Why the study?
Does tissue oximetry detect hypoperfusion better than standard clinical criteria in postoperative patients?
Does tissue oximetry detect hypoperfusion better than standard clinical criteria in postoperative patients?
Tissue oximetry may identify hypoperfusion in postoperative patients that is missed by standard clinical criteria such as urine output.
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Tissue oximetry may identify postoperative hypoperfusion missed by standard criteria; challenges consensus but remains hypothesis-generating pending validation.
Subcutaneous tissue oxygen tension was measured as an index of perfusion in 44 postoperative patients. Hypoperfusion was defined as suboptimal tissue oxygen tension unresponsive to increased inspired oxygen but becoming responsive after increased fluid infusion. Twelve of thirty patients who underwent major abdominal and flank operations were found to be suboptimally perfused by this definition despite adequate fluid maintenance according to standard clinical criteria including urine output. Apparently, a significant number of postoperative abdominal surgery patients are not optimally perfused, and this state is not recognized by the present clinical criteria. Tissue oximetry may be a useful objective method of assessing tissue perfusion.
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Jönsson et al. (1987) studied this question.
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