title: Noncontact vital sign monitoring system for isolation unit (casualty care system).
abstract: For measuring the vital signs of casualties inside an isolation unit, we developed a noncontact vital sign monitoring system using a microwave radar. The system was tested on eight healthy volunteers ranging in age from 30 to 48 years. The heart and respiratory rates derived by the microwave radar correlated with the heart and respiratory rates determined by electrocardiogram and respiratory sensor (r = 0.98, p < 0.0001 for heart rate; r = 0.84, p < 0.01 for respiratory rate). The exhaled CO and CO2, as a measure of trauma injury, were measured using an exhaled gas analyzer. The CO and CO2 concentrations were found to average 3.8 +/- 4.3 ppm and 2.9 +/- 0.4%, respectively. The expired air temperature and body temperature, as indicators of hemorrhagic hypothermia, averaged 31.8 +/- 1.7 degrees C and 36.2 +/- 0.4 degrees C, respectively. The results show that our system is promising for future prehospital application in determining casualty conditions for fluid infusions by the Casualty Care System intravenous lines.
authors.affiliation: Department of Management Systems Engineering, Tokyo Metropolitan University, 6-6, Asahigaoka, Tokyo, Japan. tmatsui@cc.tmit.ac.jp
authors.forename: Takemi
authors.initials: T
authors.lastname: Matsui
authors.forename: Shinji
authors.initials: S
authors.lastname: Gotoh
authors.forename: Ikuo
authors.initials: I
authors.lastname: Arai
authors.forename: Hidemi
authors.initials: H
authors.lastname: Hattori
authors.forename: Makoto
authors.initials: M
authors.lastname: Fujita
authors.forename: Kiyohaya
authors.initials: K
authors.lastname: Obara
authors.forename: Kazunori
authors.initials: K
authors.lastname: Masuoka
authors.forename: Shingo
authors.initials: S
authors.lastname: Nakamura
authors.forename: Bonpei
authors.initials: B
authors.lastname: Takase
authors.forename: Masayuki
authors.initials: M
authors.lastname: Ishihara
authors.forename: Makoto
authors.initials: M
authors.lastname: Kikuchi
mesh_terms: D000328:Adult; D002245:Carbon Dioxide / Q000032:analysis; D045853:Exhalation / Q000502:physiology; D006801:Humans; D008872:Microwaves; D008875:Middle Aged; D008887:Military Medicine / Q000295:instrumentation*; D008889:Military Personnel; D008991:Monitoring, Physiologic / Q000295:instrumentation* / Q000379:methods; D010356:Patient Isolation; D011659:Pulmonary Gas Exchange; D011825:Radar; D014947:Wounds and Injuries / Q000175:diagnosis*
chemical_list: D002245:Carbon Dioxide