Prediction of shock status by Quantified capillary refill time

2014 Fiscal Year Final Research Report

• Project/Area Number: 24592742
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Emergency medicine
• Research Institution: Yokohama City University
• Principal Investigator: MORIMURA Naoto 横浜市立大学, 医学(系)研究科(研究院), 教授 (20239685)
• Co-Investigator(Kenkyū-buntansha): GOTO Takahisa 横浜市立大学, 医学研究科, 教授 (00256075) ; SAKAMOTO Tetsuya 帝京大学, 医学部, 教授 (40365979)
• Research Collaborator: OHI Yasufumi ; MATSUMORI Kyoko ; OTSUKA Tsuyoshi ; MUGURUMA Takashi
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 毛細血管再充満時間 / ショック / パルスオキシメータ / 乳酸

Outline of Final Research Achievements

In this study, we tried to quantify the capillary refill time (Q-CRT) measured from a change of light intensity in near infrared and red light before and after the compression of finger nail bed based on a principle of pulse oximeter. Mean value of Q-CRT of healthy adult volunteers was 1.6 seconds. Since there was the difference of measured value of Q-CRT between the examiners, we developed the new device for measurement of Q-CRT by the automatic and constant pneumatic compression to finger nail bed. In addition, we focused on the difference of light intensity during compression of finger nail bed between infra-red and red light (ΔAb). TheΔAb more than 0.06 was well correlated to the status with blood lactate level more than 2.0 mmol/l.

Free Research Field

救急医学・集中治療医学