ABSTRACT
Introduction: COVID-19, as of 9 June 2020, had been responsible for 404,396 deaths worldwide. Throughout the pandemic, IRCU and ICU directly cared for patients with severe or very severe respiratory failure due to COVID19 pneumonia. Objective(s): To determine if N-acetyl-cysteine (NAC) could be associated with lower mortality risk. Methodology: 1141 patients from March to May 2020 admitted to the ICU and IRCU of the Fundacion Jimenez Diaz were analysed. Patients with <3 days of hospital admission and those with CURB-65 equal to or <0 were excluded. A multivariate regression logistics models have been used to respond to our hypothesis and investigate the relationship between each variable and the mortality. Result(s): Of all patients analyzed, 44% received treatment with NAC associated with other drugs according to established protocols. Of these, 55% were male, most non-smokers with a mean age of 74.43 years. In table 2 we describe statistically significant predictive parameters associated with a decreased risk of mortality in severe or very severe patients with an area AUC of 0.80 Conclusion(s): Adjuvant treatment with NAC in severe or very severe COVID-19 pneumonia is associated with a significantly lower risk of mortality by 30% in elderly patients, principally males, and with associated co-morbidities.