摘要:

The use of a combined electrochemical and fibreoptic continuous intra-arterial blood gas sensor is described. The purpose of the study was to evaluate the performance of the sensor in 10 patients in the intensive therapy unit following insertion through a femoral arterial cannula. To our knowledge this is the fast published study on the valuation of an intravascular blood gas sensor through a femoral arterial cannula. A total of 71 sets of data comparing the sensor with the blood gas analyser were obtained. The bias and precision for pH, Pco2and Po2were 0.006 and 0.07pH units, 0.2 and 1.65kPa (4.6% and 29%) and 0.8 and 2.7kPa (5.1 % and 14.3%) respectively. There was a degree of imprecision of the PCO2sensor, the reasons for which are discussed. In summary, the intra-arterial sensor functioned well when inserted into the femoral artery in post-cardiopulmonary bypass patients. There were no complications attributable to sensor placement.

ISSN:0309-1902    

DOI:10.3109/03091909409030246

出版商:Taylor&Francis    

年代:1994

数据来源: Taylor

摘要:

A miniaturized universal testing machine, HYOMEX, designed for biomechanically testing spinal structures of an anaesthetized research animal, such as a pig, is presented. A variety of mechanical applications such as static and dynamic tests, creep and relaxation tests, and fatigue tests with frequencies up to 20 Hz are possible. The system permits force control as well as displacement control. Continuous surveillance is made possible through interfacing the system to a computer. An application is presented where the viscoelastic behaviour in a porcine lumbar spine was measured.

ISSN:0309-1902    

DOI:10.3109/03091909409030247

出版商:Taylor&Francis    

年代:1994

数据来源: Taylor

摘要:

This paper describes the implementation of a multiplying digital-to-analogue (D/A) converter as a programmable waveform generator to be used in an electrical impedance tomography (EIT) system. Different digital techniques of generation waveforms are considered and the advantages and disadvantages of the chosen slope-plus-pedestal technique are presented. A wire-wrapped prototype system has been designed, and from measured frequency spectra the total harmonic distortion can be calculated to values between 1.1 and 2.9% depending on frequency.

ISSN:0309-1902    

DOI:10.3109/03091909409030248

出版商:Taylor&Francis    

年代:1994

数据来源: Taylor

摘要:

Non-invaswe oscillometric blood pressure and pulse measured by an Omron HEM-703CP monitor were compared with arterial values obtained from direct measurements of the radial artery. An excellent correlation and agreement was found between the two methods (systolic r=0.99; diastolic r=0.97; pulse r=0.99), although there was some variability among individual subjects. The range of difference between them was 0 to l. mmHg for systolic and—6 to + 5mmHg for diastolic pressures. When tested on the bench using the Metron QA-1280 non-invasive blood pressure analyser the HEM-703CP monitor rarely exhibited errors exceeding 2–3 mmHg over a measurement range of 50–200 mmHg.

ISSN:0309-1902    

DOI:10.3109/03091909409030249

出版商:Taylor&Francis    

年代:1994

数据来源: Taylor

ISSN:0309-1902    

DOI:10.3109/03091909409030250

出版商:Taylor&Francis    

年代:1994

数据来源: Taylor

摘要:

Complications of Coronary AngioplastyBy A. Black, V. Anderson and S. G. Ellis. Marcel Dekker, New York, 1991, pp. 264. US $99.75. ISBN 0824784405.Chemical Sensor Technology, Vol. 2 Edited by T. Seiyama. Elsevier, Amsterdam, pp. 304. Dfl340.00, US $174.25. ISBN 0444987843.Medical Market Integration in the EECBy P. Evers. MDIS Publications Ltd, Chichester 1991, pp. 161. US$395.Ward's Anaesthetic Equipment, 3rd edn By A. Davey, J.T.B. Moyle and C.S. Ward. W.B. Saunders, London, 1992, pp. 391.£35. ISBN 0702014354.Evolution in Dialysis AdequacyEdited by V. Bonomini. 1993, SFr 198, pp. 196. Karger, Basel, ISBN 3805556837.Monitoring in AnesthesiaBy L. J. Saidman and N. T. Smith. Butterworth-Heinemann, London, 1993, L75.00, ISBN 0750609067Biomedical EngineeringBy A. E. Profio, 1993. 280pp. E49.50, Wiley, New York, ISBN 0471577685

ISSN:0309-1902    

DOI:10.3109/03091909409030251

出版商:Taylor&Francis    

年代:1994

数据来源: Taylor

ISSN:0309-1902    

DOI:10.3109/03091909409030252

出版商:Taylor&Francis    

年代:1994

数据来源: Taylor

ISSN:0309-1902    

DOI:10.3109/03091909409030253

出版商:Taylor&Francis    

年代:1994

数据来源: Taylor

ISSN:0309-1902    

DOI:10.3109/03091909409030254

出版商:Taylor&Francis    

年代:1994

数据来源: Taylor