title: Is fasting necessary for elective cerebral angiography?
abstract: OBJECTIVE
  In order to prevent unexpected events such as aspiration pneumonia, cerebral angiography has been performed under fasting in most cases. We investigated prospectively the necessity of fasting before elective cerebral angiography.
  
  
  METHODS
  The study is an open-labeled clinical trial without random allocation. In total, 2554 patients who underwent elective cerebral angiography were evaluated on development of nausea, vomiting, and pulmonary aspiration during and after angiography. Potential risks and benefits associated with fasting were provided in written documents and through personal counseling to patients before the procedure. The patients chose their fasting or nonfasting option. No restriction in diet was given after angiography. The patients were observed for 24 hours. Nausea and vomiting during and within 1 hour after angiography was considered as a positive event associated with cerebral angiography.
  
  
  RESULTS
  The overall incidence of nausea and vomiting during and within 1 hour after angiography was 1.05% (27/2554 patients). There was no patient with pulmonary aspiration. No statistical difference in nausea and vomiting development between the fasting and the diet groups was found.
  
  
  CONCLUSIONS
  The incidence of nausea and vomiting associated with cerebral angiography is low and not affected by diet or fasting. Pulmonary aspiration had no difference between the diet and the fasting group. Our study suggests that fasting may not be necessary for patients who undergo elective cerebral angiography.
authors.affiliation: Clinical Neuroscience Center, Seoul National University Bundang Hospital, Seongnam, Korea.
authors.forename: O-K
authors.initials: OK
authors.lastname: Kwon
authors.forename: C W
authors.initials: CW
authors.lastname: Oh
authors.forename: H
authors.initials: H
authors.lastname: Park
authors.forename: J S
authors.initials: JS
authors.lastname: Bang
authors.forename: H-J
authors.initials: HJ
authors.lastname: Bae
authors.forename: M K
authors.initials: MK
authors.lastname: Han
authors.forename: S-H
authors.initials: SH
authors.lastname: Park
authors.forename: M H
authors.initials: MH
authors.lastname: Han
authors.forename: H-S
authors.initials: HS
authors.lastname: Kang
authors.forename: S-K
authors.initials: SK
authors.lastname: Park
authors.forename: G
authors.initials: G
authors.lastname: Whang
authors.forename: B-C
authors.initials: BC
authors.lastname: Kim
authors.forename: S-C
authors.initials: SC
authors.lastname: Jin
mesh_terms: D000328:Adult; D002533:Cerebral Angiography / Q000706:statistics & numerical data*; D005215:Fasting; D005260:Female; D006801:Humans; D015994:Incidence; D007723:Korea / Q000453:epidemiology; D008875:Middle Aged; D009325:Nausea / Q000453:epidemiology*; D011015:Pneumonia, Aspiration / Q000453:epidemiology*; D018570:Risk Assessment; D012307:Risk Factors; D014839:Vomiting / Q000453:epidemiology*; D055815:Young Adult