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Clinical Trial Summary

Central venous catheter placement is a common procedure in the intensive care unit and is a required skill for all residents working in the critical care setting. Central venous catheters (CVC) are placed for a variety of reasons including administration of caustic medications, administration of fluids or blood products for rapid resuscitation, access for hemodynamic monitoring or transvenous pacing, temporary vascular access for dialysis, or inability to obtain peripheral IV access. CVC's are routinely placed in the internal jugular vein in the Vanderbilt medical ICU and ultrasound guidance is used. Placement of the CVC on the right IJ instead of the left IJ is commonly preferred due to the more direct path to the superior vena cava. However, placement in the left IJ may be necessary for a variety of reasons. The investigators intend to compare the standard practice of residents and nurse practitioners placing IJ CVCs in the medical ICU against mandatory screening of the right and left IJ prior to selection of the CVC placement site. The investigators will accomplish this by assessing the relative first pass stick and overall success rates, the rate of aborted procedures, and the rate of complications between standard practice and mandatory screening of bilateral internal jugular veins prior to CVC site selection.


Clinical Trial Description

Central venous catheter placement is a common procedure in the intensive care unit and is a required skill for all residents working in the critical care setting. Central venous catheters (CVC) are placed for a variety of reasons including administration of caustic medications, administration of fluids or blood products for rapid resuscitation, access for hemodynamic monitoring or transvenous pacing, temporary vascular access for dialysis, or inability to obtain peripheral IV access.

The 2011 CDC Guidelines for Prevention of Intravascular Catheter-Related Infections recommends placement of a CVC in the subclavian vein rather than the internal jugular vein to minimize infection risk. However, due to lack of experience with placement in the subclavian vein, in the Vanderbilt MICU, it is most common for residents to place catheters in the internal jugular vein. Placement of the CVC under ultrasound guidance has become standard of care and is also recommended by the aforementioned CDC guidelines (CDC guidelines).

Ultrasound guidance for CVC placement has improved patient safety by reducing the rate of complications, improving success rates, and decreasing number of attempts and time for successful insertion (Brass). The benefit of ultrasound guidance in reducing complications is especially important when less experienced operators such as residents are placing a CVC (Rando, Airapetian, Dodge). The addition of an ultrasound machine to an otherwise sterile procedure does not increase the rate of catheter associated blood stream infections (Cartier).

Placement of the IJ CVC on the right instead of the left is commonly preferred due to the more direct path to the superior vena cava. However, placement in the left IJ may be necessary for a variety of reasons. Depending on head position, the degree of overlap between the right IJ and the right carotid artery may make right sided placement precarious due to risk of arterial puncture (Ozbek, Maecken). Previously undetected IJ thrombus on the right may also prevent CVC placement, requiring a switch to the contralateral side (Goel). Ultrasound guidance could also reveal a unilateral vascular anatomic anomaly that would otherwise complicate CVC insertion (Benter, Rossi).

For these reasons, the investigators intend to compare the standard practice of residents placing IJ CVC in the medical ICU against mandatory screening of the right and left IJ prior to selection of the CVC placement site.

The benefits of ultrasound guidance for IJ CVC placement are well established. However, the benefits of ultrasound guidance may be extended by more fully evaluating both the left and right IJ prior to choosing a side for placement. As mentioned previously, several factors could make placement of the CVC on a particular side either more successful or precarious. These factors include possible asymmetric diameter of the IJ vein, unfavorable relationship of the IJ to the carotid artery, pre-existing IJ thrombus, or other aberrant vascular anatomy.

This study will begin with a 4 month period of data collection on the standard practice of IJ CVC placement by residents in the medical intensive care unit. Data will be collected on the success rate of CVC insertion as measured by "first stick" placement of the catheter. The study will also record how often placement of the CVC must be aborted in favor of an attempt on the contralateral side. Any incidental detection of pre-existing conditions that could complicate CVC placement, including IJ thrombus or aberrant anatomy, will also be recorded. Finally, the investigators will record rates of immediate complication of CVC placement, including pneumothorax, hemothorax, and arterial placement or puncture of the CVC catheter.

In the medical ICU of the institution where this study will occur, nurse practitioners perform similar duties to residents on a separate but similarly operating ICU team. Data on central line placement by nurse practitioners will also be collected.

The specific aims will be threefold:

Specific Aim 1: To assess the first pass and overall success rates when both IJ veins are evaluated by ultrasound compared to standard IJ CVC placement by ultrasound.

Specific Aim 2: To assess the rate of aborted procedures between the two study periods, as defined by failure of catheter placement at the side of first needle puncture site or failure of catheter placement overall.

Specific Aim 3: To assess the rate of complications when IJ central venous catheters are placed after evaluation of bilateral IJ sites compared to current practice of placing IJ catheters under ultrasound guidance. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT02741453
Study type Interventional
Source Vanderbilt University Medical Center
Contact
Status Completed
Phase N/A
Start date September 1, 2016
Completion date May 1, 2017

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