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

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

Shahgaldi, Kambiz (author)

Söderqvist, Emil (author)

Gudmundsson, Petri (author): Malmö högskola,Fakulteten för hälsa och samhälle (HS)

Winter, Reidar (author): Karolinska Institutet

Nowak, Jacek (author): Karolinska Institutet

Brodin, Lars-Åke (author): Karolinska Institutet,KTH,Medicinsk teknik

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(creator_code:org_t)

2008-04-04
2008
English.
In: Cardiovascular Ultrasound. - : Springer Science and Business Media LLC. - 1476-7120. ; 6

Related links:: https://cardiovascul...; show more...; http://www.cardiovas...; https://urn.kb.se/re...; https://doi.org/10.1...; http://kipublication...; https://urn.kb.se/re...; show less...

Journal article (peer-reviewed)

Abstract Subject headings

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

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)

Keyword

CARDIAC MAGNETIC-RESONANCE
2-DIMENSIONAL ECHOCARDIOGRAPHY
EJECTION FRACTION
MYOCARDIAL-INFARCTION
CINEVENTRICULOGRAPHY
QUANTIFICATION
TRANSDUCER
MORBIDITY
MORTALITY
ACCURACY
Medical engineering
Medicinsk teknik

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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 ...

MEDICAL AND HEALTH SCIENCES: MEDICAL AND HEAL ...; and Basic Medicine; and Pharmacology and ...

Articles in the publication: Cardiovascular U ...

By the university: Royal Institute of Technology; Karolinska Institutet; Malmö University

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