Ultrasonography For Radial Artery Diameter Measurement And Its Correlation With Allen Test

Study Overview
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Brief Summary
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In this study, the investigators will investigate how patients' radial artery diameters change according to sex, age, height, weight and body mass index by measuring radial artery diameter using ultrasonography. The correlation of Allen test with doppler ultrasonography will also be evaluated.

Detailed Description
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Arterial catheterization for continuous hemodynamic monitoring or frequent blood sampling is a common procedure in anesthesia and critical care setting. The most commonly used site for arterial catheterization is the radial artery because of its superficial course, alternate blood supply to hand via ulnar artery and a low rate of complications. Allen test is a simple, but not reliable, method for assessing the safety of radial artery catheterization. Intraarterial catheterization has some complications such as hematoma, vasospasm, arterial thrombosis, necrosis of skin overlying. Using larger size cannula from radial artery diameter, increase rate of complications. The purpose of this study is to investigate the corelation of radial artery diameter with sex, age, height, weight and body mass index for determination of proper cannula size and investigation of correlation between Allen test and doppler ultrasonography.

Official Title
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Radial Artery Diameter Measurement By Ultrasonography For Determination Of Proper Cannula Size And Investigation Of Correlation Between Allen Test And Doppler Ultrasonography

Conditions
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Anesthesia, Ultrasonography, Radial Artery, Catheterization

Intervention / Treatment
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* Other: Allen test
* Other: Radial artery diameter measurement by ultrasonography
* Other: Ulnar artery doppler ultrasonography


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: patients will be operated under general anesthesia patients were American Society of Anesthesiology (ASA) physical status I or II Exclusion Criteria: ASA III, IV, V History of coroner artery disease History of peripheral artery disease, History of diabetes mellitus, History of hypertension Hemodynamic instability Hypovolemia History of Reynaud phenomenon History of hand or arm trauma previous catheterization

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 60 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: Diagnostic
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Other: All patients<br> | Other: Allen test<br>* Before induction, with firm occlusive pressure held on both the radial and ulnar arteries, the patient is asked to clench his or her fist several times until the palmar skin is blanched. The patient is then instructed to unclench the fist, and then ulnar artery pressure is released while maintaining occlusion of the radial artery. Overextension of the hand and wide spreading of the fingers should be avoided because it can lead to falsely abnormal results. The time required for palmar capillary refill is noted. An abnormal Allen test result was defined as a recovery time of more than 10 seconds.<br>Other: Radial artery diameter measurement by ultrasonography<br>* Ultrasonography measurements will be performed with a linear probe before and after induction. The non-dominant hand of the patient will be fixed in the anatomical position on the arm chair. The wrist joint of patient will be extended to 30 degrees with a wrist pad. The USG probe will be transversally placed 2 cm proximal to the styloid process and the short axes of the radial artery will be scanned. The diameter of the radial artery will be measured and recorded.<br>Other: Ulnar artery doppler ultrasonography<br>* Ultrasonography measurements will be performed with a linear probe before and after induction. The non-dominant hand of the patient will be fixed in the anatomical position on the arm chair. The wrist joint of patient will be extended to 30 degrees with a wrist pad. The USG probe will be transversally placed 2 cm proximal to the styloid process and the short axes of the ulnar arter will be scanned. The blood fow of ulnar artery will be measured and recorded.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| change of the radial artery diameter according to sex, age, height, weight and body mass index | Ultrasonography measurements will be performed with a linear probe. The non-dominant hand of the patient will be fixed in the anatomical position on the arm chair. The wrist joint of patient will be extended to 30 degree with a wrist pad. The Ultrasonography probe will be transversally placed 2 cm proximal to the styloid process and the short axes of the radial artery will be scanned. The diameter of the radial artery will be measured and recorded. | 5 minutes prior to anesthesia induction | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| correlation between Allen test and doppler ultrasonography. | Before induction, with firm occlusive pressure held on both the radial and ulnar arteries, the patient is asked to clench his or her fist several seconds until the palmar skin is blanched. The patient is then instructed to unclench the fist, and then ulnar artery pressure is released while maintaining occlusion of the radial artery. The time required for palmar capillary refill is noted. An abnormal Allen test result was defined as a recovery time of more than 10 seconds. Ultrasonography measurements will be performed with a linear probe. The non-dominant hand of the patient will be fixed in the anatomical position on the arm chair. The wrist joint of patient will be extended to 30 degree with a wrist pad. The USG probe will be transversally placed 2 cm proximal to the styloid process and the short axes of the ulnar artery will be scanned. The blood fow of ulnar artery will be measured and recorded. | 5 minutes prior to anesthesia induction | 
| change of the radial artery diameter according to sex, age, height, weight and body mass index after the induction | Ultrasonography measurements will be performed with a linear probe. The non-dominant hand of the patient will be fixed in the anatomical position on the arm chair. The wrist joint of patient will be extended to 30 degree with a wrist pad. The USG probe will be transversally placed 2 cm proximal to the styloid process and the short axes of the radial arter will be scanned. The diameter of the radial artery will be measured and recorded. | 5 minutes following to anesthesia induction | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Ultrasonography, Radial Artery Diameter, Allen Test, Arterial Cannulation, Doppler Ultrasonography, Ulnar Artery