Flow-volume loops derived from three-dimensional echocardiography: a novel approach to the assessment of left ventricular hemodynamics

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Shahgaldi, Kambiz (author)

Flow-volume loops derived from three-dimensional echocardiography : a novel approach to the assessment of left ventricular hemodynamics

Article/chapterEnglish2008

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2008-04-04
Springer Science and Business Media LLC,2008
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LIBRIS-ID:oai:DiVA.org:kth-12962
https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-12962URI
https://doi.org/10.1186/1476-7120-6-13DOI
http://kipublications.ki.se/Default.aspx?queryparsed=id:117048459URI
https://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-4536URI

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Language:English
Summary in:English

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SwePubSwePub

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Subject category:ref swepub-contenttype
Subject category:art swepub-publicationtype

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QC 20100629
Background: This study explores the feasibility of non-invasive evaluation of left ventricular (LV) flow-volume dynamics using 3-dimensional (3D) echocardiography, and the capacity of such an approach to identify altered LV hemodynamic states caused by valvular abnormalities. Methods: Thirty-one patients with moderate-severe aortic (AS) and mitral (MS) stenoses (21 and 10 patients, respectively) and 10 healthy volunteers underwent 3D echocardiography with full volume acquisition using Philips Sonos 7500 equipment. The digital 3D data were post-processed using TomTec software. LV flow-volume loops were subsequently constructed for each subject by plotting instantaneous LV volume data sampled throughout the cardiac cycle vs. their first derivative representing LV flow. After correction for body surface area, an average flow-volume loop was calculated for each subject group. Results: Flow-volume loops were obtainable in all subjects, except 3 patients with AS. The flow-volume diagrams displayed clear differences in the form and position of the loops between normal individuals and the respective patient groups. In patients with AS, an "obstructive" pattern was observed, with lower flow values during early systole and larger end-systolic volume. On the other hand, patients with MS displayed a "restrictive" flow-volume pattern, with reduced diastolic filling and smaller end-diastolic volume. Conclusion: Non-invasive evaluation of LV flow-volume dynamics using 3D-echocardiographic data is technically possible and the approach has a capacity to identify certain specific types of alteration of LV flow-volume pattern caused by valvular abnormalities, thus reflecting underlying hemodynamic states specific for these abnormalities.

Subject headings and genre

TEKNIK OCH TEKNOLOGIER Medicinteknik Medicinsk laboratorie- och mätteknik hsv//swe
ENGINEERING AND TECHNOLOGY Medical Engineering Medical Laboratory and Measurements Technologies hsv//eng
MEDICIN OCH HÄLSOVETENSKAP Medicinska och farmaceutiska grundvetenskaper Farmakologi och toxikologi hsv//swe
MEDICAL AND HEALTH SCIENCES Basic Medicine Pharmacology and Toxicology hsv//eng
CARDIAC MAGNETIC-RESONANCE
2-DIMENSIONAL ECHOCARDIOGRAPHY
EJECTION FRACTION
MYOCARDIAL-INFARCTION
CINEVENTRICULOGRAPHY
QUANTIFICATION
TRANSDUCER
MORBIDITY
MORTALITY
ACCURACY
Medical engineering
Medicinsk teknik

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Söderqvist, Emil (author)
Gudmundsson, PetriMalmö högskola,Fakulteten för hälsa och samhälle (HS)(Swepub:mau)hspegu (author)
Winter, ReidarKarolinska Institutet (author)
Nowak, JacekKarolinska Institutet (author)
Brodin, Lars-ÅkeKarolinska Institutet,KTH,Medicinsk teknik(Swepub:kth)u1jq9s27 (author)
Malmö högskolaFakulteten för hälsa och samhälle (HS) (creator_code:org_t)

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In:Cardiovascular Ultrasound: Springer Science and Business Media LLC61476-7120

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By the author/editor: Shahgaldi, Kambi ...; Söderqvist, Emil; Gudmundsson, Pet ...; Winter, Reidar; Nowak, Jacek; Brodin, Lars-Åke

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ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Medical Engineer ...; and Medical Laborato ...

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