Technology and health care : official journal of the European Society for Engineering and Medicine
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Technol Health Care · Apr 1996
An intravascular microdialysis sampling system suitable for application in continuous biochemical monitoring of glucose and lactate.
Direct sensor implantation for continuous biochemical monitoring has proved disappointing, but microdialysis sampling devices can serve as a biocompatible patient-sensor interface. We propose a novel "MiniShunt" extracorporeal microdialysis sampling circuit designed to sample core blood, and report the performance of different microdialysis probe membrane types and sizes with pumped and non-pumped blood flow in anaesthetised dogs. Discrete microdialysate and plasma samples collected during glucose and lactate monitoring were analysed with a YSI analyzer and showed microdialysis efficiency (% relative recovery) in excess of 95% for both analytes using fibres of greater than 70 mm2 internal surface area. Pumped veno-venous extracorporeal blood microdialysis sampling of this type could provide a suitable interface for future multi-analyte on-line biosensor applications in critically ill patients.
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Bed chest X-rays carried out in an Intensive Care Unit (ICU) are an important means of patient monitoring. To get the starting points for standardization of the documentation of X-ray findings, we examined course and contents of the daily X-ray conference in an ICU. We video-taped the conferences and registered its vocabulary. ⋯ Sorting and viewing the X-rays took 60 s. Main disruptions were related to non-availability of X-rays and clinical patient data. Clinical information reported during the discussion is rarely mentioned in the dictated findings.