Quantitative Sudomotor Axon Reflex Test QSART

QSART quantitatively measures axon-reflex mediated sweating in response to acetylcholine. Both the afferent and efferent pathways of this test are via sympathetic postganglionic fibers to eccrine sweat glands. The QSART provides a sensitive, reproducible, and accurate measurement of postganglionic sudomotor function. Abnormalities in QSART suggest postganglionic sympathetic dysfunction [12].

In our case, there was more QSART impairment in the distal sites compared to the proximal sites. We observed a length-dependent pattern of impairment suggestive of postganglionic sympathetic neuropathy.

0 0

Post a comment