baroreflex sensitivity and latency from the supine to HUT was correlated with the corresponding changes in carotid arterial stiffness (r = 0.66 and r = 0.64, respectively, both P < 0.05). These findings suggest that a transient change in carotid arterial stiffness, at least in part, influences changes in the cardiac baroreflex response to a rapid hypotension. Arterial compliance (dpeaa)DE-He213 Carotid-vagal (dpeaa)DE-He213 baroreflex (dpeaa)DE-He213 Head-up tilt (dpeaa)DE-He213 Willie, Christopher K. aut Miyazawa, Taiki aut Komine, Hidehiko aut Ainsle, Philip N. aut Ogoh, Shigehiko aut Enthalten in Artery research Amsterdam : Atlantis Press, 2006 6(2012), 3 vom: 07. Juni, Seite 130-135 (DE-627)534057489 (DE-600)2364789-9 1876-4401 nnns volume:6 year:2012 number:3 day:07 month:06 pages:130-135 https://dx.doi.org/10.1016/j.artres.2012.05.002 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2004 GBV_ILN_2014 GBV_ILN_2068 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 6 2012 3 07 06 130-135
spelling	10.1016/j.artres.2012.05.002 doi (DE-627)SPR054717574 (SPR)j.artres.2012.05.002-e DE-627 ger DE-627 rakwb eng Sugawara, Jun verfasserin aut Effects of transient change in carotid arterial stiffness on arterial baroreflex during mild orthostatic stimulation 2012 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Association for Research into Arterial Structure and Physiology. Published by Elsevier B.V. All rights reserved 2012 Abstract Stiffening of central conduit arteries —areas where the mechanoreceptors are embedded (e.g., ascending aorta and carotid artery) — is considered to be associated with the impaired baroreflex control in response to hypotensive stress. Arterial stiffness is modulated by vascular tone transiently and dynamically, however, it is unknown whether a transient change in the carotid artery stiffness influences the cardiac baroreflex response to a rapid hypotension. We measured (n = 11) carotid arterial stiffness (via concurrent applanation tonometory and ultrasound imaging) at supine rest and during 20-degree head-up tilt (HUT). To evaluate the cardiac baroreflex response, acute hypotension was evoked by releasing bilateral thigh cuffs after 3 min of suprasystolic resting ischemia at each posture; cardiac baroreflex sensitivity (e.g., change in heart rate for a given change in mean arterial pressure, ΔHR/ΔMAP) and latency (e.g., the time to peak HR response) was estimated. Carotid β-stiffness index, a measure of arterial stiffness, was reduced by 14% during HUT (P < 0.05 vs. supine position). Although cardiac baroreflex responses were unaltered, the within-group biological variability in the cardiac baroreflex sensitivity and latency from the supine to HUT was correlated with the corresponding changes in carotid arterial stiffness (r = 0.66 and r = 0.64, respectively, both P < 0.05). These findings suggest that a transient change in carotid arterial stiffness, at least in part, influences changes in the cardiac baroreflex response to a rapid hypotension. Arterial compliance (dpeaa)DE-He213 Carotid-vagal (dpeaa)DE-He213 baroreflex (dpeaa)DE-He213 Head-up tilt (dpeaa)DE-He213 Willie, Christopher K. aut Miyazawa, Taiki aut Komine, Hidehiko aut Ainsle, Philip N. aut Ogoh, Shigehiko aut Enthalten in Artery research Amsterdam : Atlantis Press, 2006 6(2012), 3 vom: 07. Juni, Seite 130-135 (DE-627)534057489 (DE-600)2364789-9 1876-4401 nnns volume:6 year:2012 number:3 day:07 month:06 pages:130-135 https://dx.doi.org/10.1016/j.artres.2012.05.002 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2004 GBV_ILN_2014 GBV_ILN_2068 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 6 2012 3 07 06 130-135
