Student, 24, died after inhaling up to 'three big bottles' of nitrous oxide a day, inquest told
10 April 2024, 14:11 | Updated: 10 April 2024, 14:13
A 24-year-old business student died after inhaling up to three bottles of nitrous oxide a day, an inquest has been told.
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Ellen Mercer, 24, was rushed to hospital in the early hours of February 9 in 2023 after she reported that she was unable to walk and would fall over when she tried, Berkshire coroner's court heard.
She was treated by medical staff at Wexham Park Hospital Emergency Department but died around 24 hours later at 12.52am on February 10.
Senior coroner Heidi Connor said "part of her cause of death" was connected to "nitrous oxide gas" - also known as laughing gas.
A post-mortem report found Ms Mercer's death was caused by bilateral pulmonary thromboembolism, deep vein thrombosis, and "long-term complications of nitrous oxide use", the inquest heard.
Michaela Kirtley, an emergency medical technician from Phoenix Response Services, attended Ms Mercer's home on February 8.
When she arrived at the scene, she was shown to the bedroom by Ms Mercer's boyfriend.
"I took notice of the room," she said.
"There were no sheets on the bed at all. There was just the duvet, severely stained. The room was bare."
She said the scene made it clear to her that she was dealing with a "vulnerable person".
Ms Mercer "was talking as normal", and the only one of her vital signs that was outside the normal range was her heart rate, which could have been due to anxiety, she said.
Ms Mercer told her that she had burned her legs after spilling a gas canister on them and that she had been unable to walk or go to the toilet for two weeks, she said.
Ms Kirtley checked the wounds on Ms Mercer's legs, which she described as "pussy".
She said the 24-year-old looked six months pregnant.
Ms Mercer's boyfriend showed her a box of gas canisters, which she identified as nitrous oxide.
"I had never seen such big bottles," she said.
She told the inquest that the canisters were 600g and that Ms Mercer's boyfriend said she took "two to three bottles" per day, but had slowed down in the last couple of weeks.
Ms Mercer told her she had passed out and the bottle had fallen on her legs.
At the time of the student's death, possession of laughing gas with the intent of getting high was not illegal. It was made a Class C drug, in November 2023.
The inquest continues.
