Perioperative goal-directed therapy with uncalibrated pulse contour methods: impact on fluid management and postoperative outcome

Editor—The conclusions of the very recent meta-analysis by Michard and colleagues¹ in the British Journal of Anaesthesia is that the use of perioperative goal-directed therapy (GDT) with uncalibrated pulse contour (uPC) techniques is associated with a decrease in postoperative morbidity, but not associated with an increase in total fluid administration. An accompanying editorial has analysed in detail some methodological issues related to this and other systematic reviews, but has not challenged its conclusions.² In fact, the editorial expanded these conclusions claiming that this systematic review provides us with the best currently available evidence on this topic. Although these conclusions seem logical, and may even be true, a more careful examination of this meta-analysis leads me to believe that its conclusions should be very different.

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