Treatment of malignant airway obstruction with Y-shape sigma stent loaded with I125 seeds installed via rigid bronchoscopy

Table 2 Therapeutic outcomes of Y-shape Sigma stent pre-loaded with ¹²⁵I seeds

	Airway opening (%)	KPS	PaO₂ (mmHg)
Baseline	30.2 ± 10.5	30.0 ± 10.0	50.1 ± 15.4
After the procedure 0 month 1 month 3 months 6 months	70.3 ± 9.4* 79.2 ± 9.4^# 80.4 ± 3.9^# 81.4 ± 6.6*^#	70.0 ± 10.0* 72.5 ± 8.7* 73.6 ± 7.7* 72.6 ± 8.4*	89.3 ± 8.6* 90.2 ± 7.8* 91.4 ± 6.5* 89.9 ± 7.2*

After 1 to 6 months of the procedure, patients had significant improvement in airway opening, respiratory functions, and partial pressure of oxygen in arterial blood. *p < 0.05 compared to those of baseline, # p < 0.05 compared to 0 month

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