Abstract
Kitaosaka Red Cross Blood Center introduced an apparatus which permits blood donors undergoing apheresis to listen to their favorite music from two loudspeakers placed near their ears and feel vibrations produced by sixteen transducers using low tones less than 120Hz.
Both skin temperature and galvanic skin resistance of those donors changed only slightly when this apparatus was not used, and increased when it was used. These results suggested that the donors felt relaxed when the apparatus was used.
A study on impressions the apheresis donors received indicates that this apparatus not only gave a pleasant refreshment to the donors, but also made the time required for apheresis shorter than it was, and helped to popularize apheresis.
This apparatus also has a merit of preventing vaso-vagal reactions (V. V. R.), a side effect of apheresis.
It is therefore concluded that this apparatus is a useful adjunct to donor apheresis.
