Purpose: Community transmission of SARS-CoV-2 was detected in Spain in February 2020, with 216% intensive care unit (ICU) capacity expanded in Vitoria by March 18 th , 2020. Methods:We identified patients from the two public hospitals in Vitoria who were admitted to ICU with confirmed infection by SARS-CoV-2. Data reported here were available in March 31th, 2020. Mortality was assessed in those who completed 7-days of ICU stay. Results: We identified 48 patients (27 males) with confirmed SARS-CoV-2. Median [interquartile range (IQR)] age of patients was 63 [51-75] years. Symptoms began a median of 7 [5-12] days before ICU admission. The most common comorbidities identified were obesity (n = 48%), arterial hypertension (n = 44%) and chronic lung disease (n = 37%). All patients were admitted by hypoxemic respiratory failure and none received non-invasive mechanical ventilation. Forty-five (94%) underwent intubation, 3 HFNT, 1 (2%) extracorporeal membrane oxygenation (ECMO) and 22 (49%) required prone position. After 15 days, 14/45 (31%) intubated patients died (13% within one week), 10 (22%) were extubated, and 21/45 (47%) underwent mechanical ventilation. Six patients had documented co-infection. Procalcitonin plasma above 0.5 µg/L was associated with 16% vs. 19% (p = 0.78) risk of death after 7 days. Conclusion: This early experience with SARS-CoV-2 in Spain suggests that a strategy of right oxygenation avoiding non-invasive mechanical ventilation was life-saving. Seven-day mortality in SARS-CoV-2 requiring intubation was lower than 15%, with 80% of patients still requiring mechanical ventilation. After 15 days of ICU admission, half of patients remained intubated, whereas one third died. Page 4 of 25 J o u r n a l P r e -p r o o f third were non-survivors. Our clinical observations provide useful insights that can help to improve management and outcomes.

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