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. 2014 Dec 14;2014:470295. doi: 10.1155/2014/470295

Table 5.

The relation among the mean PAOI values and patient symptoms and presence of hypoxemia in arterial blood gas analysis.

PAOI
(mean ± standard deviation)
P value
Dyspnea
 Absent (n = 9) 23.88 ± 16.58 0.206
 Present (n = 171) 31.83 ± 18.44
Chest pain
 Absent (n = 35) 29.42 ± 17.08 0.469
 Present (n = 165) 31.94 ± 18.71
Hemoptysis
 Absent (n = 141) 31.47 ± 18.65 0.982
 Present (n = 39) 31.39 ± 17.64
Syncope
 Absent (n = 165) 30.55 ± 18.55 0.029
 Present (n = 15) 41.33 ± 13.32
PaO2 < 60 mmHg)
 Absent (n = 110) 28.04 ± 18.26 0.002
 Present (n = 70) 36.81 ± 17.41

PAOI: pulmonary arterial obstruction index, PaO2: partial oxygen pressure.