抄録
To examine the effectiveness of hair-washing techniques, a survey was conducted to compare the degree of contamination in the hair and scalp of bed-ridden patients and clarify the difference in contamination depending on the hair-washing interval.
The subjects were patients who were washed while in bed, and were divided into three groups according to the number of days since their last hair wash. The hair and scalp were divided into seven sections and samples were taken to determine the contamination status of each section and the entire head. The contamination index was the amount of bacteria and sebum. The five types of targeted staphylococci were detected via real-time PCR（Polymerase Chain Reaction）. The amount of bacteria was calculated for each type of detected bacteria in each section and compared among the groups. Furthermore, we investigated the relationship between the amount of bacteria and sebum and amount of hair and scalp.
All five types of bacteria were detected in all the hair and scalp sections. The total amount of bacteria in the hair of group 2 was twice that of group 1, and that of group 3 was approximately thrice of that of group 2. Regarding scalp, group 2 had approximately five times more bacteria than group 1, and group 3 had approximately twice as much as group 2. The total amount of triglycerides (TG) did not vary significantly between the hair and scalp. Regarding the relationship between the amount of bacteria and TG, the total amount of TG tended to increase slightly when the total number of bacteria increased in groups 1 and 2 (for both hair and scalp) but not in group 3.
