Central Venous Catheter Placement Clinical Trial
Official title:
Comparison of Two Syringe-free In-plane Techniques in Ultrasound-guided Central Venous Catheterization: Jugular Venous Catheterization With Oblique Approach and Brachiocephalic Catheterization Using Y-shape Image
Ultrasound guidance has become a standard for central venous catheterization. The aim of this study is to compare jugular venous catheterization by using lateral oblique approach to brachiocephalic catheterization by using Y-shape imaging. The trial is planned as prospective randomized and single-blind study. Eighty patients are planned to include in this study. Patients will be assigned to two groups: Oblique visualization Group (central catheter will be placed to the jugular vein by using ultrasound-guided in-plane syringe-free technique) and Y-shape visualization Group (central catheter will be placed to the brachiocephalic vein by using ultrasound-guided in-plane syringe-free technique). Two groups will be compared in terms of number of puncture attempts, procedural time, time of preprocedural ultrasound scanning, overall success rate, complications, the ease of the catheterization process and ultrasound visibility.
Central venous catheters are frequently placed in the operating rooms, intensive care units
and emergency departments for various indications such as intravenous fluid, drug infusion,
measurement of cardiac parameters and lack of vascular access. Ultrasound guidance has become
a standard for central venous catheterization. The use of ultrasound has reduced the number
of puncture attempts, increased success rate and reduced complications. While the central
venous catheter is inserted by ultrasound, the vessels and the needle can be imaged in
real-time. In plane and out-of-plane imaging techniques can be used during catheterization.
The in-plane technique ensures the entire needle visualization in ultrasound images. With the
linear ultrasound probe, the vessel and needle are imaged longitudinally in the in-plane
technique. When an endocavity (micro-convex) ultrasound probe is used, three central vessels
(jugular, subclavian and brachiocephalic veins) are displayed as Y-shape. The advantage of
the endocavity (micro-convex) probe is that it can visualize deeper tissues and deep veins,
and more tissues can be imaged in wider angle. Both techniques have been successfully applied
in central catheter placement. In-plane technique also ensures syringe-free cannulation where
blood aspiration with a syringe attached to the needle is not necessary.
The aim of this study is to compare two different ultrasound guided in-plane techniques for
central venous catheterization. The investigators planned to compare jugular venous
catheterization using a linear probe and lateral oblique approach to brachiocephalic
catheterization using a micro-convex probe and Y-shape imaging.
The primary outcomes are number of puncture attempts, success rate at first attempt, overall
success rate, procedure time, ultrasound scanning time and rate of complications. Secondary
outcomes are visibility of the veins and the needle in ultrasound images.
The trial is a comparison of two different interventional technique and planned as
prospective randomized and single-blind study. Patients aged between 18-85 years that are
planned central venous catheter placement will be included in the study. Patients included in
the study will be assigned into two groups by computer-assisted randomization. In the first
group (Oblique visualization Group), central catheter will be placed to the jugular vein by
using ultrasound-guided in-plane syringe-free technique. In the second group (Y-shape
visualization Group), central catheter will be placed to the brachiocephalic vein by using
ultrasound-guided in-plane syringe-free technique Linear ultrasound probe will be used in the
first group, and endocavity (micro-convex) ultrasound probe will be used in the second group.
In both groups, the number of puncture attempts, the number of needle redirections, and the
procedure time will be recorded. The time of preprocedural ultrasound scanning will be
recorded in both groups. In addition, complications during the procedure such as bleeding,
hemothorax, pneumothorax, hematoma and carotid vascular injury will be recorded. Overall
success rates will be assessed in each group at the end of the study. A catheterization
procedure will be considered as "unsuccessful" after third puncture attempt or more than 10
needle redirections are needed or requires a procedure time more than 3 minutes. At this
moment, the catheter will be placed to a different region or the investigators will switch to
a different approach. The ease of the catheterization process will be scored between 0 and 10
by the investigator performing the process (0: the hardest, 10: the easiest). The ultrasound
visibility of the needle, vessels, guide wire and catheter will be scored between 0 and 4 (4:
excellent view, 3: good view, 2: Medium, 1: difficult 0: impossible to image). The recorded
data will be compared between the two groups.
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