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. Author manuscript; available in PMC: 2020 Jan 1.
Published in final edited form as: Hepatology. 2018 Dec 18;69(1):270–281. doi: 10.1002/hep.30139

Table 3.

Pulse Oximetry and Arterial Blood Gas Measurements of Patients with HPS, All Comers and No Lung Disease (LD)

HPS
(N=75)		 All Comers
(N=288)
P Value 		No LD
(N-127)		 P Value
Pulse Oximetry, Median (IQR)
 Supine % 97 (96, 99) 98 (96, 99) 0.02 98 (97, 99) <0.001
 Sitting % 97 (95, 99) 98 (96, 99) 0.02 98 (97, 99) <0.001
Arterial Blood Gas, Median (IQR)
 pH 7.5 (7.4, 7.5) 7.4 (7.4, 7.5) 0.06 7.4 (7.4, 7.5) 0.01
 PaO2 , mmHg 80.2 (72.4, 87.5) 89.2 (81.4, 97.4) <0.001 93.0 (85.0, 99.0) <0.001
 PaCO2 , mmHg 33.2 (30.0, 36.0) 35.0 (32.0, 39.0) <0.001 35.0 (32.1, 39.0) 0.002
 A-a gradient, mmHg 25.8 (20.5, 40.0) 15.7 (9.3, 23.9) <0.001 12.4 (7.3, 18.0) <0.001

IQR – Interquartile Range; PaO2 - Partial Pressure of Oxygen in Arterial Blood; PaCO2 - Partial Pressure of Carbon Dioxide in Arterial Blood; A-a gradient - Alveolar-Arterial Gradient