Assessment of preprocedure difference in the supine and dependent transcutaneous tissue oxygenation to prognosticate pain relief, following chemical lumbar sympathectomy for critical limb ischemia in thromboangiitis obliterans

Context: Chemical lumbar sympathectomy (CLS) is performed in thromboangiitis obliterans (TAO) for relief of rest pain. Interruption of sympathetic innervation causes improvement in tissue oxygenation and is reflected in transcutaneous partial pressure of oxygen (TcPo2). There is very little data available to guide patient selection for CLS. Aims: The primary objective was to assess if preprocedure difference in TcPo2measured in supine and...