18F-FDG PET/CT predicts acute exacerbation in idiopathic pulmonary fibrosis after thoracic surgery

BMC Pulmonary Medicine

Table 1 Comparison of baseline characteristics between IPF patients with and without postoperative complications

Characteristics	Total	Complications	No-complications	P value
Patient No	48	21	27
Age, year	67.8 ± 7.1	70.5 ± 6.2	65.7 ± 7.1	0.019
Male	44 (91.7)	21 (100.0)	23 (85.2)	0.121
Ever-smokers	45 (93.7)	21 (100.0)	24 (88.9)	0.246
FVC, % predicted	82.0 ± 12.7	82.8 ± 13.8	81.5 ± 12.0	0.732
DLco, % predicted	64.6 ± 18.0	65.2 ± 16.5	64.1 ± 19.4	0.838
TLC, % predicted	79.1 ± 10.5	79.7 ± 11.8	78.6 ± 9.6	0.719
6MWD, meter	457.4 ± 100.1	471.6 ± 104.0	446.0 ± 97.4	0.400
6MWT, resting SpO₂, %	96.6 ± 1.3	96.3 ± 1.5	96.9 ± 1.1	0.139
6MWT, lowest SpO₂, %	91.3 ± 5.0	90.4 ± 4.8	92.0 ± 5.2	0.307
GAP index	3.1 ± 1.2	3.3 ± 1.1	2.9 ± 1.3	0.308
CCI	4.8 ± 1.5	5.2 ± 1.3	4.5 ± 1.5	0.095
SUV parameters
SUV_max	2.1 ± 0.6	2.2 ± 0.6	1.9 ± 0.6	0.128
SUV_mean	1.7 ± 0.4	1.8 ± 0.5	1.6 ± 0.4	0.137
SUVR	0.9 ± 0.3	1.0 ± 0.3	0.9 ± 0.2	0.227
SUV_meanTF	2.5 ± 0.7	2.7 ± 0.7	2.4 ± 0.6	0.059
SUVR_TF	1.3 ± 0.4	1.5 ± 0.5	1.3 ± 0.3	0.096

Data are presented as either mean ± standard deviation or number (percentage), unless otherwise indicated
IPF, idiopathic pulmonary fibrosis; FVC, forced vital capacity; DLco, diffusing capacity of the lung for carbon monoxide; TLC, total lung capacity; 6MWD, six-minute walk distance; 6MWT, six-minute walk test; SpO₂, saturation of oxygen; GAP: gender, age, and physiology; CCI, Charlson comorbidity index; SUV, standardized uptake value; SUV_max, maximum standardized uptake value; SUV_mean, mean standardized uptake value; SUVR, standardized uptake value ratio; SUV_meanTF, tissue fraction-corrected mean standardized uptake; SUVR_TF, tissue fraction-corrected standardized uptake value ratio

ISSN: 1471-2466