Utility of Pulse Oximetry Oxygen Saturation (SpO₂) with Incorporation of Positive End-Expiratory Pressure (SpO₂10/FiO₂PEEP) for Classification and Prognostication of Patients with Acute Respiratory Distress Syndrome

Table 1

Depiction of the mean and standard deviation of the demographic and baseline variables in 85 patients.

Variables	N	Mean ± SD
Age in years	85	54 ± 15
Gender	Males = 60 (71%)
Survivors	48 (57%)
APACHE II score	85	18.66 ± 7.02
SOFA score	85	8.24 ± 3.62
Mechanical ventilation days	85	6.17 ± 6.41
Length of ICU stay	85	7.49 ± 6.65
FiO2 (B)	85	0.7 ± 0.21
PEEP (B), cm H2O	85	8.94 ± 2.66
SpO2 (B)	85	94.11 ± 5.36
P/F (B) ratio	85	178.77 ± 63.36
P/FP10 (B) ratio	85	225.94 ± 123.54
S/F (B) ratio	85	148.10 ± 51.82
S/FP10 (B) ratio	85	189.85 ± 109.47
Etiology of ARDS	Sepsis, 25
	Pneumonia, 24
	Acute febrile illness, 23
	Pancreatitis, 7
	Others (poisoning, snake bite), 6

APACHE: acute physiology and chronic health evaluation; SOFA: Sequential Organ Failure Assessment; FiO₂ (B): fraction of inspired oxygen at baseline; PEEP (B): positive end-expiratory pressure at baseline; PaO₂: partial pressure oxygen in arterial blood; SpO₂ (B): pulse oximetry oxygen saturation at baseline; P/F (B) ratio: PaO₂/FiO₂, partial pressure of arterial oxygen to inspiratory oxygen fraction ratio; P/FP10 (B): PaO₂10/FiO₂PEEP at baseline; S/FP10 (B) ratio: SpO₂10/FiO₂PEEP; ARDS: acute respiratory distress syndrome.