Background. Ipsilateral phrenic nerve blockade is a common adverse event after an interscalene brachial plexus block. which can result in respiratory deterioration in patients with preexisting pulmonary conditions. Diaphragm-sparing nerve block techniques are continuing to evolve. https://www.bekindtopets.com/quick-grab-Great-Neck-Professional-Wood-Chisels-hot-value/