Sir.—The value of nutritional supplementation in cystic fibrosis (CF) has been raised in the February issue of the Journal (129:165, 1975). The results of one year of "complete" dietary supplementation in patients with CF receiving enzyme replacement were described as promising, but "not definitive." When experimental and control groups were compared, the progression of changes in the chest roentgenograms was similar in both groups, and no significant difference was found in the rates of increase of height.
Duke Medical Center and the National Institutes of Health have analyzed the maximum achieved heights
Percentile distribution of maximum achieved heights and weights of 60 persons over age 20 with cystic fibrosis. Percentiles determined by comparison with Iowa growth charts up to age 182; extrapolated beyond age 18 by comparison with figures published by Montoye et al.3
MAXIMUM ACHIEVED HEIGHTS AND WEIGHTS 1% 10% 25% 50% 75% 90% 99% 100%
LOBER CW. Nutritional Supplementation in Cystic Fibrosis. Am J Dis Child. 1975;129(10):1239. doi:10.1001/archpedi.1975.02120470079026
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