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.
By Anne Marie Helmenstine, Ph.D. Physical Change Definition: A physical change is a type of change in which the form of matter is altered but one substance is not transformed into another.Examples: An example of a physical change is crumpling a sheet or paper or breaking a pane of glass or freezing water into ice.y Anne Marie Helmenstine, Ph.D. Physical Change Definition: A physical change is a type of change in which the form of matter is altered but one substance is not transformed into another.