From: Prevalence of airway patency and air pocket in critically buried avalanche victims - a scoping review
Obstructed
Patent
Unknown
Burial time
Short < 35 min (n = 8, 38%)
2 (25%)
6 (75%)
0
Long ≥ 35 min (n = 13, 62%)
2 (15%)
11 (85%)
Total (n = 21)
4 (19%)
17 (81%)