Table 5. The safety and feasibility of UniVATS for lung cancer.

Question	N (%)
Under which situations would you add another port?
Extensive pleural adhesions	26 (65.0)
Calcified lymph nodes	28 (70.0)
Absence of fissure	3 (7.5)
Poor lung deflation	12 (30.0)
Involvement of nerves or pericardium	15 (37.5)
Poor assistant cooperation	20 (50.0)
Other technical difficulties	28 (70.0)
Massive hemorrhage	38 (95.0)
None of above	0
Under which situations would you convert to open?
Extensive pleural adhesions	10 (25.0)
Calcified lymph nodes	24 (60.0)
Absence of fissure	1 (2.5)
Poor lung deflation	5 (12.5)
Involvement of nerves or pericardium	13 (32.5)
Poor assistant cooperation	8 (20.0)
Other technical difficulties	21 (52.5)
Massive hemorrhage	37 (92.5)
None of above	0
Under which situations would you try to deal with by UniVATS?
Pulmonary vascular trunk bleeding	22 (55.0)
Pulmonary vascular branch bleeding	39 (97.5)
Tracheobronchial injury	37 (92.5)
Only surgeons with rich experience can try to deal with massive hemorrhage by UniVATS
Agree	38 (95.0)
Neither agree nor disagree	2 (5.0)
Disagree	0
No differences between UniVATS and multi-portal VATS in terms of mortality, incidence of intraoperative adverse events
Agree	37 (92.5)
Neither agree nor disagree	3 (7.5)
Disagree	0

UniVATS, uniportal video-assisted thoracoscopic surgery.