Tourniquet Test: Assessing Capillary Fragility

The Tourniquet Test is a classic clinical method used to check capillary fragility. It helps doctors spot bleeding risks like dengue fever quickly. This simple assessment relies on a standard blood pressure cuff to apply controlled pressure. It stresses small blood vessels to see if they break under the added strain. Clinicians look for petechiae, which are tiny red spots that form on the skin. A positive result usually involves counting ten or more spots within a one-inch square area on the forearm, which indicates how well the vessel walls hold up against the pressure. To run the test, a professional inflates the cuff between systolic and diastolic pressure for five minutes. It acts as a handy bedside tool for triage in tropical medicine. Although it is an older method, it remains useful for identifying patients who need closer monitoring for bleeding issues.