Seismocardiography and 4D flow MRI reveal impact of aortic valve replacement on chest acceleration and aortic hemodynamics

Ethan M.I. Johnson; Mozziyar Etemadi; S. Chris Malaisrie; Patrick M. McCarthy; Michael Markl; Alex J. Barker

doi:10.1111/jocs.14289

Seismocardiography and 4D flow MRI reveal impact of aortic valve replacement on chest acceleration and aortic hemodynamics

Ethan M.I. Johnson^*, Mozziyar Etemadi, S. Chris Malaisrie, Patrick M. McCarthy, Michael Markl, Alex J. Barker

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

Aortic valve replacement (AVR) is a common treatment for severe aortic valve disease, which can adversely affect blood flow in the aorta. Seismocardiography (SCG) measures physical vibrations at the exterior of the chest, which can be sensitive to altered cardiac function and flow dynamics. Magnetic resonance imaging (MRI) can image blood movement, and it can provide depiction and quantification of aortic flow. Here we present SCG and MRI measurements from before and after AVR and ascending aorta replacement, in the case of a woman with bicuspid aortic valve disease and a dilated ascending aorta. SCG measurements show elevated energy during systole indicating stenotic flow before surgery and lowered systolic energy levels after replacement with a prosthetic valve. MRI shows jetting, helical flow before surgery, and cohesive flow after.

Original language	English (US)
Pages (from-to)	232-235
Number of pages	4
Journal	Journal of Cardiac Surgery
Volume	35
Issue number	1
DOIs	https://doi.org/10.1111/jocs.14289
State	Published - Jan 1 2020

Funding

NIH/NHLBI R01HL133504, NIH/NHLBI R01HL130619, Hartwell Foundation, Cryolife Inc. research grant. MM: research support from Siemens Healthineers, research grant from Circle Cardiovascular Imaging, research grant from Cryolife Inc, consultant for Circle Cardiovascular Imaging, consultant for NXT Biomedical. CM: honoraria from Cryolife. NIH/NHLBI R01HL133504, NIH/NHLBI R01HL130619, Hartwell Foundation, Cryolife Inc. research grant. MM: research support from Siemens Healthineers, research grant from Circle Cardiovascular Imaging, research grant from Cryolife Inc, consultant for Circle Cardiovascular Imaging, consultant for NXT Biomedical. CM: honoraria from Cryolife.

Keywords

aorta and great vessels
bicuspid aortic valve
magnetic resonance imaging (MRI)
seismocardiography (SCG)
valve repair/replacement

ASJC Scopus subject areas

Surgery
Pulmonary and Respiratory Medicine
Cardiology and Cardiovascular Medicine

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10.1111/jocs.14289

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title = "Seismocardiography and 4D flow MRI reveal impact of aortic valve replacement on chest acceleration and aortic hemodynamics",

abstract = "Aortic valve replacement (AVR) is a common treatment for severe aortic valve disease, which can adversely affect blood flow in the aorta. Seismocardiography (SCG) measures physical vibrations at the exterior of the chest, which can be sensitive to altered cardiac function and flow dynamics. Magnetic resonance imaging (MRI) can image blood movement, and it can provide depiction and quantification of aortic flow. Here we present SCG and MRI measurements from before and after AVR and ascending aorta replacement, in the case of a woman with bicuspid aortic valve disease and a dilated ascending aorta. SCG measurements show elevated energy during systole indicating stenotic flow before surgery and lowered systolic energy levels after replacement with a prosthetic valve. MRI shows jetting, helical flow before surgery, and cohesive flow after.",

keywords = "aorta and great vessels, bicuspid aortic valve, magnetic resonance imaging (MRI), seismocardiography (SCG), valve repair/replacement",

author = "Johnson, {Ethan M.I.} and Mozziyar Etemadi and Malaisrie, {S. Chris} and McCarthy, {Patrick M.} and Michael Markl and Barker, {Alex J.}",

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AU - Johnson, Ethan M.I.

AU - Etemadi, Mozziyar

AU - Malaisrie, S. Chris

AU - McCarthy, Patrick M.

AU - Markl, Michael

AU - Barker, Alex J.

PY - 2020/1/1

Y1 - 2020/1/1

N2 - Aortic valve replacement (AVR) is a common treatment for severe aortic valve disease, which can adversely affect blood flow in the aorta. Seismocardiography (SCG) measures physical vibrations at the exterior of the chest, which can be sensitive to altered cardiac function and flow dynamics. Magnetic resonance imaging (MRI) can image blood movement, and it can provide depiction and quantification of aortic flow. Here we present SCG and MRI measurements from before and after AVR and ascending aorta replacement, in the case of a woman with bicuspid aortic valve disease and a dilated ascending aorta. SCG measurements show elevated energy during systole indicating stenotic flow before surgery and lowered systolic energy levels after replacement with a prosthetic valve. MRI shows jetting, helical flow before surgery, and cohesive flow after.

AB - Aortic valve replacement (AVR) is a common treatment for severe aortic valve disease, which can adversely affect blood flow in the aorta. Seismocardiography (SCG) measures physical vibrations at the exterior of the chest, which can be sensitive to altered cardiac function and flow dynamics. Magnetic resonance imaging (MRI) can image blood movement, and it can provide depiction and quantification of aortic flow. Here we present SCG and MRI measurements from before and after AVR and ascending aorta replacement, in the case of a woman with bicuspid aortic valve disease and a dilated ascending aorta. SCG measurements show elevated energy during systole indicating stenotic flow before surgery and lowered systolic energy levels after replacement with a prosthetic valve. MRI shows jetting, helical flow before surgery, and cohesive flow after.

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KW - bicuspid aortic valve

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KW - seismocardiography (SCG)

KW - valve repair/replacement

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Seismocardiography and 4D flow MRI reveal impact of aortic valve replacement on chest acceleration and aortic hemodynamics

Abstract

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Keywords

ASJC Scopus subject areas

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