allfields_unstemmed	10.1016/j.artres.2012.05.002 doi (DE-627)SPR054717574 (SPR)j.artres.2012.05.002-e DE-627 ger DE-627 rakwb eng Sugawara, Jun verfasserin aut Effects of transient change in carotid arterial stiffness on arterial baroreflex during mild orthostatic stimulation 2012 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Association for Research into Arterial Structure and Physiology. Published by Elsevier B.V. All rights reserved 2012 Abstract Stiffening of central conduit arteries —areas where the mechanoreceptors are embedded (e.g., ascending aorta and carotid artery) — is considered to be associated with the impaired baroreflex control in response to hypotensive stress. Arterial stiffness is modulated by vascular tone transiently and dynamically, however, it is unknown whether a transient change in the carotid artery stiffness influences the cardiac baroreflex response to a rapid hypotension. We measured (n = 11) carotid arterial stiffness (via concurrent applanation tonometory and ultrasound imaging) at supine rest and during 20-degree head-up tilt (HUT). To evaluate the cardiac baroreflex response, acute hypotension was evoked by releasing bilateral thigh cuffs after 3 min of suprasystolic resting ischemia at each posture; cardiac baroreflex sensitivity (e.g., change in heart rate for a given change in mean arterial pressure, ΔHR/ΔMAP) and latency (e.g., the time to peak HR response) was estimated. Carotid β-stiffness index, a measure of arterial stiffness, was reduced by 14% during HUT (P < 0.05 vs. supine position). Although cardiac baroreflex responses were unaltered, the within-group biological variability in the cardiac baroreflex sensitivity and latency from the supine to HUT was correlated with the corresponding changes in carotid arterial stiffness (r = 0.66 and r = 0.64, respectively, both P < 0.05). These findings suggest that a transient change in carotid arterial stiffness, at least in part, influences changes in the cardiac baroreflex response to a rapid hypotension. Arterial compliance (dpeaa)DE-He213 Carotid-vagal (dpeaa)DE-He213 baroreflex (dpeaa)DE-He213 Head-up tilt (dpeaa)DE-He213 Willie, Christopher K. aut Miyazawa, Taiki aut Komine, Hidehiko aut Ainsle, Philip N. aut Ogoh, Shigehiko aut Enthalten in Artery research Amsterdam : Atlantis Press, 2006 6(2012), 3 vom: 07. Juni, Seite 130-135 (DE-627)534057489 (DE-600)2364789-9 1876-4401 nnns volume:6 year:2012 number:3 day:07 month:06 pages:130-135 https://dx.doi.org/10.1016/j.artres.2012.05.002 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2004 GBV_ILN_2014 GBV_ILN_2068 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 6 2012 3 07 06 130-135
allfieldsGer	10.1016/j.artres.2012.05.002 doi (DE-627)SPR054717574 (SPR)j.artres.2012.05.002-e DE-627 ger DE-627 rakwb eng Sugawara, Jun verfasserin aut Effects of transient change in carotid arterial stiffness on arterial baroreflex during mild orthostatic stimulation 2012 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Association for Research into Arterial Structure and Physiology. Published by Elsevier B.V. All rights reserved 2012 Abstract Stiffening of central conduit arteries —areas where the mechanoreceptors are embedded (e.g., ascending aorta and carotid artery) — is considered to be associated with the impaired baroreflex control in response to hypotensive stress. Arterial stiffness is modulated by vascular tone transiently and dynamically, however, it is unknown whether a transient change in the carotid artery stiffness influences the cardiac baroreflex response to a rapid hypotension. We measured (n = 11) carotid arterial stiffness (via concurrent applanation tonometory and ultrasound imaging) at supine rest and during 20-degree head-up tilt (HUT). To evaluate the cardiac baroreflex response, acute hypotension was evoked by releasing bilateral thigh cuffs after 3 min of suprasystolic resting ischemia at each posture; cardiac baroreflex sensitivity (e.g., change in heart rate for a given change in mean arterial pressure, ΔHR/ΔMAP) and latency (e.g., the time to peak HR response) was estimated. Carotid β-stiffness index, a measure of arterial stiffness, was reduced by 14% during HUT (P < 0.05 vs. supine position). Although cardiac baroreflex responses were unaltered, the within-group biological variability in the cardiac baroreflex sensitivity and latency from the supine to HUT was correlated with the corresponding changes in carotid arterial stiffness (r = 0.66 and r = 0.64, respectively, both P < 0.05). These findings suggest that a transient change in carotid arterial stiffness, at least in part, influences changes in the cardiac baroreflex response to a rapid hypotension. Arterial compliance (dpeaa)DE-He213 Carotid-vagal (dpeaa)DE-He213 baroreflex (dpeaa)DE-He213 Head-up tilt (dpeaa)DE-He213 Willie, Christopher K. aut Miyazawa, Taiki aut Komine, Hidehiko aut Ainsle, Philip N. aut Ogoh, Shigehiko aut Enthalten in Artery research Amsterdam : Atlantis Press, 2006 6(2012), 3 vom: 07. Juni, Seite 130-135 (DE-627)534057489 (DE-600)2364789-9 1876-4401 nnns volume:6 year:2012 number:3 day:07 month:06 pages:130-135 https://dx.doi.org/10.1016/j.artres.2012.05.002 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2004 GBV_ILN_2014 GBV_ILN_2068 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 6 2012 3 07 06 130-135
allfieldsSound	10.1016/j.artres.2012.05.002 doi (DE-627)SPR054717574 (SPR)j.artres.2012.05.002-e DE-627 ger DE-627 rakwb eng Sugawara, Jun verfasserin aut Effects of transient change in carotid arterial stiffness on arterial baroreflex during mild orthostatic stimulation 2012 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Association for Research into Arterial Structure and Physiology. Published by Elsevier B.V. All rights reserved 2012 Abstract Stiffening of central conduit arteries —areas where the mechanoreceptors are embedded (e.g., ascending aorta and carotid artery) — is considered to be associated with the impaired baroreflex control in response to hypotensive stress. Arterial stiffness is modulated by vascular tone transiently and dynamically, however, it is unknown whether a transient change in the carotid artery stiffness influences the cardiac baroreflex response to a rapid hypotension. We measured (n = 11) carotid arterial stiffness (via concurrent applanation tonometory and ultrasound imaging) at supine rest and during 20-degree head-up tilt (HUT). To evaluate the cardiac baroreflex response, acute hypotension was evoked by releasing bilateral thigh cuffs after 3 min of suprasystolic resting ischemia at each posture; cardiac baroreflex sensitivity (e.g., change in heart rate for a given change in mean arterial pressure, ΔHR/ΔMAP) and latency (e.g., the time to peak HR response) was estimated. Carotid β-stiffness index, a measure of arterial stiffness, was reduced by 14% during HUT (P < 0.05 vs. supine position). Although cardiac baroreflex responses were unaltered, the within-group biological variability in the cardiac baroreflex sensitivity and latency from the supine to HUT was correlated with the corresponding changes in carotid arterial stiffness (r = 0.66 and r = 0.64, respectively, both P < 0.05). These findings suggest that a transient change in carotid arterial stiffness, at least in part, influences changes in the cardiac baroreflex response to a rapid hypotension. Arterial compliance (dpeaa)DE-He213 Carotid-vagal (dpeaa)DE-He213 baroreflex (dpeaa)DE-He213 Head-up tilt (dpeaa)DE-He213 Willie, Christopher K. aut Miyazawa, Taiki aut Komine, Hidehiko aut Ainsle, Philip N. aut Ogoh, Shigehiko aut Enthalten in Artery research Amsterdam : Atlantis Press, 2006 6(2012), 3 vom: 07. Juni, Seite 130-135 (DE-627)534057489 (DE-600)2364789-9 1876-4401 nnns volume:6 year:2012 number:3 day:07 month:06 pages:130-135 https://dx.doi.org/10.1016/j.artres.2012.05.002 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2004 GBV_ILN_2014 GBV_ILN_2068 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 6 2012 3 07 06 130-135
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source	Enthalten in Artery research 6(2012), 3 vom: 07. Juni, Seite 130-135 volume:6 year:2012 number:3 day:07 month:06 pages:130-135
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authorswithroles_txt_mv	Sugawara, Jun @@aut@@ Willie, Christopher K. @@aut@@ Miyazawa, Taiki @@aut@@ Komine, Hidehiko @@aut@@ Ainsle, Philip N. @@aut@@ Ogoh, Shigehiko @@aut@@
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author	Sugawara, Jun
