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 physical change is any change NOT involving a change in the substance's chemical identity. (1) any phase change. Moving between solid, liquid and gas involves only the amount of energy in the sample (this amount is the subject of future lessons). There is no effect on the chemical identity of the substance.