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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)
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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)
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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)
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skos:notation
| - RIV/00023001:_____/07:00000812!RIV08-MZ0-00023001
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http://linked.open.../vavai/riv/strany
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http://linked.open...avai/riv/aktivita
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http://linked.open...avai/riv/aktivity
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http://linked.open...iv/cisloPeriodika
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http://linked.open...vai/riv/dodaniDat
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http://linked.open...aciTvurceVysledku
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http://linked.open.../riv/druhVysledku
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http://linked.open...iv/duvernostUdaju
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http://linked.open...titaPredkladatele
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http://linked.open...dnocenehoVysledku
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http://linked.open...ai/riv/idVysledku
| - RIV/00023001:_____/07:00000812
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http://linked.open...riv/jazykVysledku
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http://linked.open.../riv/klicovaSlova
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http://linked.open.../riv/klicoveSlovo
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http://linked.open...odStatuVydavatele
| - US - Spojené státy americké
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http://linked.open...ontrolniKodProRIV
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http://linked.open...i/riv/nazevZdroje
| - Journal of the American College of Cardiology
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http://linked.open...in/vavai/riv/obor
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http://linked.open...ichTvurcuVysledku
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http://linked.open...cetTvurcuVysledku
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http://linked.open...UplatneniVysledku
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http://linked.open...v/svazekPeriodika
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http://linked.open...iv/tvurceVysledku
| - Melenovský, Vojtěch
- Redfield, M.
- Kessler, K.
- Abraham, T.
- Chang, H.
- Kass, D.
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http://linked.open...n/vavai/riv/zamer
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issn
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number of pages
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is http://linked.open...avai/riv/vysledek
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