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Träfflista för sökning "WFRF:(Norgren M) srt2:(2000-2004)"

Search: WFRF:(Norgren M) > (2000-2004)

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  • Engellau, Lena, et al. (author)
  • Measurements before endovascular repair of abdominal aortic aneurysms : MR imaging with MRA vs. angiography and CT
  • 2003
  • In: Acta Radiologica. - : SAGE Publications. - 0284-1851 .- 1600-0455. ; 44:2, s. 177-184
  • Journal article (peer-reviewed)abstract
    • Purpose: 1) To compare measurements obtained with MR imaging (MRI)/contrast-enhanced MR angiography (CE MRA) with measurements obtained with angiography (DSA) and CT, for stent-graft sizing of abdominal aortic aneurysms (AAA). 2) To compare MRA measurements obtained with the two post processing techniques MIP (maximum intensity projection) and VRT (3D volume rendering technique).Material and Methods: The prospective study included 20 consecutive patients with AAA identified by DSA and CT as suitable for endovascular repair. For the study, MRI/CE MRA was performed. Five measurement variables for stent-graft sizing were chosen. Comparisons were made between MRI/CE MRA, DSA and CT, and between observers. Comparisons were also made between MIP and VRT.Results: Significantly shorter lengths were obtained with MRA-MIP than with DSA. Three out of six diameter measurements were significantly smaller on MRI/CE MRA than on DSA and CT. No significant differences were found between the observers. One diameter measurement was significantly smaller on MIP than on VRT, while the other measurements showed no significant differences.Conclusion: The length measurements obtained with MRA-MIP were probably more correct than those with DSA. For more reliable diameter measurements with CE MRA, improvements of the technique, including VRT reconstructions and a standardized determination of the vessel boundaries, are needed.
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  • Jansson, Kjell, et al. (author)
  • Human intraperitoneal microdialysis : increased lactate/pyruvate ratio suggests early visceral ischaemia
  • 2003
  • In: Scandinavian Journal of Gastroenterology. - : Informa UK Limited. - 0036-5521 .- 1502-7708. ; 38:9, s. 1007-1011
  • Journal article (peer-reviewed)abstract
    • Background: Previous studies suggest that visceral ischaemia precedes shock and multiple organ failure, though methods for studying humans are lacking. We aimed to evaluate intraperitoneal microdialysis, a new technique for detecting splanchnic ischaemia in clinical practice. Methods: Right-sided hemicolectomy was performed in eight patients who were studied by microdialysis postoperatively for glucose, lactate, pyruvate and glycerol levels. Results: Six of the eight patients showed a normal postoperative course and had lactate/pyruvate ratios between 7.1 and 21.7, glucose between 4.5 and 14.3 r mmol/L and glycerol between 10.4 and 296 r 7 mol/L. In one patient, intraperitoneal lactate/pyruvate ratio and glycerol increased and glucose decreased 5 r h before low oxygenation appeared. Another patient exhibited a period of increased lactate/pyruvate ratio before a period of atrial fibrillation. Conclusion: Intraperitoneal microdialysis was performed safely. Two out of the eight patients exhibited changes of metabolic markers followed by clinical symptoms that were probably related to transient visceral ischaemia. Our findings suggest that intraperitoneal microdialysis may become a useful tool for monitoring splanchnic ischaemia in clinical practice.
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  • Result 1-10 of 11

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