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  • Title: [Indications and possibilities of blockade of the sympathetic nerve].
    Author: Meyer J.
    Journal: Reg Anaesth; 1987 Apr; 10(2):55-8. PubMed ID: 3615980.
    Abstract:
    Treatment of chronic pain through permanent or temporary interruption of sympathetic activity is marked by great clinical success, but nevertheless there are rather skeptical reports about long-term results of these blocks as therapeutic measures. There are many symptoms and signs of chronic pain, while diagnosis is expensive, the pathogenesis is complex, and the etiology is generally due to multiple factors. Indications for sympathetic blockade depend upon the possible means of access, as in the cervicothoracic, thoracic, lumbar, or sacral regions. General indications are: symptoms not limited segmentally within peripheral body areas; pain resulting from microtraumata and lesions of peripheral nerve branches; and pain caused by intensified sympathetic tone with consequent circulatory disturbances. Peripheral circulatory disturbances are the most common indication for sympathetic blockade, as the block produces a vasomotor reaction that leads to increased capillary circulation. Pain caused by herpes zoster, sudden hearing loss, hyperhidrosis, and pseudesthesia can also be influenced by sympathetic blockade. There are several possibilities for reducing or interrupting sympathetic activity; for us, however, blocking of the sympathetic trunk is the most important. During the last 16 years we performed 15,726 sympathetic blockades on 2385 patients, which included: 3735 stellate ganglion blocks, 6121 blocks of the lumbar sympathetic trunk, 5037 continuous peridural anesthesias, 29 blocks of the thoracic sympathetic trunk, and 12 celiac blocks. In 792 cases sympathetic blocks were performed using neurolytic drugs, in most cases 96% ethyl alcohol and less often 10% ammonium sulphate. Other possibilities, such as enteral administration or infusion of sympatholytic drugs, were not taken into consideration; regional intravascular injection of guanethidine can be recommended, however.(ABSTRACT TRUNCATED AT 250 WORDS)
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