Sökning: "Microdialysis"

Visar resultat 1 - 5 av 236 avhandlingar innehållade ordet Microdialysis.

1. 1. Microdialysis Sampling of Macro Molecules : Fluid Characteristics, Extraction Efficiency and Enhanced Performance

   Författare :Jiangtao Chu; Andreas Dahlin; Klas Hjort; Jan Kehr; Uppsala universitet; []
   Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; microdialysis; high molecular weight cut-off; fluid characteristics; fluid recovery; extraction efficiency; biomarker; microporous membrane; macromolecule transport; transmembrane; large pore; surface modification; pluronic; dextran; in vitro; microdialysis catheter; Teknisk fysik med inriktning mot mikrosystemteknik; Engineering Science with specialization in Microsystems Technology; Teknisk fysik med inriktning mot materialvetenskap; Engineering Science with specialization in Materials Science;

   Sammanfattning : In this thesis, fluid characteristics and sampling efficiency of high molecular weight cut-off microdialysis are presented, with the aim of improving the understanding of microdialysis sampling mechanisms and its performance regarding extraction efficiency of biological fluid and biomarkers.Microdialysis is a well-established clinical sampling tool for monitoring small biomarkers such as lactate and glucose. LÄS MER

3. 2. Cutaneous microdialysis : a technique for human in vivo sampling

   Författare :Thomas Andersson; Linköpings universitet; []
   Nyckelord :MEDICINE; MEDICIN;

   Sammanfattning : Microdialysis enables in vivo sampling of endogenous and exogenous substances in the interstitial fluid. A probe equipped with a tubular semi-permeable dialysis membrane is inserted into the skin, and perfused with a physiological solution. LÄS MER

4. 3. Intraperitoneal microdialysis : technique and results

   Författare :Kjell Jansson; Lars Norgren; Carl-Henrik Nordström; Örebro universitet; []
   Nyckelord :MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; kirurgi; Surgery; Kirurgi; Kirurgi; Surgery;

   Sammanfattning : Microdialysis has recently developed from a laboratory research method of animals to a useful clinical tool to evaluate parameters suggesting tissue ischemia. It is now used in neurosurgery, plastic surgery and liver transplantation. LÄS MER

5. 4. Methodological aspects on microdialysis sampling and measurements

   Författare :Pernilla Abrahamsson; Ola Winsö; Michael Haney; Anna-Maja Åberg; Urban Ungerstedt; Umeå universitet; []
   Nyckelord :MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Microdialysis; liver ischemia; heart ischemia; epicardium; liver parenchyma; CMA 600; metabolism; Anaesthetics and intensive care; Anestesiologi och intensivvård; anestesiologi; Anaesthesiology;

   Sammanfattning : Background:     The microdialysis (MD) technique is widely spread and used both experi­mentally and in clinical practice. The MD technique allows continuous collection of small molecules such as glucose, lactate, pyruvate and glycerol. Samples are often analysed using the CMA 600 analyser, an enzymatic and colorimetric analyser. LÄS MER

7. 5. Microdialysis and Intensive Care. Clinical and experimental studies

   Författare :Per Ederoth; Anestesiologi och intensivvård; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Anaesthesiology; traumatic brain injury; glucose; glycerol; lipolysis; epidural; postoperative analgesia; experimental pancreatitis; human; blood-brain barrier; morphine; pharmacokinetics; Microdialysis; intensive care; Anestesiologi; intensivvård;

   Sammanfattning : Microdialysis was used to monitor local concentrations of energy metabolites in different organs, and to study the pharmacokinetics of morphine over the blood-brain barrier in intact and injured brain tissue in conditions treated in the Intensive Care Unit. After major abdominal or thoracoabdominal surgery, postoperative thoracic epidural analgesia resulted in higher glycerol concentrations in the deltoid subcutaneous adipose tissue, implying increased lipolysis, on the third postoperative day as compared to intravenous infusion of morphine, possibly due to a locally increased sympathetic tone. LÄS MER