Table 4 Statistical Analysis of Variables Correlated with the Occurrence of complications

Age (years)

0.958–1.040

0.928

–

–

–

Sex (female)

0.359–2.481

0.906

–

–

–

Bilateral

0.475–3.035

0.699

–

–

–

First session

0.523–2.572

0.715

–

–

–

WHO functional class (III-IV versus I-II)

1.540–10.290

0.004

3.268

1.216–8.781

0.019

Period of BPA procedure (recent versus initial period#)

0.240–1.567

0.307

–

–

–

Mean PAP (mmHg)

1.004–1.090

0.030

–

–

–

PVR (Wood Unit)

1.029–1.195

0.007

1.085

1.004–1.172

0.040

Cardiac index (L/min/m²)

0.291–1.014

0.055

–

–

–

Vessels treated/session

0.977–1.297

0.102

–

–

–

Lobes treated/session

1.019–2.427

0.041

–

–

–

Lesions treated/session

0.910–1.155

0.677

–

–

–

Complex lesions treated/session

0.469–1.141

0.168

–

–

–

Largest balloon size used/session (mm)

0.428–1.001

0.050

–

–

–

NT-proBNP (pg/ml)

1.000052–1.000440

0.013

–

–

–

The amount of contrast media given (ml)

0.993–1.007

0.949

–

–

–

Dose area product (μGy m2)

0.999736–1.000102

0.385

–

–

–

Operation duration

0.998–1.013

0.144

–

–

–