There isn't a better technique than what the provider is best and most experienced at.
In general children are given:
1. In preop: a sedative preop (usually oral midazolam) and acetaminophen (to aid with pain).
2. In the OR they have an inhalation induction (breath a mixture of Anesthetic gas with Oxygen and Nitrous Oxide); once asleep they will insert and IV. Through this IV, they inject other medications, fluids, antibiotics, etc.
3. Your child will be kept asleep with either intravenous medication or Anesthetic gases mixed.
4. Will receive another form of non-narcotic medication, such as Ibuprofen or Ketorolac.
5. Will be given anti-nausea medication, may be given narcotic.
Anesthetics in the hands of an Anesthesiologist are very safe. Unless your child has congenital anomalies, including heart defects, is premature or has severe medical conditions, he does not need a Pediatric Anesthesiologist. All Board Certified Anesthesiologists have received training in Pediatric Anesthesia as part of a four-year Residency Program. Pediatric Anesthesiologists are reserved for critically ill children, premature children, or children with congenital anomalies or having complex surgical procedures.
In Florida, it is customary for most patients to receive Propofol deep sedation by an Anesthesiologist or a care team formed by an Anesthesiologist that medically directs a Nurse Anesthetist or a Certified Anesthesia Assistant.
There are other areas or States, where the Gastroenterologist that performs your colonoscopy, works with an RN that injects sedatives such as Midazolam and/or Narcotic Medications, such as Demerol or fentanyl through the procedure; this RN exclusively administers the sedatives and monitors your vital signs.
In those States, some insurances allow patients that have significant medical problems to have an Anesthesiologist administering the Anesthesia. Example, Coronary Artery disease, or COPD, or Severe Diabetes with Neuropathy, uncontrolled hypertension, etc. In this case, your Gastroenterologist knows how to request approval for an Anesthesiologist from the insurance.