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Hemidiaphragmatic Paresis. Interscalene block 100% incidence 25% to 32% reduction in pulmonary function Supraclavicular block 50% incidence No pulmonary function change Avoid both in at-risk patients Coracoid infraclavicular /axillary blocks Rare incidence.
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Hemidiaphragmatic Paresis Interscalene block 100% incidence 25% to 32% reduction in pulmonary function Supraclavicular block 50% incidence No pulmonary function change Avoid both in at-risk patients Coracoid infraclavicular/axillary blocks Rare incidence