I have clarified some points in response to the letter from Fiorentino et al. The types of ventilation were not considered in the same group but were classified into mask with reservoir, HNFC, NIV, and nasal cannula as shown in Table 1. (Baseline demographic and clinical characteristics of the analyzable population. Comparison between failure groups—those who needed intubation within 48 h after the prone maneuver—and the successful group showed no statistically significant difference.)
Patients were excluded if they were pregnant, were …