spellingShingle	Sugawara, Jun misc Arterial compliance misc Carotid-vagal misc baroreflex misc Head-up tilt Effects of transient change in carotid arterial stiffness on arterial baroreflex during mild orthostatic stimulation
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topic_title	Effects of transient change in carotid arterial stiffness on arterial baroreflex during mild orthostatic stimulation Arterial compliance (dpeaa)DE-He213 Carotid-vagal (dpeaa)DE-He213 baroreflex (dpeaa)DE-He213 Head-up tilt (dpeaa)DE-He213
topic	misc Arterial compliance misc Carotid-vagal misc baroreflex misc Head-up tilt
topic_unstemmed	misc Arterial compliance misc Carotid-vagal misc baroreflex misc Head-up tilt
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title	Effects of transient change in carotid arterial stiffness on arterial baroreflex during mild orthostatic stimulation
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title_full	Effects of transient change in carotid arterial stiffness on arterial baroreflex during mild orthostatic stimulation
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author_browse	Sugawara, Jun Willie, Christopher K. Miyazawa, Taiki Komine, Hidehiko Ainsle, Philip N. Ogoh, Shigehiko
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title_sort	effects of transient change in carotid arterial stiffness on arterial baroreflex during mild orthostatic stimulation
title_auth	Effects of transient change in carotid arterial stiffness on arterial baroreflex during mild orthostatic stimulation
abstract	Abstract Stiffening of central conduit arteries —areas where the mechanoreceptors are embedded (e.g., ascending aorta and carotid artery) — is considered to be associated with the impaired baroreflex control in response to hypotensive stress. Arterial stiffness is modulated by vascular tone transiently and dynamically, however, it is unknown whether a transient change in the carotid artery stiffness influences the cardiac baroreflex response to a rapid hypotension. We measured (n = 11) carotid arterial stiffness (via concurrent applanation tonometory and ultrasound imaging) at supine rest and during 20-degree head-up tilt (HUT). To evaluate the cardiac baroreflex response, acute hypotension was evoked by releasing bilateral thigh cuffs after 3 min of suprasystolic resting ischemia at each posture; cardiac baroreflex sensitivity (e.g., change in heart rate for a given change in mean arterial pressure, ΔHR/ΔMAP) and latency (e.g., the time to peak HR response) was estimated. Carotid β-stiffness index, a measure of arterial stiffness, was reduced by 14% during HUT (P < 0.05 vs. supine position). Although cardiac baroreflex responses were unaltered, the within-group biological variability in the cardiac baroreflex sensitivity and latency from the supine to HUT was correlated with the corresponding changes in carotid arterial stiffness (r = 0.66 and r = 0.64, respectively, both P < 0.05). These findings suggest that a transient change in carotid arterial stiffness, at least in part, influences changes in the cardiac baroreflex response to a rapid hypotension. © Association for Research into Arterial Structure and Physiology. Published by Elsevier B.V. All rights reserved 2012
abstractGer	Abstract Stiffening of central conduit arteries —areas where the mechanoreceptors are embedded (e.g., ascending aorta and carotid artery) — is considered to be associated with the impaired baroreflex control in response to hypotensive stress. Arterial stiffness is modulated by vascular tone transiently and dynamically, however, it is unknown whether a transient change in the carotid artery stiffness influences the cardiac baroreflex response to a rapid hypotension. We measured (n = 11) carotid arterial stiffness (via concurrent applanation tonometory and ultrasound imaging) at supine rest and during 20-degree head-up tilt (HUT). To evaluate the cardiac baroreflex response, acute hypotension was evoked by releasing bilateral thigh cuffs after 3 min of suprasystolic resting ischemia at each posture; cardiac baroreflex sensitivity (e.g., change