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Cold stimulation test for Raynaud's syndrome
DefinitionThis is a test that measures the temperature of each finger after being submerged in an ice-water bath.
How the test is performedA heat sensor is taped to your fingers and the temperature is recorded. Your hand is then immersed in ice water for 20 seconds. Then it is removed from the bath and the temperature recorded every 5 minutes until your finger temperature is the same as it was before the bath.
How to prepare for the testNo special preparation is necessary for this test.
For infants and children:
The preparation you can provide for this test depends on your child's age, previous experiences, and level of trust. For specific information regarding how you can prepare your child, see the following topics:
How the test will feelThere may be some discomfort while your hand is in the cold water.
Why the test is performedThis test is a screening tool for Raynaud's phenomena.
Normal ValuesNormally your finger temperature will return to normal within 15 minutes after the cold water exposure.
What abnormal results meanIf your finger temperature takes greater than 20 minutes to return to pre-bath levels, Raynaud's phenomena is indicated.
What the risks areThere are no risks associated with this test.
Special considerationsThis test should not be performed if the blood supply to your fingers is compromised or if your fingers are infected.
Update Date: 7/25/2003Lisa Christopher, M.D., Division of Rheumatology, Johns Hopkins Hospital, Baltimore, MD. Review provided by VeriMed Healthcare Network.
Last updated: Tue, 06 Jan 2009 00:20:03 GMT