• Valentina Urbano, Jan Novy, Kaspar Schindler, Stephan Rüegg, Vincent Alvarez, Frédéric Zubler, Mauro Oddo, Jong Woo Lee, and Andrea O Rossetti.
• Department of Neurology, Lausanne University Hospital and University of Lausanne, Switzerland.
• Swiss Med Wkly. 2021 Mar 15; 151: w20477.

BackgroundContinuous EEG (cEEG) is increasingly used in critically ill patients, but it is more resource-intensive than routine EEG (rEEG). In the US, cEEG generates increased hospitalisation charges. This study analysed hospital-related reimbursement for participants in a Swiss multicentre randomised controlled trial that assessed the relationship of cEEG versus repeated rEEG with outcome.MethodsWe used data of the CERTA study (NCT03129438), including demographics, clinical variables and reimbursement for acute hospitalisations after the Swiss Diagnosis Related Groups billing system. In addition to a comparison between EEG intervention groups, we explored correlations with several clinical variables, using uni- and multivariate analyses.ResultsIn total, 366 adults were analysed (184 cEEG, 182 rEEG); 123 (33.6%) were women, mean age was 63.8 years (± 15). Median hospitalisation reimbursement was comparable across EEG groups in univariate analysis: cEEG CHF 89,631 (interquartile range [IQR] 45,635–159,994); rEEG CHF 73,017 (IQR 43,031–158,565); p = 0.432. However, multivariate regression disclosed that increasing reimbursement mostly correlated with longer acute hospitalisation (p <0.001), but also with cEEG (p = 0.019) and lack of seizure / status epilepticus detection (a surrogate of survival, p = 0.036).ConclusionIn a Swiss Diagnosis Related Groups billing system applied to critically ill adults, reimbursement largely depends on duration of acute hospital stay, whereas cEEG and lack of seizure/ status epilepticus detection also contribute to the bill. This differs from the USA, where charges are directly increased by cEEG.

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