THIEVES left Dewsbury and District Hospital in disarray last week when they stole vital equipment.
Staff had to re-arrange child patient operations because the medical gas room serving the Boothroyd Centre, which handles day case surgery, was broken into early last Friday morning.
Cabling was stolen, affecting the gas supply to the theatres, meaning that no surgery could take place there.
Children were still able to have their surgery in another part of the hospital, however.
David Melia, director of nursing and quality at the Mid Yorkshire Hospitals NHS Trust, which runs Dewsbury Hospital, said at the time: “Thanks to the quick actions of staff who spotted the problem early this morning we have managed to do all the surgery we had planned today so no children have suffered.
“Whoever stole the cabling probably isn’t aware of the impact this would have but, when something like this happens, it very quickly impacts on the care and services we provide.
“If anyone knows anything about the break-in I would urge them to contact the police.”
A spokesman for West Yorkshire Police said that officers are investigating the theft of about three metres of copper piping and various couplings at the hospital between 11pm on Thursday and 7am on Friday.
Anyone who witnessed any suspicious activity or has any information that could help the investigation is asked to contact officers via 101 quoting crime number 13170549568.