J.Jpn. Surg. Soc.. 57(11): 1888-1903, 1957
“ STUDIES ON THE CARDIOSCOPE ”
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Surgical Department, Tokyo Women's Medical College (Director: Prof. Shigeru SAKAKIBARA) Toyohiko IIKAWA |
It proved successful to observe the valve movement of hearts in animals and in clinical cases.
This report presents the proscess of research works carried out by the author until his success.
I. Revaluation of every type of cardioscope reported formerly by the anthor; it was proved that no cardioscope except that invented by Sakakibara was adequate to observe the actions of the inner surface of the heart, because they could show only a limited area, where the scope contacted closely.
II. Photographs were taken successfully in clinical cases of mitral-stenosis by using a cardioscope, at the tip of which a rubber bag was connected.
This method was found to be avaiable by the author. In one case of aortic-stenosis, photographs of the movement of the aortic valves before and after operations were taken by a cine-camera using the Sakakibara's method. The Sakakibara's method was to dilute blood by ejecting Ringer's solution from the tip of the scope before and after valvulotomy.
III. The operations of three cases of septum-defekt were carried out clinically by using the cardioscope with elastic plastic baloon at the tip.
IV. To take a film of the movement of valves another method was also used. Blood flow was occluded by kiser's ligation and some amount of Ringer's solution was poured into the ventricle.
This method was proved to be safe under some limited conditions.
V. In this way the movements of the aortic and mitral valves were caught in motion pictures. At the same time E.C.G. and intracardiac pressure were also recorded. The movements of the aortic and mitral valves, papillar muscle and chordae were studied. Such a kind of stuy as taking a film in clinical cases has not yet been reported. These observations by the author seem to be valuable, because they will form the foundations of the further developement.
(author's abstract)
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