Cardiac output response to exercise in relation to metabolic demand in heart failure with preserved ejection fraction

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00023001%3A_____%2F13%3A00058607" target="_blank" >RIV/00023001:_____/13:00058607 - isvavai.cz</a>

Výsledek na webu

<a href="http://eurjhf.oxfordjournals.org/content/15/7/776.full.pdf+html" target="_blank" >http://eurjhf.oxfordjournals.org/content/15/7/776.full.pdf+html</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1093/eurjhf/hft026" target="_blank" >10.1093/eurjhf/hft026</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Cardiac output response to exercise in relation to metabolic demand in heart failure with preserved ejection fraction

Popis výsledku v původním jazyce

Exercise intolerance is a hallmark of heart failure with preserved ejection fraction (HFpEF), yet its mechanisms remain unclear. The current study sought to determine whether increases in cardiac output (CO) during exercise are appropriately matched to metabolic demands in HFpEF. Patients with HFpEF (n 109) and controls (n 73) exercised to volitional fatigue with simultaneous invasive (n 96) or non-invasive (n 86) haemodynamic assessment and expired gas analysis to determine oxygen consumption (VO2) during upright or supine exercise. At rest, HFpEF patients had higher LV filling pressures but similar heart rate, stroke volume, EF, and CO. During supine and upright exercise, HFpEF patients displayed lower peak VO2 coupled with blunted increases in heartrate, stroke volume, EF, and CO compared with controls. LV filling pressures increased dramatically in HFpEF patients, with secondary elevation in pulmonary artery pressures. Reduced peak VO2 in HFpEF patients was predominantly attributa

Název v anglickém jazyce

Cardiac output response to exercise in relation to metabolic demand in heart failure with preserved ejection fraction

Popis výsledku anglicky

Exercise intolerance is a hallmark of heart failure with preserved ejection fraction (HFpEF), yet its mechanisms remain unclear. The current study sought to determine whether increases in cardiac output (CO) during exercise are appropriately matched to metabolic demands in HFpEF. Patients with HFpEF (n 109) and controls (n 73) exercised to volitional fatigue with simultaneous invasive (n 96) or non-invasive (n 86) haemodynamic assessment and expired gas analysis to determine oxygen consumption (VO2) during upright or supine exercise. At rest, HFpEF patients had higher LV filling pressures but similar heart rate, stroke volume, EF, and CO. During supine and upright exercise, HFpEF patients displayed lower peak VO2 coupled with blunted increases in heartrate, stroke volume, EF, and CO compared with controls. LV filling pressures increased dramatically in HFpEF patients, with secondary elevation in pulmonary artery pressures. Reduced peak VO2 in HFpEF patients was predominantly attributa

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

FA - Kardiovaskulární nemoci včetně kardiochirurgie

OECD FORD obor

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Projekt

—

Návaznosti

N - Vyzkumna aktivita podporovana z neverejnych zdroju

Rok uplatnění

2013

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

European journal of heart failure

ISSN

1388-9842

e-ISSN

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Svazek periodika

15

Číslo periodika v rámci svazku

7

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

10

Strana od-do

776-785

Kód UT WoS článku

000320857400013

EID výsledku v databázi Scopus

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