Mostly, we're lucky; our momentary lapses are harmless. But some close calls are scarier  -- what mom hasn't seen her child take a fall and felt her own heart plummet?  -- and leave us swearing, I'll never do that again!

These moms, who tell stories of little blunders that almost caused big tragedies, were lucky too. But we can't depend on good fortune to protect our children.

Here, how these mishaps might have been prevented:

A Risky Ride

"Shortly after Madeline was born, I took her to work to show her off. I was nervous about riding the commuter train with her, so my parents came with me. At the station, we rode an escalator with Madeline in her stroller, and as I reached the top, I raised the wheels and then put them down, missed, and hit the edge of the metal lip. To my horror, the stroller started to go up and over the front wheels as I was being pushed toward it by my mother  -- and the twenty or so people behind her! Luckily, my father was there to grab it in the nick of time. Madeline was okay, but I still cringe when I think about that incident."
 --Lisa, Barrie, Ontario

How to stay safe:

Take the time to look for an elevator, even if it's a hassle. Most public places like train stations and shopping centers are handicap-accessible, so they should have one. Escalator steps are too narrow to accommodate both the front and the back wheels of strollers, which makes them more likely to flip, says Robert Tanz, M.D., former chairman of the American Academy of Pediatrics's Section on Injury and Poison Prevention. And pushing a stroller onto the escalator prevents you from holding the handrail, so it's easier for you to lose balance.

If there's no alternative, fold your stroller and have someone else carry it. (If you're alone, ask an attendant or a passerby to hold it for you.) Then carry your child onto the escalator; this also keeps shoelaces, drawstrings, and fingers from getting caught.

Jennifer Tzeses is an associate editor at Martha Stewart Weddings.

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