Why the study?
Assessing skin temperature to confirm lumbar sympathetic ganglion block effectiveness occasionally gives false negatives in peripheral arterial disease, prompting evaluation of laser speckle flowgraphy to detect foot blood flow changes.
Does laser speckle flowgraphy (LSFG) detect changes in foot blood flow after a lumbar sympathetic ganglion block in a patient with peripheral arterial disease?
Comparison
Foot blood flow measured by LSFG before vs after LSGB
Design
Case report
Authors
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LSFG may detect LSGB effects on foot perfusion in PAD missed by temperature; this case report leaves open its clinical utility pending validation.
Does laser speckle flowgraphy (LSFG) detect changes in foot blood flow after a lumbar sympathetic ganglion block in a patient with peripheral arterial disease?
Laser speckle flowgraphy may be a useful noninvasive tool to assess blood flow changes in patients with PAD undergoing sympathetic blocks, especially when skin temperature changes are unreliable.
Kanao-Kanda et al. (2021) studied this question.
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