Incidence of hemi-diaphragmatic paresis after ultrasound-guided intermediate cervical plexus block: a prospective observational study

ConclusionIntermediate CPB using 0.2  ml/kg of 0.25% ropivacaine at the C4–5 intervertebral level did not cause ipsilateral hemidiaphragmatic paresis. This may imply that the effect of the intermediate CPB on the phrenic nerve is not significant.
Source: Journal of Anesthesia - Category: Anesthesiology Source Type: research