British Journal of Anaesthesia, 2001, Vol. 87, No. 2 223-228
© 2001 The Board of Management and Trustees of the British Journal of Anaesthesia
Clinical Investigations |
Continuous intra-jugular venous blood-gas monitoring with the Paratrend 7 during hypothermic cardiopulmonary bypass
1Department of Emergency and Critical Care Medicine and 2Department of Anesthesiology, Niigata University Faculty of Medicine, 1-757 Asahimachi, Niigata 951-8150, Japan*Corresponding author
Presented, in part, at the annual meeting of the American Society of Anesthesiologists, Dallas, USA, October 18–22, 1999.
We measured the accuracy of the continuous intra-vascular blood-gas monitoring system (Paratrend 7, PT7) placed in the jugular venous bulb in 18 adult patients having cardiac or aortic surgery with hypothermic cardiopulmonary bypass (CPB). After induction of anaesthesia, a PT7 sensor was inserted through a 20-gauge venous catheter into the right jugular venous bulb. Blood samples were drawn from the venous catheter and measured with a blood gas analyser (BGA). Five to eight paired measurements using the PT7 and blood samples were made per patient, and bias and precision were calculated for each patient using the Bland-Altman method. The ranges for the blood sample measurements were: pH 7.12 to 7.59, PCO2 3.7 to 9.6 kPa, PO2 3.5 to 16.0 kPa, oxygen saturation 40 to 99%, bicarbonate 18.6 to 34.4 mmol l–1, and base excess –7.8 to 12.5 mmol l–1. Bias and precision values were 0.014/0.071 for pH, 0/0.90 kPa for PCO2, and –0.16/1.18 kPa for PO2. These values were comparable with those previously made on arterial blood. However, precision for oxygen saturation in each patient varied 2.3 to 23.6% (95% CI: 6.3 to 12.9%), which was unsatisfactory for clinical measurements. Deep hypothermia (
19.6°C) and marked haemodilution (13.5%) during CPB did not influence the reliability of the PT7 sensor. Thus, we concluded that continuous intra-jugular venous blood-gas monitoring is clinically feasible using the PT7 and may provide valuable information during CPB.
Br J Anaesth 2001; 87: 223–8
CiteULike 
Connotea 
Del.icio.us What's this?
This article has been cited by other articles:
|
|
 |
|
  J. A. Langton and A. Hutton Respiratory gas analysis CEACCP, February 1, 2009; 9(1): 19 - 23. [Full Text] [PDF]
|
|
|
|
 |
|
 M. Ganter and A. Zollinger Continuous intravascular blood gas monitoring: development, current techniques, and clinical use of a commercial device Br. J. Anaesth., September 1, 2003; 91(3): 397 - 407. [Abstract] [Full Text] [PDF]
|
|