Author: Bagnato, Gianluca; La Rosa, Daniela; Ioppolo, Carmelo; De Gaetano, Alberta; Chiappalone, Marianna; Zirilli, Natalia; Viapiana, Valeria; Tringali, Maria Concetta; Tomeo, Simona; Aragona, Caterina Oriana; Napoli, Francesca; Lillo, Sara; Irrera, Natasha; Roberts, William Neal; Imbalzano, Egidio; Micari, Antonio; Ventura Spagnolo, Elvira; Squadrito, Giovanni; Gangemi, Sebastiano; Versace, Antonio Giovanni
Title: The COVID-19 Assessment for Survival at Admission (CASA) Index: A 12 Months Observational Study Cord-id: d7xa9v8i Document date: 2021_9_30
ID: d7xa9v8i
Snippet: Objective: Coronavirus disease 2019 (COVID-19) is a disease with a high rate of progression to critical illness. However, the stratification of patients at risk of mortality is not well defined. In this study, we aimed to define a mortality risk index to allocate patients to the appropriate intensity of care. Methods: This is a 12 months observational longitudinal study designed to develop and validate a pragmatic mortality risk score to stratify COVID-19 patients aged ≥18 years and admitted t
Document: Objective: Coronavirus disease 2019 (COVID-19) is a disease with a high rate of progression to critical illness. However, the stratification of patients at risk of mortality is not well defined. In this study, we aimed to define a mortality risk index to allocate patients to the appropriate intensity of care. Methods: This is a 12 months observational longitudinal study designed to develop and validate a pragmatic mortality risk score to stratify COVID-19 patients aged ≥18 years and admitted to hospital between March 2020 and March 2021. Main outcome was in-hospital mortality. Results: 244 patients were included in the study (mortality rate 29.9%). The Covid-19 Assessment for Survival at Admission (CASA) index included seven variables readily available at admission: respiratory rate, troponin, albumin, CKD-EPI, white blood cell count, D-dimer, Pa02/Fi02. The CASA index showed high discrimination for mortality with an AUC of 0.91 (sensitivity 98.6%; specificity 69%) and a better performance compared to SOFA (AUC = 0.76), age (AUC = 0.76) and 4C mortality (AUC = 0.82). The cut-off identified (11.994) for CASA index showed a negative predictive value of 99.16% and a positive predictive value of 57.58%. Conclusions: A quick and readily available index has been identified to help clinicians stratify COVID-19 patients according to the appropriate intensity of care and minimize hospital admission to patients at high risk of mortality.
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