Table 1. Demographic, clinical, and surgical characteristics of the patients.

Case	Age	Gender	Time from removal of TT to admission (m)	Diameter of stenosis	ECMO type	Vascular access	Duration of ECMO (h)	Surgery	Time of surgery (h)	ICU stay (d)	Hospital stay (d)
1	17	M	9	4 mm	VA	Femoral vein–Femoral artery	53	Tracheoplasty + semi-tracheostomy	4	3	21
2	27	M	1	5 mm	VV	Jugular vein–Femoral vein	16	TRE	3	2	13
3	21	F	2	6 mm	VV	Jugular vein–Femoral vein	48	TRE	3	3	13
4	48	M	1	5 mm	VV	Jugular vein–Femoral vein	24	TRE	2	3	7

ECMO: extracorporeal membrane oxygenation; TRE: tracheal resection and end-to-end anastomosis; TT: tracheotomy tube; VA: venoarterial; VV: venovenous