A Difference in the Cross-section Area of Subclavian Vein Between Supine and Lateral Tilt Position: Its Clinical Impact on Subclavian Venous Catheterization - Stage II
| Registry | NCT03296735 |
|---|---|
| Status | Unknown |
| Phase | Not applicable |
| Study type | Interventional; randomized, crossover, masking: none, diagnostic |
| Enrollment | 17 (Estimated) |
| Sponsor | Seoul National University Hospital (Other) |
| Conditions | Catheterization, Posture |
| Interventions | Ipsilateral tilt, Contralateral tilt (Procedure) |
| Dates | start 2017-10-15 (estimated), primary completion 2019-07-31 (estimated), completion 2019-07-31 (estimated), first posted 2017-09-28, last updated 2017-10-11 |
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Central venous catheterization is widely used for various purposes during surgery. For central venous catheterization, subclavian vein is selected because of the relatively low risk of infection, long-term patency and low patient discomfort. The cross - sectional area of the subclavian vein is an important factor to increase success rate. Several studies have reported that the Trendelenburg position increases the cross-sectional area of the subclavian vein, and the lateral tilt position can change the cross-sectional area of the subclavian vein. However, the impact of lateral tilt position to the cross-sectional area of the subclavian vein is not clear. The ipsilateral position can increase the cross-sectional area of the subclavian vein, and the contralateral position can decrease the cross-sectional area by gravity.
In the first stage of this study, we compare the cross-sectional area of subclavian vein using ultrasonography in supine, ipsilateral, and contralateral tilt position.
| Arm | Type | Interventions | Description |
|---|---|---|---|
| Ipsilateral tilt | Experimental | Procedure: Ipsilateral tilt | Measuring the cross-sectional area of right subclavian vein in the 20 degree left tilting posture. |
| Supine | No intervention | Measuring the cross-sectional area of right subclavian vein in supine position. | |
| Contralateral tilt | Active comparator | Procedure: Contralateral tilt | Measuring the cross-sectional area of right subclavian vein in the 20 degree left tilting posture. |
Sex: All, ages: 20 Years to 79 Years
Inclusion Criteria: \- the patients who receive elective neurosurgical surgery and require central venous catheter Exclusion Criteria: * the patients who have puncture site infection * the patients who have chemoport, pacemaker in right subclavian vein * the patients who had received right mastectomy or right pneumonectomy * other contraindications for subclavian venous catheterization (eg. mass, hematoma, vegetation, and anticoagulation)