Menstrual dysfunction in cystic fibrosis.

Several factors potentially involved in the menstrual dysfunction of some females with cystic fibrosis were analyzed by a retrospective chart review. The mean age of menarche for the cystic fibrosis patients was 14.4 years, compared to 12.9 years for American females (p less than 0.001). At last evaluation, comparison of the mean figures for amenorrheic patients and for menarchal cystic fibrosis patients reveals statistically significant differences in the age of diagnosis, weight-height index, weight, height, percent of body fat, weight percentile, and height percentile. The highest correlative was weight (r = 0.59). Of our cystic fibrosis patients who were menarchal, 95% had a weight greater than 82 pounds, whereas 75% of those who were amenorrheic weighed less than 82 pounds. Menstrual irregularities, sexual activity, and contraceptive use among these patients also is discussed.