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Optimal Head Rotation and External Landmark for Internal Jugular Vein Cannulation After Placement of Proseal Laryngeal Mask Airway

NCT01407302 · Status: COMPLETED · Type: OBSERVATIONAL · Enrollment: 100

Last updated 2013-12-25

No results posted yet for this study

Summary

Recently, laryngeal mask airway (LMA) placements are frequently performed for general anesthesia. The investigators occasionally encounter a clinical situation to perform internal jugular vein (IJV) cannulation after LMA insertion, especially for difficult airway in subjects undergoing major surgery. However, anatomic relations of IJV and common carotid artery (CCA) in patient with LMA placement have been reported to be different from those in patients with endotracheal tube. The degree of overlapping of the right IJV and CCA after LMA placement was greater than before LMA placement. Furthermore, there are many cases of complete overlapping right IJV and CCA after LMA placement. Therefore, the risk of puncturing CCA increases when the investigators try to cannulate IJV after LMA placement. Furthermore, the central landmark commonly used for IJV cannulation was proved to show low success rate after LMA placement in previous report.

The investigators carefully examined the anatomic relations of IJV and CCA after LMA insertion with ultrasonography, and found that the degree of overlapping is different according to the degree of head rotation. The investigators postulated that if the degree of overlapping is different according to the degree of head rotation after LMA insertion, the investigators can find the angle of head rotation for least overlapping and reduce the risk of CCA puncture. Therefore, the investigators tried (1) to find the optimal head rotation angle appropriate for puncturing IJV after LMA placement, and (2) to find suitable landmark adequate for IJV cannulation after LMA placement.

Conditions

  • General Anesthesia With Laryngeal Mask Airway (LMA)

Interventions

OTHER

Head rotation

Repeated ultrasonographic examination according to the degree of head rotation (examination of overlap index of internal jugular vein and common carotid artery, and accuracy of external landmark of jugular cannulation)

Sponsors & Collaborators

  • Samsung Medical Center

    lead OTHER

Principal Investigators

  • Mi Sook Gwak, M.D.,Ph.D. · Samsung Medical Center

Eligibility

Min Age
20 Years
Max Age
70 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2011-07-31
Primary Completion
2012-12-31
Completion
2012-12-31

Countries

  • South Korea

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT01407302 on ClinicalTrials.gov