What is twilight anesthesia during a colonoscopy?

This question was asked in Irvine, California on 02/09/2012.
What is twilight anesthesia during a colonoscopy? Is that considered a virtual colonoscopy or do they do sedation during a normal colonoscopy as well?

Doctors Answers (3)

Harsha Vittal, M.D.
Answered on: 2/6/2012 1

Twilight anesthesia is sedation given during a colonoscopy to keep the patient comfortable during the procedure. Virtual colonoscopy is a CT scan that does not use sedation.

Shahram Javaheri, M.D.
Answered on: 2/6/2012 1

The term "twilight" is a layman's expression for the term "conscious sedation," a type of light sedation which is used during a standard colonoscopy. Virtual colonoscopy is the use of a high resolution CT scan to visualize the colon. Since it is non-invasive, sedation is not used during a Virtual Colonoscopy.

David Myles Nolan
Answered on: 2/6/2012 1

They do sedation during regular colonoscopy in the form of a 'twilight' sedation. This means a moderate sedative is given to make you sleepy, and to take away the anxiety and pain from the procedure - this type of anesthesia does not completely make you unconscious. Virtual colonoscopy refers to CT colonography which you can read more about on colonoscopy.com.