<Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (June 2017) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (June 2017) (Learn how and when to remove this template message) </Td> </Tr> <P> An operating theater (also known as an operating room, operating suite, operation theatre or operation suite) is a facility within a hospital where surgical operations are carried out in a sterile environment . </P> <P> Historically, the term "operating theatre" referred to a non-sterile, tiered theater or amphitheater in which students and other spectators could watch surgeons perform surgery . Contemporary operating rooms are devoid of a theater setting (though some in teaching hospitals may have small galleries), making the term "operating theater" a misnomer for the modern facility . </P>

What kind of procedure is carried out in a hospital operating theatre