The Association between the Pulmonary Arterial Obstruction Index and Atrial Size in Patients with Acute Pulmonary Embolism
Table 3
ROC curve analysis of PAOI and different RA and LA measurements.
90%
Sensitivity
AUC
95%
CI
P Value
Cut-off
Specificity
LA Long Diameter, cm
0.634
0.512 -
0.756
0.035
5.32
75.0
LA Short Diameter, cm
0.665
0.548 -
0.782
0.009
2.83
77.8
LA Height, cm
0.426
0.303 -
0.548
0.241
3.95
94.4
LA Area, cm2
0.675
0.554 -
0.796
0.006
13.06
69.4
LA Volume, cm3
0.609
0.487 -
0.731
0.086
33.09
80.6
RA Long Diameter, cm
0.693
0.577 -
0.809
0.002
4.07
55.6
RA Short Diameter, cm
0.624
0.502 -
0.747
0.050
4.14
83.3
RA Height, cm
0.550
0.428 -
0.672
0.431
5.75
88.9
RA Area, cm2
0.724
0.609 -
0.839
<0.001
15.61
58.3
RA Volume, cm3
0.709
0.594 -
0.824
0.001
62.83
58.3
RA to LA Long Diameter Ratio
0.610
0.489 -
0.731
0.083
0.60
83.3
RA to LA Short Diameter Ratio
0.432
0.309 -
0.554
0.282
0.98
94.4
RA to LA Height Ratio
0.572
0.451 -
0.693
0.259
1.08
88.9
RA to LA Area Ratio
0.553
0.430 -
0.676
0.406
0.69
88.9
RA to LA Volume Ratio
0.548
0.426 -
00.670
0.446
0.78
100
Abbreviations: AUC: area under the curve; CI: confidence interval; cm: centimeter; LA: left atrium; PAOI: pulmonary artery obstruction index; RA: right atrium.
