Table 2: Comparison of percent hypoxia time and systolic pulmonary artery pressure in patients with different degrees of resting PaO2.

PaO2
55-55.9 mmHg
(n = 6)
60-69.9 mmHg
(n = 6)
≥ 70 mmHg
(n = 15)
p
T90a 59.9±29 49.3±34 17.1±25 < 0.01
T88b 44.1±34 29.9±31 8.8±18 0.02
SPAP (mmHg) 47±31 36±20 35±10 0.38

a % time with SpO2 < 90% in 24 h.
b % time with SpO2 < 88% in 24 h.