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.
How long the procedural sedation lasts depends on the drugs administered -- it may be as few as five or 10 minutes or as long as an hour. Recovery is speedy, and you won't usually have the side effects associated with general anesthesia, such as vomiting, nausea or dizziness (although they can still occur).