EFFECT OF PREGNANCY ON THE CLINICAL COURSE OF A COHORT OF WOMEN WITH INFLAMMATORY BOWEL-DISEASE

The incidence of relapses of inflammatory bowel disease in pregnancy r anges from 20 to 35%. The effect of pregnancy on Crohn's disease and u lcerative colitis after pregnancy has been investigated here, During t he survey period, 29 pregnancies occurred in 18 Crohn's patients, and 25 in 19 ulcerative colitis patients, Incidence of relapses during pre gnancy and post-partum was 14 and 17% in Crohn's, and 36 and 12% in ul cerative colitis. Fourteen Crohn's patients (17 pregnancies) and 17 ul cerative colitis patients (19 pregnancies) were followed for 3 years b efore pregnancy and for 4 years after delivery, During the 3 years aft er pregnancy, the number of relapses/year was significantly lower comp ared to the 3 years before pregnancy and to the incidence in controls, both in Crohn's (p < 0.05) and ulcerative colitis (p < 0.005). Change s in nutritional status were recorded in 41% of Crohn's, but. in none of the ulcerative colitis patients. The reduced incidence of relapses following delivery in Crohn's patients was more marked in the 10 with normal nutritional status at the time of conception (70% reduction in number of relapses, p < 0.05), while in the 7 significantly underweigh t patients, the reduction was slight (27% reduction in number of relap ses, p = NS). In conclusion, the incidence of relapses in the first 3 years after pregnancy is lower than in the pre-pregnancy period, In Cr ohn's disease, the effect is more evident in patients with normal nutr itional status at the time of conception than in malnourished patients .