Hiperemezis and Serotonin Elevated Serum Serotonin Levels in Hyperemesis

The occurrence of severe nausea and vomiting of early pregnancy (hiperemezis gravid arum) is estimated between 0.3% to 1% of all pregnancies. Although hiperemezis gravid arum has been recognized for a long time, its pathophysiologic mechanisms are still poorly understood. Many theories have been advocated, but to date none of these have been convincing. It has been demonstrated that the nausea and vomiting associated with increased in serotonin liberation. This has provided a rationale for the treatment of these symptoms with specific serotonin antagonists. The aim of this trial was to investigate the possible relationship between hiperemezis gravid arum and serotonin liberation.