title: [Transcutaneous P(CO2) (TcP(CO2)) reflects Pa(CO2) of previous 1 or 2 minutes].
abstract: BACKGROUND
  TcP(CO2) has been known to have delayed response compared with Pa(CO2).
  
  
  METHODS
  We examined the degree of response delay in human adults. TOSCA500 (Radiometer) was used to measure TcP(CO2). Arterial blood was withdrawn every 1 minute for 20 times. Pa(CO2) was measured with Bayer348 blood gas analyzer. TcP(CO2) value was recorded simultaneously.
  
  
  RESULTS
  TcP(CO2) values which are forwarded 0, 1, 2, 3 and 4 minutes are examined against Pa(CO2) by means of Bland and Altman analysis. Means of the difference in TcP(CO2) and Pa(CO2) are 0.9 mmHg, +0.9 mmHg, +1.0 mmHg, + 1.0 mmHg, + 1.0 mmHg and 2 SD are +/- 7.1 mmHg, +/- 6.2 mmHg, +/- 6.2 mmHg, +/- 7.2 mmHg, +/- 8.2 mmHg, respectively (N=105).
  
  
  CONCLUSIONS
  In human adults values of TcP(CO2) measured by TOSCA500 are 1 or 2 minutes late compared with values of Pa(CO2) and considered to be a good monitor of Pa(CO2).
authors: Department of Anesthesia, Atsugi City Hospital, Atsugi 243-8588.
authors: Toshimichi
authors: T
authors: Kuzuta
authors: Masayuki
authors: M
authors: Kamide
authors: Sohei
authors: S
authors: Kagawa
mesh_terms: D000328:Adult; D001785:Blood Gas Monitoring, Transcutaneous / Q000295:instrumentation; D002245:Carbon Dioxide / Q000097:blood*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010313:Partial Pressure
chemical_list: D002245:Carbon Dioxide