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 journalArticle

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 languageEnglish (US)
Pages (from-to)232-235
Number of pages4
JournalJournal of Cardiac Surgery
Volume35
Issue number1
DOIs
StatePublished - Jan 1 2020

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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