PEDIATRICS Vol. 107 No. 2 February 2001, pp. 265-269
Received Nov 8, 1999; accepted Jun 13, 2000.
From the Department of Pediatrics, University of Connecticut, Connecticut Children's Medical Center, Hartford, Connecticut.
Objective. In this investigation, we sought to prospectively document the natural history of severe breath-holding spells (BHS) among children with both cyanotic and pallid BHS who were referred for neurologic consultation.
Design. Prospective cohort study.
Methods. A structured interview was undertaken at the time of initial consultation and at subsequent 1-year intervals regarding type of BHS, frequency of spells, associated phenomenon, sequelae, family history, and age at termination of spells.
Results. A total of 95 children (48 boys, 47 girls) with
BHS were identified and followed over a 9-year interval. There were no
significant differences between genders. Median onset age was between 6 and 12 months old with 15% presenting younger than 6 months. A median frequency of spells was weekly with 30% experiencing 1 or more spells
per day. The median age at peak frequency was between 12 and 18 months
old with a range extending from 6 months to 4 years of age. Of the
patients whose BHS had remitted for >12 months' time
(n = 67), the last spell occurred at a median age
of 37 to 42 months. Of those children whose BHS were still occurring,
the oldest age at time of latest spell was at 7 years old. Hypoxic convulsions were associated with BHS in
15% of all participants. A
positive family history of BHS was identified in 34% of all families
with equal frequency distributed between paternal and maternal sides.
Conclusions. In this study, new data concerning the natural history of BHS have been determined. The information is important for family counseling and identifying intervention strategies, and serves as baseline data to evaluate the efficacy of future treatment approaches. Key words: breath-holding, pallid infantile syncope, cyanotic spells, anoxic convulsions.
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