inclusion criteria: * patients previously diagnosed with covid-19, who required hospitalization and required invasive mechanical ventilation for at least 7 days and who were discharged between august and december 2021 to minimize regression to mean; * both sexes; * over 18 years old and under 65 years old.

inclusion criteria: * patients previously diagnosed with covid-19, who required hospitalization and required invasive mechanical ventilation for at least 7 days and who were discharged between august and december 2021 to minimize regression to mean; * both sexes; * over 18 years old and under 65 years old.

inclusion criteria: patients previously diagnosed with covid-19, who required hospitalization and required invasive mechanical ventilation for at least 7 days and who were discharged between august and december 2021 to minimize regression to mean; both sexes; over 18 years old and under 65 years old.

inclusion criteria: patients previously diagnosed with covid-19, who required hospitalization and required invasive mechanical ventilation for at least 7 days and who were discharged between august and december 2021 to minimize regression to mean; both sexes; over 18 years old and under 65 years old.

inclusion criteria: patients previously diagnosed with covid-19, who required hospitalization and required invasive mechanical ventilation for at least 7 days and who were discharged between august and december 2021 to minimize regression to mean; both sexes; over 18 years of age.

inclusion criteria: patients previously diagnosed with covid-19, who required hospitalization and required invasive mechanical ventilation for at least 7 days and who were discharged between august and december 2021 to minimize regression to mean; both sexes; over 18 years of age.