Fig.4 The relationship between prone position and its frequency with hospital survival rate. (A) 10-day survival analysis; (B) 20-day survival analysis; (C) 30-day survival analysis; (D) The hospital survival rate of patients with different prone position frequencies; (E) SOFA of patients with different prone position frequencies.
Comparison of oxygenation index, SOFA score and CRP between PP group and non-PP group ofhospital survivors
The hospital survivors of PP group(n=63) exhibited a higher BMI [25.0 (22.5, 27.5) vs . 22.2 (20.2, 24.9), p=0.003] and a greater prevalence of malignancies (27.0% vs . 9.8%, p=0.038) compared to the non-PP group (n=51). Furthermore, the PP group demonstrated a higher incidence of bacterial (92.1% vs . 66.7%, p=0.001) and mycotic (71.4% vs . 49.0%, p=0.024)infection during ICU. Additionally, they had a lower oxygenation index [127.0 (101.5, 164.5) vs 228.0 (138.0, 314.0), p<0.001] (See table S1).
The oxygenation index after PP treatment is higher than before [168.0 (135.5,195.5) vs 111.0 (93.0,132.0)],while SOFA score, CRP decreased [8.0 (6.0,9.0) vs 9.0 (7.0,10.0)]; [ 59.7 (24.9, 121.0) vs 90.6 (52.1,137.0)] (Fig 5).