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Phrenic Nerve Paralysis clinical trials

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NCT ID: NCT01784601 Suspended - Clinical trials for Phrenic Nerve Paralysis

Incidence of Hemidiaphragmatic Palsy After Interscalene Block

Start date: December 2016
Phase:
Study type: Observational

Primary objective of this study is to find out the incidence of hemi-diaphragmatic palsy associated with interscalene block done under ultrasound guidance. Primary hypothesis: • There is an incidence of hemidiaphragmatic palsy ranging fron 33-100 % after an interscalene block. Secondary hypothesis - The incidence of hemidiaphragmatic palsy is much less than 33% when the block is done using ultrasound. - The incidence of hemi-diaphragmatic palsy is directly proportional to volume of local anaesthetic injected. - The incidence of hemi-diaphragmatic palsy is directly proportional to concentration of local anaesthetic injected.