Question

anes·the·tize
  (US)   ( or Brit   anaes·the·tize  or   anaes·the·tise) /əˈnɛsθəˌtaız/  verb  , -tiz·es, -tized, -tiz·ing [  + obj  ]
   medical   : to give drugs to (a patient) so that no pain can be felt : to give an anesthetic to (a patient)
   The doctor anesthetized the patient by/with an intravenous injection.
   She was anesthetized before the operation.