Juntendo Medical Journal
Online ISSN : 2188-2134
Print ISSN : 0022-6769
ISSN-L : 0022-6769
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Volume 8, Issue 2-4
Displaying 1-11 of 11 articles from this issue
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  • [title in Japanese]
    Masahide UESUGI
    1963 Volume 8 Issue 2-4 Pages 67-78
    Published: March 10, 1963
    Released on J-STAGE: November 22, 2014
    DOIhttps://doi.org/10.14789/pjmj.8.67
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    Satoshi WATANABE
    1963 Volume 8 Issue 2-4 Pages 79-93
    Published: March 10, 1963
    Released on J-STAGE: November 22, 2014
    DOIhttps://doi.org/10.14789/pjmj.8.79
    JOURNAL FREE ACCESS
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    In this dissertation the author explains that the intrecardiac phonocardiogram is an important weapon for the diagnosis of the congenital heart-diseases. At the same time the author examines the Doppler method and arrives at the conclusion that besides the valvular vibration the blood flow influences upon the high frequency signal and that we must be careful in the analysis of the Doppler signal, because the intrathoracic and intracardiac vibration mechanism is complicated and the anatomical position of valve shows individual variety. To apply the Doppler method to the clinical diagnosis it is necessary in the present state of study that some indicator, e.g. intracardiac pressure and intracardiac phonocardiogram or other ultrasonic pulse method should be in parallel used. The so-called Mps and Tps which appear after the P wave can be explained not as a reflection of the movement of atrial ventricular vulve itself, but as blood vibration by atrial contraction. The Mps and Tps have the same mechanism as IV tone. Even at the case when auscultation and record of IV tone at the chestwall is difficult, the IV tone can be recorded in the Doppler signal. So in the study of IV tone a new field can be exploited by the Doppler signal method. The Doppler method enables us, without giving no pain to the patients, to get results that cannot be received by the phonocardiogram and other methods. The Doppler method will supplement the insufficient points which phonocardiogram and other methods have. This method was born, as the intracardiac phonocardiogram, in Japan and is highly evaluated in foreign countries. It is hoped that this method be further developed in the right direction by the Japanese scholars.
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