Continuity mistake: When Mrs Beasley says "It just kept running out the other end", the bottle of urine is in her right hand, but in the next shot it is now in her left hand.
Continuity mistake: When Mr Carver tells Ellen to look at the couple dancing during the hospital party, he takes the candle off the table and you can see his napkin is flat, but in the next shot the napkin is all crumpled.
Continuity mistake: When the patient's stomach is expanding due to the faulty breathing apparatus, the patient in the bed next to him closes his book and puts it on his bed, but in the next shot the book is open again.
Continuity mistake: When Mr Carver and Ellen are in speaking in Mr Carver's office, Ellen hands him a letter to read and you can see he has put it down when he tells the patient to breathe out. A couple of shots later, he is seen putting it down again.
Continuity mistake: Watch the patient next to the man whose stomach is being inflated by the breathing apparatus. You can see that when he is reading his book, he is holding it by the bed sheets, but in the next shot he is holding the book much further up.