呼吸同調器の検討

抄録

The studies were performed to discuss the usefulness of x-ray synchronizer, Thermister and Mercury-Straingauge, which are used for taking x-ray chest film for infant and child. In clinical studies, the movement of diaphragm was studied by x-ray cine film. At the same time, synchronizing point to the diaphragmatic movement were also checked on the same cine film. Then, diaphragmatic movement were compared to synchronizing points which were taken by the x-ray synchronizer. On the other hand, the foundamental experiments were performed in order to examine the character of the Mercury-Sensor of the Straingauge. From our experiments, following results were observed. (1) In the cases of slow and regular breathing, both Thermister and Mercury-Straingauge are muched at the phase of maximum deep inspirtion. (2) In the cases of quick and irregular breathing, Thermister was synchronized at 220 msec. later at the inspiratory phase, and Mercury-Straingauge was delayed 400 msec. for works to synchronization in the phase of inspiration. From these data, it was conformed that the Mercury-Straingauge was mainly synchronized at the next phase of breathing which is close to the maximum inspiratory phase.