Study population
A total of 80 patients treated by caesarean section between March 2018 and August 2019 at the Centre Hospitalier Universitaire Tivoli were initially selected. The first and last patient were respectively included on the 25th of April 2018 and the 2nd of August 2019. Elective as well as non-elective caesarean deliveries were included in this study. Other inclusion criteria were: gestation of more than 34 weeks, American Society of Anaesthesiology (ASA) I or II and ≥ age 18 years. Exclusion criteria were allergies to analgesics, ASA III or higher, pre- or eclampsia, diabetes mellitus type I or II, postpartum haemorrhage (defined as ≥ 1 L blood loss), BMI ≥ 35, preoperative opioid consumption/abuse, psychiatric disorders, patient refusal to participate and language barrier. All patients signed an informed consent during prenatal consultation. Recruitment was performed by the gynaecologist in charge of the patient in the delivery room.