British journal of anaesthesia
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Multicenter Study Comparative Study
Comparison of two versions of the Vigileo-FloTrac system (1.03 and 1.07) for stroke volume estimation: a multicentre, blinded comparison with oesophageal Doppler measurements.
Our aim was to evaluate the validity of stroke volume measurements obtained using the Vigileo-FloTrac system in comparison with those obtained using oesophageal Doppler considered as a reference. ⋯ The precision of stroke volume estimation using Vigileo-FloTrac has improved with the second version of the software (1.07), but remains insufficient to allow the replacement of the reference technique in the population studied.
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Increasing numbers of patients prescribed clopidogrel and aspirin are presenting for non-elective surgery. No consensus on the timing of surgery exists after withdrawal of antiplatelet and tests of platelet function are not routinely available. The Thrombelastography Platelet Mapping (TEG-PM) assay is designed to assess platelet inhibition secondary to antiplatelet therapy. We assessed its ability to detect platelet inhibition in preoperative acute surgical patients. ⋯ TEG-PM can identify statistically significant platelet inhibition after antiplatelet therapy; however, the overlap in platelet receptor inhibition between the three groups is likely to limit the clinical usefulness of this test.