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Tourniquet Test

The document describes the tourniquet test, a common pediatric procedure used to determine hemorrhagic tendency and as one of the requisites for diagnosing Dengue Hemorrhagic fever. The test involves inflating a blood pressure cuff above the cubital fossa for 5 minutes, then counting the number of petechiae within 1 square inch after releasing the cuff, with more than 20 petechiae considered abnormal and indicative of thrombocytopenia, platelet dysfunction, or capillary fragility. However, the test has low specificity and may be positive in other viral infections like acute gastroenteritis, while a negative test can occur in the early stage of dengue fever.

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705 views1 page

Tourniquet Test

The document describes the tourniquet test, a common pediatric procedure used to determine hemorrhagic tendency and as one of the requisites for diagnosing Dengue Hemorrhagic fever. The test involves inflating a blood pressure cuff above the cubital fossa for 5 minutes, then counting the number of petechiae within 1 square inch after releasing the cuff, with more than 20 petechiae considered abnormal and indicative of thrombocytopenia, platelet dysfunction, or capillary fragility. However, the test has low specificity and may be positive in other viral infections like acute gastroenteritis, while a negative test can occur in the early stage of dengue fever.

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abd
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Asdawi Dicritan

Common Pediatric Procedures

A. TOURNIQUET TEST or Rumpel-Leede or Capillary Fragility Test

Indications: determine hemorrhagic tendency; defined by WHO as one of the requisites for
diagnosing Dengue Hemorrhagic fever

Disadvantages: has low specificity; maybe (+) in other viral infections (eg. acute gastroenteritis);
a (-) test may occur in early stage of dengue fever.

Procedure:

1. BP cuff is inflated at a point between SBP and DBP (mean BP equals SBP plus DBP, then
divide by 2) above the cubital fossa for 5 minutes.

2. After release of the cuff, the number of petechiae within 1 square inch below the antecubital
fossa is counted

3. >20 petechiae is abnormal; indicative of thrombocytopenia or platelet dysfunction or capillary


fragility

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