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Table 4 Comparison of lung collapse assessment grades

From: Efficacy and safety of Cohen Flex-Tip blocker and left double lumen tube in lung isolation for thoracic surgery: a randomized comparative study

Lung collapse grade Left DLT Cohen blocker Chi-square test
No. % No. % p value
Grade I (spontaneous) 14 70 12 60 0.803
Grade II (assisted with suction) 3 15 4 20
Grade III (manual disconnection) 3 15 4 20
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