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The study is prospectively conducted on 190 patients aged between 20 and 85 years, American Society of Anesthesiologists (ASA) physical status I - III, undergoing one-lung ventilation for thoracic surgery. Patients were randomly allocated into either control group (n = 95) or experimental group (n = 95) by a computerized randomization table. The size of endobronchial tube is decided based on the diameter of left main bronchus measured on the CT finding of patients. After induction of general anesthesia, in patients assigned to control group, endobronchial intubation is performed using conventional technique with left-sided double-lumen endobronchial tube (Shiley®, Covidien, Mansfield, MA, USA). In experimental group, patients are intubated with novel double-lumen endobronchial tube (Ankor®,Insung Medical, Wonjou, S. Korea). During intubation, the carina cuff of Ankor® is inflated after the tube is rotated 90º toward the left. The tube is advanced until slight resistance is felt, then the carina cuff is deflated. In both groups, fiberoptic bronchoscope is performed to evaluate the position of endobronchial tube after intubation. If endobronchial tube is not in optimal position, the depth of tube is corrected to optimal position under guidance of fiberoptic bronchoscope. Airway injury is confirmed using fiberoptic bronchoscope before extubation. The success of endobronchial intubation, position of endobronchial tube, the corrected depth of endobronchial tube, time consumption for endobronchial intubation and complication of intubation such as airway injury, pain, and hoarseness are compared between two groups.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Control | Active Comparator | Endobronchial intubation using conventional technique with left-sided double-lumen endotracheal tube (Shiley®, Covidien, Mansfield, MA, USA) |
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| Experimental | Experimental | Endobronchial intubation using novel left-sided double-lumen endobronchial tube (Ankor®,Insung Medical, Wonjou, S. Korea) |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Endobronchial intubation | Device |
|
| Measure | Description | Time Frame |
|---|---|---|
| Optimal position of double-lumen endobronchial tube | On fiberoptic bronchoscopic view after intubation, optimal position of double-lumen endobronchial tube is defined when the bronchial cuff of the tube is immediately below the tracheal carina and there is a clear view of the left subcarina with unobstructed left upper and lower bronchi. | 1 day (after intubation) |
| Measure | Description | Time Frame |
|---|---|---|
| The corrected depth of endobronchial tube | The corrected depth of endobronchial tube is defined as the difference between the depth of endobronchial tube before and after the depth of tube is corrected to optimal position under guidance of fiberoptic. | 1 day (after intubation) |
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Inclusion Criteria:
Exclusion Criteria:
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Department of Anesthesiology and Pain Medicine, Severance | Seoul | 03722 | South Korea |
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Patients were randomly allocated into either control group (n = 95) or experimental group (n = 95) by a computerized randomization table. In control group, endobronchial intubation is performed using conventional technique with left-sided double-lumen endotracheal tube (Shiley®, Covidien, Mansfield, MA, USA). In experimental group, patients are intubated with novel double-lumen endotracheal tube (Ankor®,Insung Medical, Wonjou, S. Korea).
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Patients, investigators who evaluate complication of intubation are blinded to the study group.
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