Direct Measurement of Ideal Depth of Central Line

Study Overview
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Brief Summary
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Total of 89 patients undergoing elective cardiac surgery will be enrolled. Right CVC insertion begins at their intersection of the cricoid cartilage level and the triangular point where the sternal head of the SCM muscle meets the clavicular head. After insertion the central venous catheter through the right internal jugular vein and positioning it, the location of the tip of the central venous catheter will be confirmed by TEE.

Detailed Description
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Investigator confirms the location of the 2 cm from the junction between right atrium and superior vena cava to the end of the tip of the catheter using TEE, and measures the insertion depth of the catheter at insertion point. It is possible to find the ideal central venous catheter insertion depth in actual clinical practice in adult patient. The ideal central venous catheter insertion depth can be measured accurately when the end of the central venous catheter is monitored with transesophageal ultrasonography, and it can be derived a meaningful formula for predicting the ideal central venous insertion depth from the patient's height .

Official Title
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Direct Measurement of Ideal Depth of Central Line for Right Internal Jugular Venous Catheterization in Adults

Conditions
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Patient Safety During Central Venous Catheterization

Intervention / Treatment
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* Procedure: central venous catheterization through Rt. IJV


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: adult patient over 18 years of age undergoing cardiac surgery under general anesthesia, requiring central venous catheter insertion through the right internal jugular vein and insertion of a TEE probe Exclusion Criteria: Patients who disagree with the study. Patients who had difficulty in inserting the central line through the right internal jugular vein.

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Supportive Care
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: CVC catheterization through Rt. IJV<br>The depth of central venous catheter during central venous catheterization through Rt. IJV will be decided by using real-time TEE. The position of tip of CVC will be guided by TEE to fit the tip at 2 cm away from the junction between right atrium and superior vena cava. | Procedure: central venous catheterization through Rt. IJV<br>* insertion at the intersection of the cricoid cartilage level and the triangular point where the sternal head of the SCM muscle meets the clavicular head placement of the tip of the catheter 2 cm away from the junction between right atrium and superior vena cava using TEE measurement of the depth of the catheter at insertion point<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| depth of the central venous catheter in right internal jugular vein |  | at time of insertion of the central venous catheter | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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catheterization, central venous, jugular veins, echocardiography, transesophageal