Sister is 15. she got general anesthesia instead of local anesthetic during an upper gi endoscopy. it was 9 am and she got it through gas and iv. why?

Sedation: Most if not all patients require some sedation for endoscopies. Usually this is accomplished by medication through an iv. Some patients, usually children, do not want an IV while they are awake, so an anesthesiologist can use gas to sedate the patient and then place an iv. The rest of the sedation will be done via the iv. Local anesthetic alone is not usually effective.

Her age: For an endoscopy, a patient needs to be very still and not move. Most times this can be done with sedation given through an iv. If this cannot be done, than a general anesthesia is required. An endoscopy is never performed under just local anesthesia.