Labor Pain
Conditions
Interventions
Experimental group:four lateral ports, close-ended epidural catheter
Sponsors
Shanghai First Maternity and Infant Hospital
Eligibility
Sex/Gender
Female
Age
20 Years to 40 Years
Inclusion criteria
Inclusion criteria: 1. Pregnant women in natural childbirth who require labor analgesia in Shanghai No. 1 Maternal and Infant Health Hospital, primipara with a single fetus; 2. Aged 20 to 40 years; 3. ASA classification I ~ II; 4.The gestational week is 37 to 41 weeks, the regular obstetric examination during pregnancy, regular contractions, requesting epidural analgesia with 2–5 cm cervical dilation; and reporting a baseline pain score =5 on a Numerical Rating Scale (NRS), which evaluates pain from 0 to 10 (0, no pain; 10, worst imaginable pain). 5. To be informed of the methods, risks and purposes of this research, it is necessary to sign an informed consent form and voluntarily participate in this research.
Exclusion criteria
Exclusion criteria: 1. BMI>40kg/m^2; 2. Severe comorbidities or other related complications during pregnancy (ie, cardiac and brain dysfunctions, preeclampsia); 3. History of drug abuse; 4. Contraindications for spinal canal puncture; 5. conditions that increase the risk of a cesarean delivery (ie, placenta previa, history of uterine anomaly, or surgery), and known fetal abnormalities. 6. If a delivery occurred within 1 hour after epidural catheter placement.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| onset time to adequate labor analgesia ; | — |
Secondary
| Measure | Time frame |
|---|---|
| the percentage of adequate labor analgesia after first bolus;ropivacaine consumption per hour;the time to first patient controlled epidural analgesia;times of rescue epidural analgesics;the number of patient controlled epidural analgesia demand boluses;incidence of hypotension;incidence of motor block;the higest sensor level;maternal satisfactory of labor analgesia;incidence of other side effects; | — |
Countries
China
Contacts
Public ContactZang Yu
Shanghai First Maternity and Infant Hospital
Outcome results
None listed