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One-lung ventilation (OLV) is required for the most of thoracic surgery to facilitate surgical visualization by collapsing the lung. The double-lumen tube (DLT) is the commonly used device for OLV. The objective of this study was to compare the accuracy of the distances between vocal cords to carina of trachea and formula base on patient's height as a guide for the intubation of a Left-sided Double-lumen tube
In previous study, investigators found that the distances between vocal cords to carina of trachea was a useful predictive method for the intubation of a Left-sided Double-lumen tube. However in some hospitals preoperative chest CT scans not contain the vocal cords slice. So in this study investigators will compare the accuracy of the distances between the midpoint of the thyroid cartilage to suprasternal notch base on body surface measurement add the distance between suprasternal notch to carina of trachea according to chest CT and formula base on patient's height as a guide for the intubation of a Left-sided Double-lumen tube.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Measurement | The distances between the midpoint of the thyroid cartilage to suprasternal notch base on body surface measurement add the distance between suprasternal notch to carina of trachea according to chest CT. |
| |
| Formula | The formula base on patient's height as a guide for the intubation of a Left-sided Double-lumen tube. The depth of intubation = 0.1977* height-4.2423 |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Measurement | Other | The distances between the midpoint of the thyroid cartilage to suprasternal notch base on body surface measurement add the distance between suprasternal notch to carina of trachea according to chest CT |
| Measure | Description | Time Frame |
|---|---|---|
| The incidence of the injuries of bronchi and carina | The degree of bronchi and carina injuries: 1 clear; 2 a few petechiae; 3coalesced petechiae, hemorrhage, or ecchymosis; 4 erosion | 1-3days |
| Measure | Description | Time Frame |
|---|---|---|
| The incidence of dislodgement | The incidence of dislodgement after repositioning | 1 day |
| The intubation time | The intubation time (IT) was defined as the time from the anesthesiologist inserted the video laryngoscope between the teeth of patients until the double lumen-tube at the optimal position checked by Fiberoptic bronchoscopy |
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Inclusion Criteria:
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| 中国 | Qinhuangdao | Hebei | 066000 | China |
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| ID | Term |
|---|---|
| D014894 | Weights and Measures |
| D005526 | Food, Formulated |
| ID | Term |
|---|---|
| D008919 | Investigative Techniques |
| D019648 | Foods, Specialized |
| D005502 | Food |
| D000066888 | Diet, Food, and Nutrition |
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| Formula | Other | The formula base on patient's height as a guide for the intubation of a Left-sided Double-lumen tube |
|
| 1-5min |
| D010829 |
| Physiological Phenomena |
| D019602 | Food and Beverages |