Severe plagiocephaly in babies can lead to ear infections

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The recommendation to lay babies on their backs to sleep has reduced sudden infant death syndrome (SIDS), but has led to an increased number of infants with a skull deformity called deformational (or positional) plagiocephaly. Now new research suggests that infants with more severe plagiocephaly may have a higher rate of middle ear abnormalities associated with ear infections (otitis media), reports the September issue of The Journal of Craniofacial Surgery. The journal is published by Lippincott Williams & Wilkins, a part of Wolters Kluwer Health, a leading provider of information and business intelligence for students, professionals, and institutions in medicine, nursing, allied health, and pharmacy.

Given the potential impact on hearing and other aspects of child development, more research will be needed to clarify the risk of otitis media in infants with deformational plagiocephaly, according to researcher Adam Purzycki, BS, and colleagues of Wake Forest University Medical Center, Winston-Salem, NC.

Results Suggest Possible Increase in Otitis Media with Severe Plagiocephaly
Children with deformational plagiocephaly have flattening of the back of the head, ranging from mild to severe. In recent years, the number of infants with this form of plagiocephaly has increased exponentially as a result of the "Back to Sleep" campaign to prevent SIDS. The growing skull becomes deformed as a result of pressure from lying in the same position. For most affected infants, treatment consists of a helmet or band to gently mold the growing skull into a more normal shape.

The researchers asked the parents of 1,259 children with deformational plagiocephaly about their child's history of ear infections. Almost exactly half of the children had at least one ear infection before one year old—similar to the rate in the normal population. The rate was slightly higher for children with more severe plagiocephaly: 54 percent, compared to 49 percent in those with milder deformity.

In 124 children, the researchers performed a test called a tympanogram, done to measure pressures within the middle ear. Certain patterns of tympanogram results suggest the presence of otitis media.

The results showed "a marked trend" toward a relationship between otitis media-related abnormalities and the severity of plagiocephaly. "The more severe cases (types IV-V) of plagiocephaly had a higher percentage of otitis media than the less severe cases (types I-III)," the researchers write.

Hearing Loss Could Contribute to Developmental Problems
In more severe plagiocephaly, the skull deformity may cause the ear to move forward. Resulting abnormalities of the eustachian tube may cause problems with fluid drainage from the middle ear, promoting infections and otitis media. "The significantly high percentage of tympanogram readings that pointed to otitis media…suggests an overall malfunction of the middle ear drainage function of the eustachian tube in these children," according to Purzycki and colleagues.

There is growing attention to the possibility of long-term complications related to plagiocephaly, with some studies reporting developmental problems such as language disorders and learning disabilities. The new findings raise the possibility that at least some of these problems could be related to hearing loss—a known complication of persistent otitis media in children.

If so, then recognition and appropriate management of otitis media in children with deformational plagiocephaly might help to reduce these long-term developmental concerns. However, the researchers emphasize the need for more research to clarify the link between plagiocephaly and otitis media—including the clinical significance of the abnormal tympanograms.


The opinions expressed here are the views of the writer and do not necessarily reflect the views and opinions of News Medical.
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