in heart rate for a given change in mean arterial pressure, ΔHR/ΔMAP) and latency (e.g., the time to peak HR response) was estimated. Carotid β-stiffness index, a measure of arterial stiffness, was reduced by 14% during HUT (P < 0.05 vs. supine position). Although cardiac baroreflex responses were unaltered, the within-group biological variability in the cardiac baroreflex sensitivity and latency from the supine to HUT was correlated with the corresponding changes in carotid arterial stiffness (r = 0.66 and r = 0.64, respectively, both P < 0.05). These findings suggest that a transient change in carotid arterial stiffness, at least in part, influences changes in the cardiac baroreflex response to a rapid hypotension. © Association for Research into Arterial Structure and Physiology. Published by Elsevier B.V. All rights reserved 2012
abstract_unstemmed	Abstract Stiffening of central conduit arteries —areas where the mechanoreceptors are embedded (e.g., ascending aorta and carotid artery) — is considered to be associated with the impaired baroreflex control in response to hypotensive stress. Arterial stiffness is modulated by vascular tone transiently and dynamically, however, it is unknown whether a transient change in the carotid artery stiffness influences the cardiac baroreflex response to a rapid hypotension. We measured (n = 11) carotid arterial stiffness (via concurrent applanation tonometory and ultrasound imaging) at supine rest and during 20-degree head-up tilt (HUT). To evaluate the cardiac baroreflex response, acute hypotension was evoked by releasing bilateral thigh cuffs after 3 min of suprasystolic resting ischemia at each posture; cardiac baroreflex sensitivity (e.g., change in heart rate for a given change in mean arterial pressure, ΔHR/ΔMAP) and latency (e.g., the time to peak HR response) was estimated. Carotid β-stiffness index, a measure of arterial stiffness, was reduced by 14% during HUT (P < 0.05 vs. supine position). Although cardiac baroreflex responses were unaltered, the within-group biological variability in the cardiac baroreflex sensitivity and latency from the supine to HUT was correlated with the corresponding changes in carotid arterial stiffness (r = 0.66 and r = 0.64, respectively, both P < 0.05). These findings suggest that a transient change in carotid arterial stiffness, at least in part, influences changes in the cardiac baroreflex response to a rapid hypotension. © Association for Research into Arterial Structure and Physiology. Published by Elsevier B.V. All rights reserved 2012
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title_short	Effects of transient change in carotid arterial stiffness on arterial baroreflex during mild orthostatic stimulation
url	https://dx.doi.org/10.1016/j.artres.2012.05.002
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author2	Willie, Christopher K. Miyazawa, Taiki Komine, Hidehiko Ainsle, Philip N. Ogoh, Shigehiko
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up_date	2024-07-04T02:45:39.113Z
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To evaluate the cardiac baroreflex response, acute hypotension was evoked by releasing bilateral thigh cuffs after 3 min of suprasystolic resting ischemia at each posture; cardiac baroreflex sensitivity (e.g., change in heart rate for a given change in mean arterial pressure, ΔHR/ΔMAP) and latency (e.g., the time to peak HR response) was estimated. Carotid β-stiffness index, a measure of arterial stiffness, was reduced by 14% during HUT (P < 0.05 vs. supine position). Although cardiac baroreflex responses were unaltered, the within-group biological variability in the cardiac baroreflex sensitivity and latency from the supine to HUT was correlated with the corresponding changes in carotid arterial stiffness (r = 0.66 and r = 0.64, respectively, both P < 0.05). 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Effects of transient change in carotid arterial stiffness on arterial baroreflex during mild orthostatic stimulation

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