A 'healthy and happy' baby boy tragically died after being left on a sofa for just ten minutes while his mum checked on her other son.
She desperately tried to resuscitate the two-month old when she returned to find him "pale and clammy", and noticed he had stopped breathing, Grimsby Live reports.
But the infant could not be revived and died from Sudden Infant Death, an inquest has heard.
A hearing at Cleethorpes Town Hall on Tuesday, was told how on December 15, 2018, the little boy and his father had been sleeping on one side of an L-shaped sofa.
His mother, who had been struggling to sleep, was watching a film and got up at around 2am when she heard her other son wake.
She told the inquest she had left her baby on top of an adult sized duvet, which was tucked under his arms.
"I went to check on my other son who woke during the night and was with him for about ten minutes," she said.
"When I returned he was asleep where I had left him, but I noticed that he looked quite pale and clammy.
"So I nudged his shoulder and he didn't react and then I noticed some blood on his nose and that he wasn't breathing."
The inquest heard that the infant had suffered from a cough and a cold in the three days leading up to the tragedy and had been taken to the out-of-hours GP.
But the doctor concluded that despite a virus, he was healthy and happy and had no signs of any injuries, and his parents took him back to his dad's parents' home where they had been staying for a few days.
The baby's older brother, who was three, also had a cold at the time.
When she found her son unresponsive, the mum quickly woke her partner, who was sleeping touching distance away from his son.
They rang the emergency services before starting CPR.
An ambulance arrived at the house within ten minutes and took the child to Grimsby's Diana, Princess of Wales hospital.
During the trip paramedics tried to resuscitate the baby boy numerous times, but were unsuccessful.
Further efforts were made inside the hospital, but sadly the young baby could not be saved and was pronounced dead shortly after 3am.
A post-mortem examination of the baby, which was carried out by Dr Cohen of Sheffield Children's Hospital, found that the baby had no toxins in its system and other than an inflamed throat, appeared to be a normal healthy baby boy.
The doctor said that she concluded that the child had died from Sudden Infant Death.
Dr Cohen said: "Sudden Infant Death is the most common form of infant death in the developed world.
"There are a number of risk factors that can lead it to be more common, such as the age of the child and gender, with males babies dying 50 per cent more than females.
"A baby sleeping on its side can also increase these risks and sleeping under or on top of an adult duvet can cause a baby to overheat.
"There are ways to reduce these risk factors, with babies sleeping on their backs in a cot without a pillow, and they should never be placed next to a radiator."
Acting coroner for North East Lincolnshire, Mark Kendall, ruled that that the baby died of Sudden Infant Death Syndrome.
"Sometimes with a child's death we are unable to understand and cannot explain how they died," he said.
"Your son died of natural causes described as Sudden Infant Death Syndrome.
"I am sorry that we are unable to tell you a proper reason why your son died."
What can I do to help prevent SIDS?
Do:
* Always place your baby on their back to sleep
* Place your baby in the "feet to foot" position – with their feet touching the end of the cot, Moses basket, or pram
* Keep your baby's head uncovered – their blanket should be tucked in no higher than their shoulders
* Let your baby sleep in a cot or Moses basket in the same room as you for the first 6 months
* Use a mattress that's firm, flat, waterproof and in good condition
* Breastfeed your baby, if you can – see benefits of breastfeeding for more information
Do not:
* Smoke during pregnancy or let anyone smoke in the same room as your baby – both before and after birth
* Sleep on a bed, sofa or armchair with your baby
* Share a bed with your baby if you or your partner smoke or take drugs, or if you've been drinking alcohol
* Let your baby get too hot or too cold – a room temperature of 16C to 20C, with light bedding or a lightweight baby sleeping bag, will provide a comfortable sleeping environment for your baby
Source: NHS
