Chest CT for the Placement of the Uniblocker

Placement of the Uniblocker Under the Guidence of Chest Computerized Tomography

Video laryngoscope and chest CT iminge for the placement of the Uniblocker

Comparing the traditional method of Uniblocker intubation and video laryngoscope combined with chest CT iminge guide the precise localization of Uniblocker

Inclusion Criteria:

BMI less than 35 kg/m2 ASA classifications of I-III, Modified Mallampati classification 1 or 2 Under general anesthesia

Exclusion Criteria:

• Age younger than 18 yr or older than 65 yr
• ASA class IV or V
• Abnormalities of the heart, brain, liver, lung, kidney and coagulation functions