Vector flow mapping analysis of left ventricular energetic performance in healthy adult volunteers.

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  • Additional Information
    • Source:
      Publisher: BioMed Central Country of Publication: England NLM ID: 100968539 Publication Model: Electronic Cited Medium: Internet ISSN: 1471-2261 (Electronic) Linking ISSN: 14712261 NLM ISO Abbreviation: BMC Cardiovasc Disord Subsets: MEDLINE
    • Publication Information:
      Original Publication: London : BioMed Central, [2001-
    • Subject Terms:
      Coronary Circulation* ; Myocardial Contraction* ; Ventricular Function, Left*; Echocardiography, Doppler, Color/*methods ; Heart Ventricles/*diagnostic imaging ; Myocardial Perfusion Imaging/*methods; Adult ; Biomechanical Phenomena ; Energy Transfer ; Female ; Healthy Volunteers ; Humans ; Image Interpretation, Computer-Assisted ; Male ; Observer Variation ; Predictive Value of Tests ; Reference Values ; Reproducibility of Results ; Young Adult
    • Abstract:
      Background: Vector flow mapping, a novel flow visualization echocardiographic technology, is increasing in popularity. Energy loss reference values for children have been established using vector flow mapping, but those for adults have not yet been provided. We aimed to establish reference values in healthy adults for energy loss, kinetic energy in the left ventricular outflow tract, and the energetic performance index (defined as the ratio of kinetic energy to energy loss over one cardiac cycle).
      Methods: Transthoracic echocardiography was performed in fifty healthy volunteers, and the stored images were analyzed to calculate energy loss, kinetic energy, and energetic performance index and obtain ranges of reference values for these.
      Results: Mean energy loss over one cardiac cycle ranged from 10.1 to 59.1 mW/m (mean ± SD, 27.53 ± 13.46 mW/m), with a reference range of 10.32 ~ 58.63 mW/m. Mean systolic energy loss ranged from 8.5 to 80.1 (23.52 ± 14.53) mW/m, with a reference range of 8.86 ~ 77.30 mW/m. Mean diastolic energy loss ranged from 7.9 to 86 (30.41 ± 16.93) mW/m, with a reference range of 8.31 ~ 80.36 mW/m. Mean kinetic energy in the left ventricular outflow tract over one cardiac cycle ranged from 200 to 851.6 (449.74 ± 177.51) mW/m with a reference range of 203.16 ~ 833.15 mW/m. The energetic performance index ranged from 5.3 to 37.6 (18.48 ± 7.74), with a reference range of 5.80 ~ 36.67.
      Conclusions: Energy loss, kinetic energy, and energetic performance index reference values were defined using vector flow mapping. These reference values enable the assessment of various cardiac conditions in any clinical situation.
    • Comments:
      Erratum in: BMC Cardiovasc Disord. 2017 Jun 30;17 (1):172. (PMID: 28666420)
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    • Contributed Indexing:
      Keywords: Energetic performance index; Energy loss; Kinetic energy; Vector flow mapping; Vortex
    • Publication Date:
      Date Created: 20170111 Date Completed: 20171003 Latest Revision: 20181113
    • Publication Date:
      20231215
    • Accession Number:
      PMC5223342
    • Accession Number:
      10.1186/s12872-016-0444-7
    • Accession Number:
      28068909