Methods: A study was made of the deliveries of 446 healthy primiparas in a prospective cohort study performed at
Soder Hospital, Stockholm, Sweden. Samples of amniotic fluid were collected at delivery and the levels of amniotic
fluid lactate (AFL) were measured to give an indication of the metabolism of the uterine tissue. Obstetrical data
were collected from birth records.
Postpartum, all the women included in the study were asked to complete the Wijma Delivery Experience
Questionnaire (W-DEQ B) that measures the experience of a woman’s delivery. The main objective of the project
was to study well-known as well as new factors associated with negative experience of childbirth among a group
of healthy primiparas.