About: Impact of arterial load and loading sequence on left ventricular tissue velocities in humans     Goto   Sponge   NotDistinct   Permalink

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Description
  • Cílem práce bylo studium vztahu mezi profilem tlakové zátěže ve velkých tepnách a ťkáňovými rychlostmi myokardu, měřené pomocí tkáňově dopplerovské echokardiografie v oblasti mitrálního anulu. Práce ukázala, že diastolické a systolické tkáňové rychlosti jsou inverzně proporcionální afterloadu a že zatížení v poslední části systoly má největší efekt na E´rychlost. (cs)
  • OBJECTIVES: The aim of this study was to examine the relationship between individual components of left ventricular (LV) afterload and tissue Doppler echocardiography (TDE) velocities in humans. BACKGROUND: Acute increases in afterload slow diastolic relaxation as assessed invasively, yet little is known about chronic effects of load and loading sequence on LV TDE velocities. METHODS: Forty-eight subjects underwent echo Doppler and color-coded TDE with comprehensive noninvasive vascular assessment. Arterial afterload was measured by effective arterial elastance (Ea) and systemic vascular resistance index (SVRI), and loading sequence was quantified by early- (carotid characteristic impedance [Zc]) and late-systolic loads (augmentation index [cAI]; late pressure-time integral [PTI3]). Vascular stiffness was measured by carotid-femoral pulse wave velocity (PWV) and total arterial compliance. RESULTS: Early-diastolic velocity (E') varied inversely with Zc, SVRI, Ea, and PWV (r = -0.4 to
  • OBJECTIVES: The aim of this study was to examine the relationship between individual components of left ventricular (LV) afterload and tissue Doppler echocardiography (TDE) velocities in humans. BACKGROUND: Acute increases in afterload slow diastolic relaxation as assessed invasively, yet little is known about chronic effects of load and loading sequence on LV TDE velocities. METHODS: Forty-eight subjects underwent echo Doppler and color-coded TDE with comprehensive noninvasive vascular assessment. Arterial afterload was measured by effective arterial elastance (Ea) and systemic vascular resistance index (SVRI), and loading sequence was quantified by early- (carotid characteristic impedance [Zc]) and late-systolic loads (augmentation index [cAI]; late pressure-time integral [PTI3]). Vascular stiffness was measured by carotid-femoral pulse wave velocity (PWV) and total arterial compliance. RESULTS: Early-diastolic velocity (E') varied inversely with Zc, SVRI, Ea, and PWV (r = -0.4 to (en)
Title
  • Impact of arterial load and loading sequence on left ventricular tissue velocities in humans
  • Efekt sekvence zatížení na na tkáňové rychlosti myokardu levé komory (cs)
  • Impact of arterial load and loading sequence on left ventricular tissue velocities in humans (en)
skos:prefLabel
  • Impact of arterial load and loading sequence on left ventricular tissue velocities in humans
  • Efekt sekvence zatížení na na tkáňové rychlosti myokardu levé komory (cs)
  • Impact of arterial load and loading sequence on left ventricular tissue velocities in humans (en)
skos:notation
  • RIV/00023001:_____/07:00000812!RIV08-MZ0-00023001
http://linked.open.../vavai/riv/strany
  • 1570-1577
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • Z(MZ0IKEM2005)
http://linked.open...iv/cisloPeriodika
  • 16
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 425547
http://linked.open...ai/riv/idVysledku
  • RIV/00023001:_____/07:00000812
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • cardiology (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • US - Spojené státy americké
http://linked.open...ontrolniKodProRIV
  • [767C916C6269]
http://linked.open...i/riv/nazevZdroje
  • Journal of the American College of Cardiology
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 50
http://linked.open...iv/tvurceVysledku
  • Melenovský, Vojtěch
  • Redfield, M.
  • Kessler, K.
  • Abraham, T.
  • Chang, H.
  • Kass, D.
http://linked.open...n/vavai/riv/zamer
issn
  • 0735-1097
number of pages
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