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Statements

Subject Item
n2:RIV%2F00023001%3A_____%2F07%3A00000812%21RIV08-MZ0-00023001
rdf:type
skos:Concept n12:Vysledek
dcterms:description
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 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.
dcterms: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 Impact of arterial load and loading sequence on left ventricular tissue velocities in humans
skos:prefLabel
Impact of arterial load and loading sequence on left ventricular tissue velocities in humans Impact of arterial load and loading sequence on left ventricular tissue velocities in humans Efekt sekvence zatížení na na tkáňové rychlosti myokardu levé komory
skos:notation
RIV/00023001:_____/07:00000812!RIV08-MZ0-00023001
n3:strany
1570-1577
n3:aktivita
n6:Z
n3:aktivity
Z(MZ0IKEM2005)
n3:cisloPeriodika
16
n3:dodaniDat
n16:2008
n3:domaciTvurceVysledku
n8:4066332
n3:druhVysledku
n14:J
n3:duvernostUdaju
n5:S
n3:entitaPredkladatele
n11:predkladatel
n3:idSjednocenehoVysledku
425547
n3:idVysledku
RIV/00023001:_____/07:00000812
n3:jazykVysledku
n15:eng
n3:klicovaSlova
cardiology
n3:klicoveSlovo
n13:cardiology
n3:kodStatuVydavatele
US - Spojené státy americké
n3:kontrolniKodProRIV
[767C916C6269]
n3:nazevZdroje
Journal of the American College of Cardiology
n3:obor
n17:FA
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
6
n3:rokUplatneniVysledku
n16:2007
n3:svazekPeriodika
50
n3:tvurceVysledku
Kass, D. Abraham, T. Melenovský, Vojtěch Kessler, K. Chang, H. Redfield, M.
n3:zamer
n4:MZ0IKEM2005
s:issn
0735-1097
s:numberOfPages
8