Endocrine Abstracts

Introduction: The thyrotrophic effects of human chorionic gonadotrophin (HCG) are responsible for a physiological rise in fT4 and suppression of TSH in early pregnancy. Hyperthyroidism in this period is mostly due to gestational transient thyrotoxicosis (GTT) which is frequently mild and resolves spontaneously by 18 weeks, or due to Graves’ disease (GD) which would require closer monitoring through pregnancy (1). The pathophysiology of hyperemesis gravidarum is unclear, a...