Firstly, it is clear that the safest way for babies and children to travel is always in an approved child restraint system appropriate for their size and weight.
It is not recommended that babies spend more than an hour and a half sitting in their car seat because of so-called postural asphyxiation. It is advisable to take a break during the trip to change the position of the baby so that they can stretch. This avoids the risk of bradycardia and of the child having difficulty breathing. In addition, it should be borne in mind that this posture is also associated with apnea and oxygen desaturation.
The fact that a child tends to sit in the form of ‘C’, a position is not the most appropriate. Hence the importance of changing every hour and a half. In any case, it should be borne in mind that the ‘egg-shaped’ chairs, better known as cuckoo or maxi-cosi, are safer in avoiding the consequences of a traffic accident than a carrycot.
Pediatrics magazine published a study in 2001 that analyzed 100 babies, 50 of whom were premature at 36 weeks and they were monitored for 60 minutes in car seats.After that time, blood oxygen saturation dropped from 97% to 94%. In seven cases, it dropped to 90%. In addition, 12% of premature babies suffered apnea or bradycardia.
As for older children, it is also advisable to change position every 2 hours or, of course, whenever necessary so that they can stretch.
To avoid bad postures, as far as possible, care should be taken to ensure that children have a correct posture in the seat. It is advised that shoulders are kept well attached to the backrest. To do this, the harness must be tight. In this way, the body is prevented from moving forward. Remember that babies should be more inclined, almost lying down.
However comfortable it may seem that children are in their car seat, it is necessary to avoid prolonged times and to take breaks every hour and a half to two hours so as to remove the baby and / or the child from the child restraint system. This should be the case even if the child is sleeping.