Tourniquet test

Tourniquet Test

The Tourniquet Test (pronunciation: /ˈtʊər.nɪ.kɪt tɛst/) is a medical diagnostic procedure used primarily to identify the presence of Dengue Fever and other Hemorrhagic Fevers. The term "tourniquet" is derived from the French word "tourner", which means to turn.

Procedure

The Tourniquet Test involves inflating a Blood Pressure Cuff on the patient's arm to midway between the systolic and diastolic blood pressure for five minutes. The number of petechiae (small red or purple spots on the skin) that appear on the skin is then counted. A positive result, indicating a higher likelihood of Dengue Fever, is typically considered to be 20 or more petechiae per square inch.

Interpretation

The Tourniquet Test is not definitive proof of Dengue Fever, but it can provide a strong indication of the disease when used in conjunction with other diagnostic tools and clinical symptoms. It is important to note that a negative Tourniquet Test does not rule out Dengue Fever, and a positive test does not confirm it. The test is most useful in areas where Dengue Fever is endemic and can help guide further diagnostic testing.

Limitations

The Tourniquet Test has several limitations. It is not specific for Dengue Fever and can be positive in other conditions that cause increased capillary fragility. The test's sensitivity and specificity can also vary depending on the individual's age, sex, and underlying health conditions.

Related Terms

• Dengue Fever
• Hemorrhagic Fevers
• Blood Pressure Cuff
• Petechiae

External links

• Medical encyclopedia article on Tourniquet test
• Wikipedia's article - Tourniquet test

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