The words tijera and tijeras can be used interchangeably in Spanish to refer to a single pair of scissors.
Both IV sedation (twilight) and general anesthesia are used commonly for cosmetic or plastic surgery. Regardless of technique, the patient's vital signs must be monitored, which include but not limited to heart rate, blood pressure, and breathing rate.
http://www.aana.com/newsandjournal/D...214-p25-31.pdf The Difference Between CRNAs and AAs | TheCRNA.com - Everything Nurse Anesthesia. The biggest differences that you will see is the job opportunities for AAs is extremely limited compared to CRNAs and AAs cannot work without medical direction/supervision of an anesthesiologist.