The Method to Reduce Displacement of Double-lumen Tube

The Method to Reduce Displacement of Double-lumen Tube During Patient Positioning

The purpose of this study is to devise the method to reduce displacement of a left-sided double-lumen tube during patient positioning.

Inclusion Criteria:

• patients undergoing thoracic surgery that require the placement of left-sided double-lumen tubes

Exclusion Criteria:

• intraluminal lesion of left bronchus
• very distorted anatomy of tracheobronchial tree