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Minerva anestesiologica · Feb 2021
Platelet morphological indices on ICU admission predict mortality in septic but not in non-septic patients.
- Alberto Fogagnolo, Fabio S Taccone, Giulia Benetto, Federico Franchi, Sabino Scolletta, Antonella Cotoia, Iryna Kozhevnikova, Carlo A Volta, and Savino Spadaro.
- Unit of Anesthesia and Intensive Care, Department of Morphology, Surgery and Experimental Medicine, Sant'Anna University Hospital, University of Ferrara, Ferrara, Italy - alberto.fogagnolo@gmail.com.
- Minerva Anestesiol. 2021 Feb 1; 87 (2): 184-192.
BackgroundThrombocytopenia is associated with worse outcomes in critically ill patients. The clinical relevance of other platelets indices is less studied. We investigated the ability of the platelets distribution width (PDW) and the mean platelet volume (MPV) to predict mortality in critically ill patients. We hypothesized that the prognostic values of PDW and MPV could be different in septic and non-septic patients.MethodsWe prospectively analyzed patients with an expected ICU length of stay ≥48 hours. Repeated measurements of PDW and MPV were considered (on ICU admission and up to day 5 thereafter). The primary outcome was to investigate the ability of PDW and MPV to predict 90-day mortality in septic and non-septic patients.ResultsWe included in the study 234 patients of which 31% patients were septic. 90-day mortality was 39% in septic and 27% non-septic patients. PDW and MPV values on admission were 12.5±2.5% and 10.7±1.1 fL, respectively. The AUROC of PDW values on admission to predict 90-day mortality in septic patients was 0.813, being higher than those in non-septic patients (0.550, P<0.001). Similarly, the AUROC for MPV in septic patients was higher than non-septic patients (0.55, P<0.001). The combined analysis of platelets morphological indices and lactate improved the predictive accuracy (PDW and lactate AUROC=0.870; MPV and lactate AUROC=0.867).ConclusionsPlatelet morphological indices are independent predictor of 90-day mortality in septic patients but not in non-septic patients. A combined analysis of platelets morphological indices and lactate in septic patients resulted in improved prediction of mortality.
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