Abstract
Introductionhigh-oxygen nasal cannulas in patients with respiratory failure secondary to SARS-CoV-2 pneumonia have not been studied from a cost-effectiveness point of view. MethodsRetrospective analysis of patients who had entered the COVID-area of an intensive medicine service in a third reference hospital, between March-December 2020. An effectiveness cost analysis was carried out comparing 2therapeutic decisions: the experimental strategy was defined as a mixed strategy consisting of the initial application of high flow nasal oxygen (HFNO) and application of VMI only to HFNO failures. The optimal rational decision was defined as maximizing expected profit, and economic efficiency was assessed by calculating the Incremental Cost-Effectiveness Ratio (ICER) for years of life gained. ResultsOf the 185 patients tested, 101 (55%) received invasive mechanical ventilation immediately and 84 (45%) were treated with HFNO at the outset. In the cost-effectiveness analysis, comparing both therapeutic strategies, the probability that the experimental strategy would be more effective was 0.974, reaching statistical significance: Difference in average proportions -0.113; 95% CI:-0.018 to -0.208. This corresponds to an NNT of 9 patients. The optimal decision was HFNO's strategy followed by VMI in HFNO failures. This option had an RCEI of 5582 euros per year of life gained. ConclusionsIt is important to establish in the future reliable markers in the use of HFNO so that this therapy improves its cost-effective benefits.
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