Table1 Comparison of the novel observed categorical parameters (CD location in %, its steep course in %, presence of an air leak in %) and continuous parameters (depth of CD insertion in cm, length of CD in chest in cm, CDI, all * medians and interquartile ranges) between groups with a full lung expansion on CUS (pneumothorax excluded in all lung fields) and group with a residual pneumothorax on CUS
Pneumothorax n = 106 | Full lung expansion on post-drainage CUS (n = 80, 75%) | Residual pneumothorax on post-drainage CUS (n = 26, 25%) |
|---|---|---|
Drain located on CUS | 69 (86%) | 8 (31%), (p˂0.0001) |
Depth of drain insertion on CD scale (cm)* | 12 (10–14) | 12 (12–16), (n.s) |
Length of CD in chest on antero-posterior CR (cm)* | 16.1 (14.2–17.9) | 13.3 (11.4–16.5), (n.s.) |
CDI* | 0.99 (0.88–1.06) | 0.76 (0.6–0.93), (p˂0.01) |
Steep ascending drain in chest on CR | 10 (12.5%) | 6 (23%), (n.s.) |
Continued air leak from the drain | 19/80 (24%) | 14/26 (55%), (p˂0.003) |