Usefulness of noninvasive doppler measurement of ascending aortic blood velocity and acceleration in detecting impairment of the left ventricular functional response to exercise three weeks after acute myocardial infarction

Mehta, N.; Bennett, David; Mannering, D; Dawkins, Keith D.; Ward, David

doi:10.1016/s0002-9149(86)80003-0

Cited by 42 publications

(3 citation statements)

References 13 publications

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“…Doppler echocardiography provides the potential to monitor aortic blood velocity and thus to study left ventricular ejection dynamics noninvasively. Several recent publications have reported reduced peak velocity or peak acceleration of aortic flow at rest in patients with dilated cardiomyopathy [1,2] or during exercise in patients with coronary artery disease [3][4][5][6][7], The present study has focused on the characterization of variations of aortic velocity in normal subjects studied by Doppler in different body positions and during static and dynamic exercise.…”

Section: Discussionmentioning

confidence: 99%

Effect of Body Position, Static and Dynamic Exercise on Doppler-Derived Aortic Velocity in Normal Subjects

Hoffmann¹,

Anastassiou²,

Rutishauser³

et al. 1991

Am J Noninvas Cardiol

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Doppler ultrasound permits noninvasive monitoring of aortic blood velocity. This study in 15 normal volunteers was undertaken to define the normal behavior of aortic Doppler velocity during change of body position as well as during static and dynamic exercise. Aortic velocity was markedly lower in the upright standing position compared with the supine position with a reduction of peak velocity (peak V) by 31 ± 5% (p < 0.01) and of the velocity time integral (VTI) by 51 ± 4% (p < 0.01). During bicycle exercise in the sitting position peak V progressively increased with increasing workload to 194 ± 15% (p < 0.01) of the resting value. The VTI increased at the lowest workload by 47 ± 9% (p < 0.01) and then remained constant at higher workload. During isometric handgrip exercise in the supine position neither peak V nor VTI changed significantly. The results indicate that aortic Doppler velocity critically depends on the body position. The variation of VTI during changes of body position and during exercise are similar in magnitude to those of stroke volume in previous studies employing invasive methods.

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Section: Discussionmentioning

confidence: 99%

Effect of Body Position, Static and Dynamic Exercise on Doppler-Derived Aortic Velocity in Normal Subjects

Hoffmann¹,

Anastassiou²,

Rutishauser³

et al. 1991

Am J Noninvas Cardiol

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show abstract

“…These measurements were made from five clear, nearly consecutive Doppler signals obtained at each of the following times: just before an inflation (baseline), at the end of a balloon inflation, and 120 s after balloon deflation. A mean of 8-7 consecutive signals (range [5][6][7][8][9][10][11][12][13][14] were measured on the initial baseline, and timing these as close to balloon inflation as possible allowed most of these measurements to be made at the time the deflated balloon catheter was across the lesion.…”

Section: Doppler Measurementsmentioning

confidence: 99%

Changes in Doppler indices of cardiac function during and after percutaneous transluminal coronary angioplasty.

Hunt

Chow²,

Escaned³

et al. 1991

Heart

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Objective-To assess the sensitivities of Doppler indices to changes in global cardiac function during and after controlled myocardial ischaemia induced by coronary angioplasty.Design-Continuous wave Doppler signals of aortic flow were recorded during coronary angioplasty. The following Doppler indices of cardiac function were measured before, during, and after balloon inflation: V (peak velocity), MA (mean acceleration), V2/T (T = time from onset to peak ejection), and MD (minute distance corrected for baseline heart rate).Setting-A tertiary care cardiological unit in a university hospital.

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“…7-10 Several clinical investigations have established high sensitivity of Doppler indices of LV function to the effects of ischemia in patients with myocardial infarction (MI) and coronary artery disease (CAD) . 10,12 Recently, experimental studies have reported the potential usefulness of the pulmonary flow patterns in the evaluation of right ventricular performance in the experimental RV infarction. 13 The goal of the study was to assess RV systolic performance in patients with inferior MI by means of Doppler echocardiography of pulmonary flow and to correlate them with hemodynamic findings.…”

Section: Introduction 'mentioning

confidence: 99%

Doppler Echocardiographic Study of Right Ventricular Systolic Performance in Inferior Myocardial Infarction

Özgül

1999

Angiology

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Twenty-four male patients with myocardial infarction (MI) without clinical and electrocardiographic signs of right ventricular (RV) involvement were selected to enter the study. All the patients were divided into two groups: Group I consisted of 12 patients with anterior MI and infarct-related left anterior descending artery and Group II included 12 patients with inferior MI and infarct-related right coronary artery. Patients of Group II had higher right atrial pressure and right atrial pressure/pulmonary capillary wedge pressure ratio (p<0.01, p<0.01) and lower values of pulmonary flow velocity, mean acceleration, and pulmonary flow velocity2/acceleration time ratio than patients of Group I (p<0.01, p<0.01, p<0.01, respectively). Pulmonary flow indices correlated inversely and significantly with hemodynamic dysfunction in patients with inferior myocardial infarction and right coronary proximal lesions (p<0.01).

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Usefulness of noninvasive doppler measurement of ascending aortic blood velocity and acceleration in detecting impairment of the left ventricular functional response to exercise three weeks after acute myocardial infarction

Cited by 42 publications

References 13 publications

Effect of Body Position, Static and Dynamic Exercise on Doppler-Derived Aortic Velocity in Normal Subjects

Effect of Body Position, Static and Dynamic Exercise on Doppler-Derived Aortic Velocity in Normal Subjects

Changes in Doppler indices of cardiac function during and after percutaneous transluminal coronary angioplasty.

Doppler Echocardiographic Study of Right Ventricular Systolic Performance in Inferior Myocardial Infarction

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