The goal of the continuous interscalene block is similar to the non-ultrasound-based techniques: to place the catheter in the vicinity of the trunks of the brachial plexus between the scalene muscles.The procedure consists of three phases: needle placement, catheter advancement, and securing of the catheter.he goal of the continuous interscalene block is similar to the non-ultrasound-based techniques: to place the catheter in the vicinity of the trunks of the brachial plexus between the scalene muscles.
Answers. Best Answer: It should be a chemical change, since it is likely that a reaction took place. Color is a physical characteristic of a substance, but a change in color is not.
A) The condensation of steam on a mirror is an example of a physical change. B) The burning of a piece of charcoal to a white powder is an example of a physical change. C) Evaporation of water from a fish tank is evidence of a physical change. D) The fact that sulfur is a yellow powder is a physical property.