Comparison of Combined Spinal-epidural Analgesia Versus Epidural Analgesia for Pain Management During Labor

Inclusion Criteria: * Healthy women at term (37 to 42 weeks of gestation), vertex presentation, singleton pregnancy who desired vaginal delivery were eligible to participate. Exclusion Criteria: * Contraindications to neuraxial techniques such as clinically significant coagulopathy and increased intracranial pressure, and patients with preterm labor, multiple pregnancies, non-vertex presentation, cephalopelvic disproportion and severe obstetric complications