Should a fixed external reference system be used to analyze left ventricular wall motion?

Clayton, Paul D.; Jeppson, G M; Klausner, Steven C.

doi:10.1161/01.cir.65.7.1518

Cited by 41 publications

(5 citation statements)

References 4 publications

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“…Many methods of realigning the end-diastolic and endsystolic contours have been devised,69 1,18 but all are empiric and offer no theoretical advantage over not realigning. 26 Our own studies show that realignment by superimposition of long axes worsens variability rather than reducing it. 17 However, if a physiologically valid method of realignment is developed, then it can be easily added to the centerline method, after redefining the normal mean and standard deviation and artery territories.…”

Section: Discussionmentioning

confidence: 88%

Advantages and applications of the centerline method for characterizing regional ventricular function.

Sheehan¹,

Bolson²,

Dodge³

et al. 1986

Circulation

577

179

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We sought to identify theoretical advantages and applications of the centerline method for quantitative assessment of regional ventricular function. Motion was measured along 100 chords constructed perpendicular to a centerline drawn midway between the end-diastolic and end-systolic contours, and normalized for heart size. Abnormality was expressed in units of standard deviations from the mean motion in a normal reference population to indicate both the severity and significance of the wall motion abnormality. The mean abnormality averaged over 100 chords correlated highly with the area ejection fraction (r = .97). The centerline method uses a "sliding window" to measure motion where it is abnormal, because assessment of wall motion in predefined regions of the ventricular contour underestimates abnormality. From the 100 data points, the extent (% of contour) of regional abnormalities can also be determined. The

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Section: Discussionmentioning

confidence: 88%

Advantages and applications of the centerline method for characterizing regional ventricular function.

Sheehan¹,

Bolson²,

Dodge³

et al. 1986

Circulation

577

179

View full text Add to dashboard Cite

show abstract

“…We studied 15 patients (7 men, 8 women; mean age 62. 4 8.0) with sinus rhythm who underwent cardiac catheterization, coronary angiography, and left ventriculography for the diagnosis of angina pectoris or dilated cardiomyopathy. All of these subjects also underwent echocardiography.…”

Section: Study Groupsmentioning

confidence: 99%

Evaluation of Left Ventricular Systolic and Diastolic Global Function: Peak Positive and Negative Myocardial Velocity Gradients in M‐Mode Doppler Tissue Imaging

Ueno

Nakamura

Ohbayashi³

et al. 2002

Echocardiography

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“…Regional wall motion is closely related to the status of the cardiac muscle in these local areas [1][2][3][4][5][6] . However, it is still difficult to evaluate wall motion quantitatively in real time by conventional techniques [7][8][9][10][11][12][13][14] . To date, techniques allowing the assessment of left ventricular function have focused on the analysis of endocardial excursion [15][16][17][18] .…”

Section: Introductionmentioning

confidence: 99%

Quantitative systolic and diastolic transmyocardial velocity gradients assessed by M-mode colour Doppler tissue imaging as reliable indicators of regional left ventricular function after acute myocardial infarction

Garot

Dérumeaux²,

Monin³

et al. 1999

European Heart Journal

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AimsThe aim of this study was to determine whether myocardial velocity gradients assessed by M-mode colour Doppler tissue imaging could be of clinical relevance and represent reliable indicators of regional left ventricular function after acute myocardial infarction. Methods and ResultsAmong 64 consecutive patients with a first acute myocardial infarction, in 50 who had a marked asynergy in the parasternal short-axis view at the mid-papillary muscle level, myocardial velocities and velocity gradients were assessed in the anteroseptum and posterior wall by M-mode Doppler tissue imaging. Similar measurements were obtained in 11 matched healthy volunteers who served as a control group.In patients with anterior myocardial infarction, the peak myocardial velocity gradient in the anteroseptum was significantly lower when compared with controls (mean [SD] 0·0 0·5 vs 1·1 0·7 s 1 during systole, P<0·01; and 0·3 0·6 vs 2·0 0·5 s 1 during diastole, P<0·01). Conversely, the peak systolic myocardial velocity gradient in the posterior wall was significantly higher than in controls (2·6 1·2 vs 1·8 1·2 s 1 , P<0·05).In patients with inferior myocardial infarction, the peak velocity gradient in the posterior wall was significantly lower when compared with healthy subjects (0·9 0·6 vs 1·8 1·2 s 1 during systole and 1·4 1·4 vs 4·9 1·2 s 1 during diastole, both P<0·01). The peak systolic tissue velocity gradient in the anteroseptum was significantly higher than in controls (2·1 1·0 vs 1·1 0·7 s

show abstract

Should a fixed external reference system be used to analyze left ventricular wall motion?

Cited by 41 publications

References 4 publications

Advantages and applications of the centerline method for characterizing regional ventricular function.

Advantages and applications of the centerline method for characterizing regional ventricular function.

Evaluation of Left Ventricular Systolic and Diastolic Global Function: Peak Positive and Negative Myocardial Velocity Gradients in M‐Mode Doppler Tissue Imaging

Quantitative systolic and diastolic transmyocardial velocity gradients assessed by M-mode colour Doppler tissue imaging as reliable indicators of regional left ventricular function after acute myocardial infarction

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