Abstract
Electrophrenic respiration (EPR) is one of the negative pressure artificial respiration, and is effective method for ventilatory support.
We have newly devised a proto-type generator for transvenous EPR with radiofrequency coupling.
The function of the generator is evaluated.
1) Stimulation impulses and pulse trains were transmitted by radio frequency coupletly.
2) Out puts and ventilatory volumes were measured in various situation of the transmitter and the receiver by changing the position of the transmitter. Out puts were strong enough for stimulation of the phrenic nerves in various situations. Thus, EPR by this device is applicable to the clinical cases safely. Ventilatory volumes were adequate.
3) Relation of ventilatory volume and out put was almost equal in this method and the previously devised generator.
4) EPR by radiofrequency coupling is more practical for long term clinical application. But, more exquisite apparatus should be developed.
