. >> reporter: which cia orbalk bought this stroller for her child, there was one thing on her mind. >> number one, this is your pride and joy, this is your baby. >> reporter: but according to a new 21-year study in the journal 1990 to 2010, 361,000 children went to the e.r. topping the list from injuries are children falling from the stroller or carrier and followed by the product tipping. >> these products are generally safe, however, injuries do occur and these injuries can be serious. >> reporter: traumatic brain injuries and concussions accounted for one-quarter of the injuries. >> we know that traumatic brain injuries or concussions could have long-term complications on cognitive development, so we want to make sure children are taking the steps they can to prevent these injuries from occurring on their children. >> reporter: the nationwide hospital association says always buckle up the children and lock the wheels to prevent it from rolling away, and don't hang heavy purses or bags on the handle. cia makes sure she always follows those. >> reporter: so for 6-week-old baby to s