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Table 2 Clinical variables at the beginning of each period

From: Closed-loop oxygen control improves oxygen therapy in acute hypoxemic respiratory failure patients under high flow nasal oxygen: a randomized cross-over study (the HILOOP study)

Variables

Closed-loop oxygen control

Manual oxygen titration

Heart rate (bpm)

71 (60 to 83)

75 (61 to 83)

Mean blood pressure (mmHg)

86.7 (81.3 to 93.3)

89 (82.7 to 95.3)

Respiratory rate (breaths/min)

19 (18 to 24)

20 (18 to 22)

SpO2 (%)

96 (94 to 97)

96 (95 to 97)

FiO2

0.50 (0.40 to 0.60)

0.45 (0.40 to 0.60)

ROX

10.26 (3.22)

10.25 (2.87)

Comfort (VAS)

8 (7 to 9)

8 (7 to 9)

  1. Variables are presented as median (IQR) or mean (SD)
  2. IQR: interquartile range; SD: standard deviation. SpO2: pulse oximetry; FIO2: fraction of inspired oxygen; ROX: respiratory rate and oxygenation index ([SpO2/FIO2]/RR); VAS: visual analogue scale