Key result
Mixed venous oxygen saturation below 65% for at least one hour predicted postoperative complications in 90% of patients, compared to 0% in those with saturation above 65%.
Why the study?
Does on-line monitoring of mixed venous oxygen saturation predict postoperative complications in patients after thoracotomy?
Observational (n=19)
Does on-line monitoring of mixed venous oxygen saturation predict postoperative complications in patients after thoracotomy?
Absolute Event Rate: 90% vs 0%
On-line monitoring of mixed venous oxygen saturation after thoracotomy can effectively predict the occurrence of postoperative complications such as hypotension and arrhythmias.
Low SvO2 may predict complications after thoracotomy; this observational link leaves open whether monitoring should guide practice.
On-line monitoring of MVo2 sat. in vivo by means of fibreoptic reflectometry was studied in 19 patients as to its predictive value during the postoperative course after thoracotomy for periods up to 60 hours. In all but one of the 10 patients with MVo2 sat. less than 65% for at least one hour complications occurred. A fall of MVo2 sat. of more than 5% or a value below 60% predicted a period of hypotension in six patients. In two of them this coincided with a period of ventricular arrhythmias. In those with MVo2 sat. greater than 65% no postoperative complications such as arrhythmias, shock, respiratory dysfunction or oliguria took place.
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Krauss et al. (1975) conducted an observational in Postoperative course after cardiothoracic surgery (n=19). Mixed venous oxygen saturation (MVo2) < 65% vs. MVo2 > 65% was evaluated on Postoperative complications. Mixed venous oxygen saturation below 65% for at least one hour predicted postoperative complications in 90% of patients, compared to 0% in those with saturation above 65%.
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