Table 1.

Clinical Data of SPV Ligation Procedure and Postoperative Outcomes

Variable	Median (range) or No. (%)
Duration of SPV ligation procedure, min	8.8 (4.6-27.0)
Surgical incision, mm	5.0 (3.0-20.0)
Length of SPV stump, mm
All	5.0 (0-26.4)
Thoracoscopic approach	2.5 (0-25.0)
Open thoracotomy approach	3.3 (0-14.9)
Robot-assisted approach	17.1 (0-26.4)
Preoperative serum D-dimer level, μg/mL	0.6 (IQR, 0.5-1.1)
Postoperative serum D-dimer level, μg/mL	2.3 (IQR, 1.3-5.3)
Postoperative infarction	0 (0)
Intra-atrium thrombus in early phase (POD 1, 8 patients; POD 2, 8 patients; POD 3, 5 patients)	0 (0)
Intra-atrium thrombus in late phase	0 (0)

IQR, interquartile range; POD, postoperative day; SPV, superior pulmonary vein.