What question did this study set out to answer?

To evaluate intracardiac blood flow dynamics in healthy subjects and patients with various cardiac abnormalities using bi-directional pulsed Doppler echocardiography guided by two-dimensional imaging.

January 1, 1977Japanese Circulation JournalOpen Access

Intracardiac Flow Dynamics with Bi-directional Ultrasonic Pulsed Doppler Technique : SYMPOSIUM ON EVALUATION OF CARDIAC FUNCTIONS THROUGH NON-INVASIVE TECHNIQUES

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Why the study?

Can bi-directional ultrasonic pulsed Doppler combined with 2D echocardiography accurately evaluate intracardiac flow dynamics in healthy and diseased states?

Population

Healthy subjects, clinical cases with various cardiac conditions, and experimental stenosis models.

Authors

HMHirohíde MatsuoKagoshima Medical Center AKAkira KitabatakeCardiac Imaging THTohru HayashiUniversity of Miyazaki Hospital

Discussion

Member takes

Implication

May support non-invasive intracardiac flow assessment; hypothesis-generating and should not yet change practice.

Key Points

To evaluate intracardiac blood flow dynamics in healthy subjects and patients with various cardiac abnormalities using bi-directional pulsed Doppler echocardiography guided by two-dimensional imaging.
Combined bi-directional ultrasonic pulsed Doppler technique with two-dimensional echocardiography to identify flow sampling sites within cardiac chambers and great vessels.
Used soundspectrographic analysis of Doppler signals to distinguish blood flow characteristics from valve motion and identify distinct flow modes.
Assessed flow patterns across healthy controls, clinical disease states (mitral stenosis, aortic regurgitation, mitral regurgitation, hypertrophic cardiomyopathy, atrial septal defect), and experimental stenosis models.
Healthy subjects demonstrated laminar intracardiac flow, including a cranially directed stream toward the aorta within the left ventricular outflow tract during mid-to-late diastole.
Mitral stenosis produced a rapid, predominantly laminar central jet that closely matched patterns observed in experimental stenosis models.
Markedly disturbed flow patterns were identified in aortic regurgitation, mitral regurgitation, hypertrophic cardiomyopathy with outflow tract obstruction, and atrial septal defect.

Structured PICO

Can bi-directional ultrasonic pulsed Doppler combined with 2D echocardiography accurately evaluate intracardiac flow dynamics in healthy and diseased states?

Population

Healthy subjects, clinical cases with various cardiac conditions (mitral stenosis, aortic regurgitation, mitral regurgitation, hypertrophic cardiomyopathy, atrial septal defect), and experimental stenosis models.

Intervention

Bi-directional ultrasonic pulsed Doppler technique combined with two-dimensional echocardiography and soundspectrographic analysis.

Outcome

Intracardiac flow dynamics and flow modes.surrogate

Bi-directional pulsed Doppler combined with 2D echocardiography is a useful non-invasive technique for evaluating normal and pathological intracardiac flow dynamics.

Cite This Study

Matsuo et al. (1977) studied this question.

synapsesocial.com/papers/6a0cd13963ecdfd686625884 https://doi.org/10.1253/jcj.41.515

Topics

Mitral valve intervention Valvular heart disease Atrial fibrillation Persistent AF management Echocardiography Hypertrophic cardiomyopathy

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Intracardiac Flow Dynamics with Bi-directional Ultrasonic Pulsed Doppler Technique : SYMPOSIUM ON EVALUATION OF CARDIAC FUNCTIONS THROUGH NON-INVASIVE TECHNIQUES

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

Topics

Intracardiac Flow Dynamics with Bi-directional Ultrasonic Pulsed Doppler Technique : SYMPOSIUM ON EVALUATION OF CARDIAC FUNCTIONS THROUGH NON-INVASIVE TECHNIQUES

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

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