Preoperative Oral Care Reduces The Bacterial Adhesion To Endotracheal Tubes

2016 Fiscal Year Final Research Report

• Project/Area Number: 26463075
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Surgical dentistry
• Research Institution: Iwate Medical University
• Principal Investigator: Endo Chie 岩手医科大学, 歯学部, 講師 (10306037)
• Co-Investigator(Renkei-kenkyūsha): JOH Shigeharu 岩手医科大学, 歯学部, 教授 (20154411) ; SHIMOYAMA Yu 岩手医科大学, 歯学部, 講師 (90453331)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 気管チューブ / 口腔レンサ球菌 / 経口挿管

Outline of Final Research Achievements

We assessed the number of total bacteria and streptococci on the extubated endotracheal tubes from the patients with/without preoperative oral cares (OC and NOC groups). Results indicated that bacteria of more than 1000 CFU per tube were detected in all samples, in which streptococci were predominant. The numbers of total bacteria and streptococci that adhered to the tubes in OC group were significantly lower than those in NOC group. However, there was no significant correlation in both OC and NOC groups between the numbers of bacteria on the endotracheal tube and those in the saliva samples, suggesting that the plaque streptococci could preferentially adhere to the tube. Further, the in vitro adhesion assay revealed that mutans streptococci have the highest adhesive ability to endotracheal tubes. Consequently, significant number of bacteria, especially mutans streptococci, can adhere to endotracheal tubes during operation, which may be controlled by preoperative oral cares.

Free Research Field

歯科麻酔学分野