Adhd, lack of sleep linked

Get Some Sleep: ADHD, sleep disorders often entwined
January 4th, 2011
11:25 AM ET

The young mother looked tired and sad, and when she started to speak, her voice quivered with frustration:  “I don’t know what we’re doing here.  Jimmy sleeps fine.  It’s the other 14 hours of the day that’s the problem.”

The reason she was there in my sleep center was because her 6-year-old son, Jimmy, was being evaluated for ADHD (attention deficit hyperactivity disorder).  Her astute pediatrician was up on the latest research that shows an association between sleep disorders in school-age children and behavior disorders such as ADHD.  The sleep disorder that has been studied the most in this regard is obstructive sleep apnea, or OSA.

There are many population studies from all over the world showing that approximately 2-3% of children have OSA.  Just as in adults, this disorder is caused by a collapse of the upper airway during sleep.  This results in a drop in oxygen, a rise in carbon dioxide, and fragmented sleep because the brain is disturbed by these fluctuations in oxygen and CO2.  The classic example of a kid with sleep apnea is the skinny kid with big tonsils.  Often these kids also have large adenoids, which make it difficult for them to breathe through their nose even in the daytime.  So one clue that kids have OSA is if they have trouble breathing in the daytime, whether from chronic congestion, allergies or asthma, then they just might have problems breathing at night.

Because of the growing problem of pediatric obesity, we are starting to see a new group of pediatric OSA patients who have weight as the major contributing factor to their sleep apnea.

The telltale sign of pediatric sleep apnea is the same as for adults:  snoring.  Although with children, observers often describe “heavy or rapid breathing” rather than snoring.  Per the recommendations of the American Academy of Pediatrics, pediatricians are supposed to ask about sleep problems and about snoring at every well-child visit.  I am afraid that they are already overburdened by all the things they must check and ask about.  So it is not surprising that if the parents don’t complain about the child’s sleeping habits, then often this vital aspect to growth and development can get overlooked.

And parents of kids with sleep apnea often have no idea that their children have disturbed sleep.  These are usually kids who go through their bedtime routine with little resistance, including even the children with behavior problems in the daytime, and they seem to fall asleep readily, and as far as the parents know, they sleep through the night without disturbing them.



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