Impact Factors to Success Without Posterior Wall Puncture Using Dynamic Approach

Study Overview
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Brief Summary
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The study is designed to evaluate and validate impact factors to success and complication using ultrasound guided short-axis out-of-plane dynamic approach, and validate the impaction.

Detailed Description
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The study including two phase: observational phase and validation phase. In observational phase, factors relative to success catheterization without posterior puncture and success in first attempt are evaluated. In validation phase, patients are randomized into different depth group with or without injection of saline. Success without posterior wall puncture, success in first attempt and overall, catheterization time are compared between groups.

Official Title
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Impact Factors to Success Without Posterior Wall Puncture Using Ultrasound-guided Short-axis Out-of-plane Dynamic Approach

Conditions
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Radial Artery Catheterization, Ultrasound or Ultrasonography, Ultrasound-guided Short-axis Out-of-plane Dynamic Approach

Intervention / Treatment
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* Procedure: improvement of arterial depth


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: requirement of radial arterial catheterization during perioperative period within cardiac-vascular disease written consent Exclusion Criteria: contraindication to radial arterial catheterization abnormal artery evaluated by ultrasonography

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
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Triple


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| No Intervention: shallow depth<br>Radial arterial deth is shallow than the cutoff point that relative to results. | |
| Experimental: improved depth<br>Radial arterial deth is shallow than the cutoff point that relative to results, and increased by injection of saline to more than deep cutoff point. | Procedure: improvement of arterial depth<br>* deepen radial arterial depth by injection of saline to more than deep cutoff point relative to result.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| success without posterior wall puncture | success to puncture and catheterize of radial artery, without posterior wall puncture. | Through study completion,an average of 5 minutes | 
| success in first attempt | success puncture and catheterization in first attempt | Through study completion,an average of 5 minutes | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| success overall | success catheterization with the maximum of 10 minutes | Through study completion,an average of 5 minutes | 
| time needed to catheterization | time required for successful puncturing and catheterization with the maximum of 10 minutes | Through study completion,an average of 5 minutes |