自動拍背對背部血流促進效益之評估

Assessment in the Automatic Percussing Efficiency of the Blood Flow of the Back

人口老年化的今日，使得長期臥床照護需求更為殷切。所以本研究旨在評估自動翻身拍背是否為長期臥床者之輔助照護方法；拍背的叩擊刺激，能引起背部肌肉的牽張而產生反射性收縮，收縮的活動將增加背部組織新陳代謝率而提升其血流量。研究結果顯示，安靜臥床的背部血流量基礎值很穩定，維持在75±10（％／min），維持在75±10（％／min）。自動拍背持續3～4分鐘背部血流值開始上升約在拍背第6分鐘即可達到血流高峰值為125±26（％／min），本研究紀錄自動拍背所得血流量提升值與運動刺激產生的血流變化現像相仿，皆為波動性變化表現。將拍背產生的血流高峰值與安靜臥床基礎值以統計檢定，拍背促使背部血流量之提升值顯著高於安靜臥床之基礎。因此基於自動拍背對背部血流及活性之促進效益，自動拍背應可作為臥床者輔助照護之適當措失。

The elder are the major group of the bed-ridden, who suffer from many complications such as bedsores, muscle degeneration or other physiological dysfunction occasionally. Our research is to evaluate the permissibility of automatic turnover and percussing bed for its percussive function to care the bed-ridden. Percussion is an adequate stimulation to trigger the stretch reflex of the muscle of the back. Automatic percussing triggers the stretch reflex continuously, which also causes the weak contraction of the dorsal muscle too. Thus the automatic percussing may promote the blood flow and muscle activity of the back of the bed-ridden. Our results shows that, in rest bed-ridden condition the basal blood flow values were very stable and the average value was 75±10 (%/min). The blood flow increased after percussing 3-4 min significantly, and reached the first peak value about 125±26 (%/min) after 6 min. Applying statistic test to the basal and peak blood flow values shows that the difference between the rest and percussive condition is significant. Our results suggest that automatic turnover and percussing sickbed may be a suitable caring method for the bed-ridden, because that it promotes the blood flow and muscle activity of the back.