A mum-of-six who died while pregnant with her seventh child had cocaine in her system that may have "contributed" to the tragedy, a coroner said.

Lindsey Ann Hughes, 34, died in hospital 13 days after collapsing in the kitchen of her home.

Coroner Dewi Pritchard Jones concluded the death of Ms Hughes on March 27 was due to natural causes.

But he told an inquest "if she had not taken cocaine in the past the probability is that she would have survived the bronchopneumonia, but we cannot be sure."

He issued a warning to the public that cocaine can and does cause long-term issues, North Wales Live reports .

Miss Hughes, who was 15 weeks pregnant with a son at the time of her death, was found to have 'abnormally high' levels of the cocaine in her system.

But the coroner said it was "not a drug death".

She had bronchopneumonia, which caused her to collapse and led to respiratory failure.

Lindse, 34, died in an intensive treatment unit in hospital

At Miss Hughes' inquest held in Caernarfon, Wales, coroner Pritchard said an "abnormally high level eight times over the level for driving" of cocaine was found in her system, which would have contributed to her death.

A post-mortem examination revealed she had damage to her heart known as cardiac fibrosis, which can be caused by chronic cocaine use.

The baby Miss Hughes was carrying at the time of her death was said to be a "perfectly healthy male foetus".

Mr Pritchard said: "I am seeing far too many cocaine deaths as the use of cocaine in this part of the world is very common.

"Cocaine damages the heart by killing off patches of heart tissue and causes a tightening of the vessels.

"Even low levels of cocaine can cause catastrophic results and repeat use causes more and more damage.

"The public think cocaine doesn't do any long-term harm but it does. Cocaine use can and does cause long term issues."

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He said Miss Hughes died as a result of respiratory failure due to the bronchopneumonia but cocaine toxicity was a contributing factor: "If she had not taken cocaine in the past the probability is that she would have survived the bronchopneumonia, but we cannot be sure.

"Because of the bronchopneumonia she died of natural causes, this is not a drug death, the cocaine contributed but did not ultimately cause her death."

It was also noted that Miss Hughes' immune system would have been suppressed due to the fact she was pregnant. At the time of her death, her friend Helen Evans described her as "full of life" and a "brilliant mother".

"She was a devoted mother and partner, caring daughter and joyful sister - her death has left a massive hole in so many people's lives", she said.