- Tourniquet test
Tourniquet, see that article"
A tourniquet test (also known as a Rumpel-Leede Capillary-Fragility Test or simply a capillary fragility test) determines
capillaryfragility. It is a clinical diagnosticmethod to determine a patient's haemorrhagic tendency. It assesses fragility of capillary walls and is used to identify thrombocytopenia(a reduced plateletcount).
The test is defined by the WHO as one of the necessary requisites for diagnosis of
Dengue fever. A blood pressure cuffis applied and inflated to a point between the systolicand diastolic blood pressures for five minutes. The test is positive if there are more than 20 petechiaeper square inch (a petechia is a small red or purple spot on the body, caused by a minor hemorrhage).
This test does not have high specificity. Interfering factors with this test are women who are premenstrual, postmenstrual and not taking hormones, or those with sun damaged skin, since all will have increased capillary fragility.(Pagana, & Pagana, 1998; Tsai, 2000).
At least one insurance company,
Aetna, has determined that the Rumpel-Leede test is obsolete or unreliable and has been replaced by more advanced procedures. [ [http://www.aetna.com/cpb/medical/data/400_499/0438.html Aetna] Clinical Policy Bulletin: Obsolete and Unreliable Tests and Procedures]
The test remains an essential part of the assessment of a patient who may have
dengue haemorrhagic fever.
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