Key result
Pulsed Doppler echocardiography noninvasively records mitral valve flow velocity patterns in healthy controls.
Why the study?
The authors devised and tested a new method for non-invasive recording of blood flow velocity patterns from the heart valves for the diagnosis and evaluation of mitral valve disease.
Can pulsed Doppler echocardiography be used for non-invasive recording of mitral valve flow velocity patterns to diagnose and evaluate mitral valve disease?
Observational (n=30)
Can pulsed Doppler echocardiography be used for non-invasive recording of mitral valve flow velocity patterns to diagnose and evaluate mitral valve disease?
This paper describes a novel technique using pulsed Doppler echocardiography to non-invasively record mitral valve flow velocity patterns.
May enable non-invasive mitral flow assessment; leaves open diagnostic validation in valve disease.
blood flow using the combined transcutaneous pulsed Doppler and conventional echocardiographic procedures.At our request, the audio frequency output signal of the pulsed Doppler was demodu- lated by means of a frequency-to-voltage con- verter and a single continuous curve was thus substituted for the frequency spectral display previously necessary to interpret the output signal.A new method was devised and tested by our group for recording blood flow velocity patterns from the heart valves.The encouraging results are presented here. Subjects and methodsWe first studied a control group of 30 subjects, 13 women and 17 men, ranging in age from 7 to 40 years, all with normal hearts or in whom organic or
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Kalmanson et al. (1977) conducted an observational in Mitral valve disease (n=30). Combined transcutaneous pulsed Doppler and conventional echocardiography with a frequency-to-voltage converter vs. Normal heart control group was evaluated on Mitral valve blood flow velocity patterns. Transcutaneous pulsed Doppler echocardiography with a frequency-to-voltage converter was tested to record mitral valve flow velocity patterns in 30 control subjects aged 7-40 years.
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