Study of Metabolic Effects of Pregnancy in Women With Cystic Fibrosis

OBJECTIVES: I. Compare the clinical status of pregnant vs non-pregnant women with cystic fibrosis. II. Determine glucose tolerance during each trimester of pregnancy in these women. III. Evaluate peripheral insulin sensitivity in these women. IV. Evaluate whole body protein turnover and hepatic glucose production in these women. V. Determine resting energy expenditure in these women.