COVID-19 patient(2) retrospective(2) COVID-19(2) reported(2) intubation(1) airway management(1) Impact(1) preparation(1) videolaryngoscopy(1) anesthesiologists(1) tracheal(1) greater(1) expected(1) Respiratory failure(1) coronavirus disease(1) Critically ill(1) experience(1) intubations(1) general anesthesia(1) majority(1) decrease(1) tracheal tube(1) conducted(1) pandemic(1) oxygen(1) performance(1) Japan(1) tracheal intubation(1) Anesthesia(1) was performed(1)