0
The Allen's test assesses collateral circulation in the hand, in 2 steps. Step 1 occludes the radial artery for several minutes and compares the hand color to the other hand. The hand is said to have sufficient collateral circulation through the ulnar artery if there is no change in color. Step 2 occludes the ulnar artery. A change in hand color means the potential for radial artery occlusion is high. That is a positive Allen's test, which contraindicates radial-artery puncture Modified Allen's Test The procedure for performing a modified Allen's Test is as follows: 1. Instruct the patient clench his/her fist, or if the patient is unable, you may close the hand tightly. 2. Using your fingers, apply occlusive pressure to both the ulnar and radial arteries. This maneuver obstructs blood flow to the hand. 3. While applying occlusive pressure to both the arteries, have the patient relax his/her hand. Blanching of the palm and fingers should occur. If it does not, you have not completely occluded the arteries with your finger. 4. Release the occlusive pressure on the ulnar artery. You should notice a flushing of the hand within 5 to 15 seconds. This denotes that the ulnar artery if patent and has good blood flow. This normal flushing of the hand is considered to be a positive modified Allen's test. A negative modified Allen's test is one in which the hand does not flush within the specified time period. This indicates that ulnar circulation is inadequate or nonexistence. The radial artery supplying arterial blood to that hand should not be punctured.
Add your answer:
Earn +20 pts
What is difference between beta and alpha test Brief?
A brief explanation of the difference between beta and alpha test is that alpha test is usually in-house and is part of basic development. Beta test is right before product release and typically includes customer input.
What is the difference between one-tailed and two-tailed test?
no tail
What is the difference between 2 sample z test statistic and 2 sample t test statistic?
erwtwertgrtewh
What is difference between regression testing and retesting?
A regression test is a test where a previously known bug is tested for after a change. A retest is simply repeating a test.
Difference between quantitative and qualitative test?
Qualitative test represents the substance and a quantitative test shows the amount.First Deals with descriptions, second one with numbers
What is the difference between diagnostic test and proficiency test?
what is the difference between proffiency and diagnostic test
What is the difference between proficiency test and diagnostic test?
what is the difference between proffiency and diagnostic test
What is the difference between a test and a demonstration?
The difference between a test and a demonstration is that a test is to be taken and answered and a demonstration is to be demonstrated and be told to the class
Can you tell the difference between Concetta and Vivian's in a drug test?
Can you tell the difference between Vyvanse and Concerta in a drug test
What is the difference between first flight and introduction in an aircraft?
There is lot of difference between test flight/air test/first flight.
What is the difference between bome marrow and FISH test in CML?
what is the difference between in bone marrow and FISH test in chronic myloid leukemias
Is there a statistical test to assess the difference between two ratios. I have numbers which are ratios and want to test whether there is a statistical difference between them?
You can use the z test for two proportions. The link below will do this test for you.
What is the difference between jackup and semisub rig?
<a href="http://test">test</a>
Difference between submaximal test and maximal test?
submaximal test is using ekg or other medical test
How do you use an F-test?
test similarity or difference inmeans between two or moregroups.
What is the difference between internal test and external test?
internal test - class test- pen and paper test. external test - exams - yearly.
What is t Test?
t-test is the statistical test used to find the difference of mean between two groups
