Los Angeles, Nov 11 (IANS): A new federal report has claimed that the New York clinic where actress Joan Rivers stopped breathing made a number of errors during her medical procedure.

The report was released Monday and stated that Yorkville Endoscopy “failed to ensure that patient care services are provided in a manner that protects the health and safety of all patients”, and several procedures weren't performed correctly when Rivers went in for a routine throat procedure Aug 28, reports femalefirst .co.uk.

According to the filed documents, the medical team failed to notice that the actress' blood-oxygen level was dropping below normal in the 15 minutes before she stopped breathing, and inconsistently documented the amount of Propofol she was administered before the operation.

They also failed to weigh her before giving her the drug.

An ENT doctor without privileges to operate at the clinic was allowed to perform procedures on Rivers according to the report, and one member of staff took a picture of the star whilst she was sedated awaiting the procedure.

The document stated that the biggest error made by Joan's physicians was that they “failed to identify deteriorating vital signs and provide timely intervention during the procedure”.