The Effect of Interscalene Peripheral Nerve Block With 0.25% Bupivacaine vs 0.125% Bupivacaine on Lung Function
Status:
Completed
Trial end date:
2010-02-01
Target enrollment:
Participant gender:
Summary
Peripheral nerve blocks are used to provide post-operative pain relief. Nerve blocks in the
neck, in the interscalene area, provide pain relief after shoulder surgery but can cause
temporary weakness or paralysis of the diaphragm. The investigators hypothesized that a lower
concentration of bupivacaine would cause less weakness of the diaphragm but still provide
good pain relief. Lung function and pain control was studied after interscalene peripheral
nerve block with 20 milliliters of 0.25% bupivacaine or 0.125% bupivacaine.