Left ventricular volume from paired biplane two-dimensional echocardiography.

Schiller, N B; Acquatella, Harry; Ports, Thomas A.; Drew, Denis; Goerke, J; Ringertz, Hans; Silverman, Norman H.; Brundage, Bruce H.; Botvinick, E H; Boswell, Rosaleen; Carlsson, Erik; Parmley, William W.

doi:10.1161/01.cir.60.3.547

Cited by 566 publications

(217 citation statements)

References 8 publications

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“…13 Coronary sinus flow was calculated using the thermodilution technique, 14 MVO 2 by the Fick method, and LVEF by the Simpson biplane method. 15 Circumferential end-systolic wall stress (ESWS) was calculated using Mirsky's formula described by Douglas et al 16 …”

Section: Protocolmentioning

confidence: 99%

Adjunctive handgrip during dobutamine stress echocardiography: Invasive assessment of myocardial oxygen consumption in humans

Khan

Otero

Font-Cordoba

et al. 2005

Clinical Cardiology

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SummaryBackground: Adjunctive isometric exercise in the form of sustained submaximal handgrip (HG) is considered to increase the sensitivity of dobutamine stress echo (DSE) for detection of functionally significant coronary artery disease.Hypothesis: The study was undertaken to quantify invasively the impact of HG in humans on hemodynamics and myocardial oxygen consumption (MVO2) during DSE.Methods: An invasive hemodynamic evaluation was performed during DSE and with addition of adjunctive HG in 11 subjects. Coronary sinus (CS) blood flow, right-sided and systemic pressures, oxygen saturations, and transthoracic two-dimensional echocardiography were obtained at each 3-min stage and after adding HG at peak DSE. Myocardial oxygen consumption was calculated by the Fick method and circumferential end-systolic wall stress (ESWS) by Mirsky's formula.Results: At peak DSE, heart rate, left ventricular ejection fraction, CS flow, and MVO2 increased, whereas pulmonary capillary wedge pressure (PCWP) and circumferential endsystolic wall stress (ESWS) decreased from baseline. Com-

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Section: Protocolmentioning

confidence: 99%

Adjunctive handgrip during dobutamine stress echocardiography: Invasive assessment of myocardial oxygen consumption in humans

Khan

Otero

Font-Cordoba

et al. 2005

Clinical Cardiology

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“…Two factors cited by these authors to explain this discrepancy are (1) fluctuation of left ventircular volume between studies, and (2) a lack of precise endocardial definition by two-dimensional echocardiography (Carr et al, 1979;Schiller et al, 1979). The purpose of this study was to measure the contribution of these two factors in the reported underestimation of echocardiographic ventricular volume by using simultaneous contrast techniques to delineate the ventricular cavity.…”

Section: Introductionmentioning

confidence: 96%

Simultaneous contrast imaging of the left ventricle by two‐dimensional echocardiography and standard ventriculography

Barrett

Jacobs

Gomberg

et al. 1982

Clinical Cardiology

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Summary: Simultaneous contrast two-dimensional echocardiograms and contrast ventriculograms were analyzed for 19 cardiac cycles in 6 patients. Ventriculographic volume was underestimated by 40::1:4.5% (p<.OOl) by the contrast echocardiograms, despite good correlation (r = 0.88). Discrepancies could not be assigned to changes in volume between studies nor to a lack of precise endocardial definition. Simultaneous imaging demonstrated that the ultrasonic transducer was located 33° cephalad to the cardiac apex. Although angiographic volume was severely underestimated, ejection fraction (r = 0.93) and stroke volume (r = 0.90) could be calculated from two-dimensional echocardiograms using regression equations.

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“…When echocardiographic measurements were made at end-systole the mean echocardiographic mass for the 10 dogs was 81 ± 24 g; the correlation coefficient for the comparison of the systolic and diastolic values was .92.…”

Section: Resultsmentioning

confidence: 96%

“…IO-2 These methods are superior to M mode methods regardless of geometry'3 and many retain their accuracy in segmental disease. 10. ' I A geometrically rational method of measuring mass from two-dimensional echocardiograms is desirable because it should be less vulnerable to errors arising from the extrapolation of three-dimensional information from linear measurements and from segmental disease.…”

mentioning

confidence: 99%

Canine left ventricular mass estimation by two-dimensional echocardiography.

Schiller¹,

Skiöldebrand²,

Schiller³

et al. 1983

Circulation

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151

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This study was designed to develop a two-dimensional echocardiographic method of measuring the mass of the left ventricle. The general formula for an ellipse was used to derive an algorithm that described the shell volume of concentric truncated ellipsoids. In 10 canine left ventricular two-dimensional echocardiograms, this algorithm accurately predicted postmortem left ventricular mass (r = .98, SEE ± 6 g) and was independent of cardiac cycle phase (systole vs diastole, r = .92). Circulation 68, No. 1, 210-216, 1983. LEFT VENTRICULAR MASS is an important descriptor of cardiac functional status. Pathologically or physiologically increased mass results from the hypertrophic process that frequently, but not always, is accompanied by increased wall thickness. Invasive and noninvasive imaging techniques such as M mode echocardiography and angiography allow quantitation of left ventricular mass by methods that rely on limited measurements of wall thickness taken from one or two loci at the cardiac base in combination with ventricular volume estimates of varying accuracy. 17Although M mode methods have been shown to have useful clinical and investigative applications,7 9 they require technically excellent septal and posterior wall imaging and are proscribed in regional myocardial disease.6 Two-dimensional echocardiography has been shown to provide noninvasive cardiac images from which left ventricular volumes can be reliably measured. IO-2 These methods are superior to M mode I A geometrically rational method of measuring mass from two-dimensional echocardiograms is desirable because it should be less vulnerable to errors arising from the extrapolation of three-dimensional information from linear measurements and from segmental disease.Our purpose was to develop and validate a twodimensional echocardiographic technique for estimating left ventricular mass in which a geometrically representative algorithm, a representative measure of wall thickness, and easily obtained internal left ventricular dimensions are used. MethodsThe study consisted of two phases. In the first phase an algorithm was derived that was both anatomiically logical and solvable with easily obtained echocardiographic dimensions; in the second phase this algorithm was tested in an animal model. Derivation of a mass algorithm. A truncated ellipsoid of revolution was used as a model for developing the algorithm because its shape closely resembles that of the left ventricle.Geiser and Bove'5 found that a similar model provided accurate left ventricular mass predictions from direct measurements of postmortem ventricular wall thickness. Figure 1 is a schematic representation of the long-and short-axis sections of the left ventricle as a truncated ellipsoid. This figure shows the locations of some of the minor-axis radii (semiminor axis) and the major-or long-axis segments (semimajor axis and truncated semimajor axis).Wall thickness was approximated from the short axis at the level of the papillary muscle tips by directly tracing and measuring t...

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Left ventricular volume from paired biplane two-dimensional echocardiography.

Cited by 566 publications

References 8 publications

Adjunctive handgrip during dobutamine stress echocardiography: Invasive assessment of myocardial oxygen consumption in humans

Adjunctive handgrip during dobutamine stress echocardiography: Invasive assessment of myocardial oxygen consumption in humans

Simultaneous contrast imaging of the left ventricle by two‐dimensional echocardiography and standard ventriculography

Canine left ventricular mass estimation by two-dimensional echocardiography.

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