ネックバンド型パルスオキシメータの試作: 手術室・ICUでの応用

摘要

近年、パルスオキシメータは、呼吸管理・安全管理を改善するための有用性が広く認知され、ICUや手術室、救急現場など、様々な現場で急速に普及してきたロー方、測定部位においては、簡易的に取り外し可能な手指型が一般的に使用されている。しかし、手術室やICUなど循環動態や環境の変化をきたしやすい場合，データが収集できない場合がある。そこで、本研究では、前頭部より測定感度がよいと推測した新たな部位として首に着目し、首でSpO_2の測定が可能なネックバンド型のアタッチメントを試作するとともに前頭部型とSpO_2の値を比較した。測定感度は、前頭部型に比べ、ネックバンド型が有意（P＜0.001）に高かった。前頭部型は、指標とする測定動脈が細く、また循環動態の変化に対する影響を少なからず受けるのだと考えられる。それに対して、ネックバンド型は、脳へ流れる主要動脈である椎骨動脈を指標としているため、血管は太く測定も容易で、且つ循環動態の変化に対する影響を受けにくい事が示唆された。%The pulse oximeter is widely acknowledged the utility to improve the respiratory management and the safety management, and has spread rapidly on various sites such as ICU, operating rooms, and the emergency sites in recent years. On the other hand, a removable hand finger shape is generally used still simply in the measurement site. However, when the change in circulatory dynamics and the environment such as operating rooms and ICU is caused easily, data might not be able to be collected. Then, it paid attention to the neck as a new part guessed that the measurement sensitivity was better than sincipita, the attachment of the problem band type that the measurement of SpO_2 is possible by the neck was made for trial purposes, and the sinciput type was compared in the present study with the value of SpO_2. The problem band type of the measurement sensitivity was higher than the sinciput type in significant (P<0.001). The sinciput type is thin the measurement artery assumed to be an index and thought to receive the influence on the change in circulatory dynamics in no small way. On the other hand, it was thought that the blood vessel was fat, easy the measurement, too and did not receive the influence on the change in circulatory dynamics easily because the index of the problem band type was a vertebral artery that was the principal shock pulse that flowed to the brain.