Anatomy: Ultrasound guided interscalene block is performed at the root/trunk level of the brachial plexus (approx. C6/7 vertebral level, corresponding to the cricoid cartilage level). At this level, the roots/trunks lie wedged between the scalene muscles (Fig.1).ig. 1. Interscalane nerve block: illustration of the roots/trunks at the C6/7 vertebral level lying in between the anterior and middle scalene muscles. At the immediate supraclavicular level, the trunks/divisions are closely grouped superolateral (and posterolateral) to the subclavian artery.
When a word like and, or, and but (called conjunctions) joins two standalone sentences, you should put a comma before it. (The real name for a standalone sentence within a longer sentence is independent clause .). Words like and, or, and but are known as conjunctions.
You need a comma after âmovieâ because this and only this is Mr. Allenâs newest movie in theaters, and before âJessieâ because she and only she is the writerâs oldest friend. The syntactical situation Iâm talking about is identifier-name.therwise, no comma. That explains an exception to the only-thing-in-the-world rule: when the words âa,â âanâ or âsome,â or a number, come before the description or identification of a name, use a comma. A Bronx plumber, Stanley Ianella, bought the winning lottery ticket.