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Intraoperative and Postoperative Evaluation of Cavitation in Mechanical Heart Valve Patients
Tina S. Andersen, MD, Peter Johansen, PhD, Bekka O. Christensen, MD, Peter K. Paulsen, DMSc, Hans Nygaard, DMSc, J. Michael Hasenkam, DMSc The Annals of Thoracic Surgery Volume 81, Issue 1, Pages (January 2006) DOI: /j.athoracsur Copyright © 2006 The Society of Thoracic Surgeons Terms and Conditions
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Fig 1 The total energy content in the signal recorded intraoperatively in a mechanical heart valve patient with frequencies (Hz) on the x-axis and signal energy density (Pa2 . s) on the y-axis. The graph on the left shows logarithmic scale and the graph on the right shows linear scale. The Annals of Thoracic Surgery , 34-41DOI: ( /j.athoracsur ) Copyright © 2006 The Society of Thoracic Surgeons Terms and Conditions
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Fig 2 The (A) nondeterministic and (B) deterministic content in the signal recorded intraoperatively in a mechanical heart valve patient with frequencies (Hz) on the x-axis and signal energy density (Pa2 . s) on the y-axis. The graph on the left shows logarithmic scale and the graph on the right shows linear scale. The Annals of Thoracic Surgery , 34-41DOI: ( /j.athoracsur ) Copyright © 2006 The Society of Thoracic Surgeons Terms and Conditions
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Fig 3 The total energy content in the signal recorded postoperatively in a mechanical heart valve patient with frequencies (Hz) on the x-axis and signal energy density (Pa2 . s) on the y-axis. The graph on the left shows logarithmic scale and the graph on the right shows linear scale. The Annals of Thoracic Surgery , 34-41DOI: ( /j.athoracsur ) Copyright © 2006 The Society of Thoracic Surgeons Terms and Conditions
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Fig 4 The (A) nondeterministic and (B) deterministic content in the signal recorded intraoperatively in a mechanical heart valve patient with frequencies (Hz) on the x-axis and signal energy density (Pa2 . s) on the y-axis. The graph on the left shows logarithmic scale and the graph on the right shows linear scale. The Annals of Thoracic Surgery , 34-41DOI: ( /j.athoracsur ) Copyright © 2006 The Society of Thoracic Surgeons Terms and Conditions
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Fig 5 The nondeterministic energy with intervals for the three groups in a logarithmic scale is shown. (A) Intraoperative measurements, n = 29. (B) Postoperative measurements, n = 21. (E-nondet. = nondeterministic energy; St.J = St. Jude Medical; C-E = Carpentier-Edwards bioprosthesis; Nat = native valves.) The Annals of Thoracic Surgery , 34-41DOI: ( /j.athoracsur ) Copyright © 2006 The Society of Thoracic Surgeons Terms and Conditions
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