Fifty-four pregnant women with HG were enrolled in
the HG/H. Pylori study. Criteria for the diagnosis of HG
included severe vomiting (more than 3 times a day),
weight loss (more than 3 kg or 5% of body weight), and
ketonuria. Patients with HG secondary to trophoblastic
disease and multiple pregnancies were excluded. All the
patients in the experimental group were 15 to 38 years
old. Their gestational age was between 6 and 16 weeks,
and the course of pregnancy was otherwise unremarkable.