Table 2 Ventilatory parameters
Supine position median [IQR] | Prone position median [IQR] | p-value | |||
|---|---|---|---|---|---|
Heart rate, bpm | 82 [62–102] | 75 [58–92] | < 0,1 | ||
MAP, mmHg | 83 [63–103] | 80 [69–91] | 0,91 | ||
FiO2, % | 86 [72–100] | 57 [39–75] | < 0,01 | ||
PaO2, mmHg | 85 [54–116] | 96 [69–123] | < 0,01 | ||
PaCO2, mmHg | 43 [33–53] | 44 [37–51] | 0,076 | ||
PaO2/FiO2 ratio | 101 [59–143] | 186 [180–266] | < 0,001 | ||
SaO2, % | 93 [88–98] | 95 [93–97] | < 0,001 | ||
Tidal Volume, mL | 399 [341–457] | 395 [336–454] | 0,46 | ||
Respiratory rate, /min | 25 [21–29] | 25 [22–28] | 0,052 | ||
PEEP, cmH2O | 9 [7–11] | 10 [8–12] | 0,54 | ||
PaCO2-EtCO2 | 13 [4–22] | 14 [8–20] | 0,34 | ||
Dead-Space Fraction | |||||
Enghoff | 0,29 [0,14 − 0,44] | 0,31 [0,19 − 0,43] | 0,37 | ||
Frankenfield | 0,501 [0,475-0,527] | 0,505 [0,478-0,32] | 0,43 | ||
Gattinoni | 0,70 [0,54 − 0,86] | 0,68 [0,56 − 0,8] | 0,32 |