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- Title
Diagnostic yield of routine daily blood culture in patients on veno-arterial extracorporeal membrane oxygenation.
- Authors
de Roux, Quentin; Renaudier, Marie; Bougouin, Wulfran; Boccara, Johanna; Fihman, Vincent; Lepeule, Raphaël; Cherait, Chamsedine; Fiore, Antonio; Hemery, François; Decousser, Jean-Winoc; Langeron, Olivier; Mongardon, Nicolas
- Abstract
<bold>Background: </bold>Bloodstream infections (BSIs) are frequent on veno-arterial extracorporeal membrane oxygenation (V-A ECMO). Performing routine blood cultures (BCs) may identify early paucisymptomatic BSIs. We investigated the contribution of systematic daily BCs to detect BSIs on V-A ECMO.<bold>Methods: </bold>This was a retrospective study including all adult patients requiring V-A ECMO and surviving more than 24 h. Our protocol included routine daily BCs, from V-A ECMO insertion up to 5 days after withdrawal; other BCs were performed on-demand.<bold>Results: </bold>On the 150 V-A ECMO included, 2146 BCs were performed (1162 routine and 984 on-demand BCs); 190 (9%) were positive, including 68 contaminants. Fifty-one (4%) routine BCs revealed BSIs; meanwhile, 71 (7%) on-demand BCs revealed BSIs (p = 0.005). Performing routine BCs was negatively associated with BSIs diagnosis (OR 0.55, 95% CI [0.38; 0.81], p = 0.002). However, 16 (31%) BSIs diagnosed by routine BCs would have been missed by on-demand BCs. Independent variables for BSIs diagnosis after routine BCs were: V-A ECMO for cardiac graft failure (OR 2.43, 95% CI [1.20; 4.92], p = 0.013) and sampling with on-going antimicrobial therapy (OR 2.15, 95% CI [1.08; 4.27], p = 0.029) or renal replacement therapy (OR 2.05, 95% CI [1.10; 3.81], p = 0.008). Without these three conditions, only two BSIs diagnosed with routine BCs would have been missed by on-demand BCs sampling.<bold>Conclusions: </bold>Although routine daily BCs are less effective than on-demand BCs and expose to contamination and inappropriate antimicrobial therapy, a policy restricted to on-demand BCs would omit a significant proportion of BSIs. This argues for a tailored approach to routine daily BCs on V-A ECMO, based on risk factors for positivity.
- Publication
Critical Care, 2021, Vol 25, Issue 1, p1
- ISSN
1364-8535
- Publication type
journal article
- DOI
10.1186/s13054-021-03658-7