Leaving a baby in a car seat for long periods is not recommended. Especially if your baby is a newborn.
Car seats were invented to support and protect a baby in an accident, NOT for sleeping in. It is inevitable, with the motion of the vehicle, for a baby to fall asleep and as such too many think it is also designed for sleeping in. There are many reasons why you shouldn’t leave a baby in a car seat to sleep:
- A young baby’s body is growing fast, and the shape of a car seat is not flat and therefore can create problems with back and spinal development
- Leaving a baby in a car seat too long day after day also contributes to Flat head syndrome.
- Positional Asphyxia – if the chin is left on the chest it restricts breathing and oxygen supply to the brain will keep dropping. The normal blood oxygen level is 98%+ but babies have been recorded as low as 83% in car seats when left in them too long. In fact the same study found that the oxygen level will continue to lower as long as the baby is left in the car seat. This why parents have sadly lost babies when left in car seats overnight.