Effect of hemodynamics on left ventricular vortex in diastole

• NAKATANI Satoshi

  Osaka University Graduate School of Medicine

• WADA Shigeo

  Osaka University Graduate School of Engineering Science

• MASUYAMA Tohru

  Cardiovascular Division, Department of Internal Medicine, Hyogo College of Medicine

Bibliographic Information

Other Title

• 拡張期左室内渦流に対する血行動態の影響

Abstract

Purpose: Vortex flow has been known to aid effective left ventricular filling. Left ventricular vortex in diastole can be assessed with newly developed echodynamography based on color Doppler information. We evaluated the effect of hemodynamics on the vortex. Subjects and Methods: We measured the maximal flow, area, intensity, and position of the vortex in diastole using echodynamography along with hemodynamics in eight open chest dogs before and after esmorol (250 μg/kg/min) and dobutamine (5.0 μg/kg/min) infusion. Left ventricular inflow velocity was measured by pulsed Doppler echocardiography. Results: The maximal flow and the area decreased with esmorol and increased with dobutamine; therefore, the intensity did not change significantly. The maximal flow showed a significant correlation with left ventricular early diastolic inflow velocity but not with other indexes such as left ventricular systolic and end-diastolic pressures, tau and±dP/dt. Conclusion: Left ventricular vortex in diastole is affected by left ventricular inflow dynamics.

Journal

• Choonpa Igaku

  Choonpa Igaku 40 (3), 273-281, 2013

  The Japan Society of Ultrasonics in Medicine

Keywords

• diastole
• vortex
• cardiac function
• echocardiography

Details

• CRID: 1390001205197978624
• NII Article ID: 10031170230
• NII Book ID: AA11889584
• DOI: 10.3179/jjmu.jjmu.a.7
• ISSN: 18819311
• ISSN: 13461176
• Web Site: https://search.jamas.or.jp/link/ui/2013257713
• Text Lang: ja
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed