Skip to content

Comparison of Analgesic Efficacy, Safety and Postoperative Recovery Quality Between Magnesium Sulfate and Hydromorphone for Patient-Controlled Epidural Analgesia After Cesarean Section

Comparison of Analgesic Efficacy, Safety and Postoperative Recovery Quality Between Magnesium Sulfate and Hydromorphone for Patient-Controlled Epidural Analgesia After Cesarean Section

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
ChiCTR
Registry ID
ChiCTR2600128071
Enrollment
Unknown
Registered
2026-07-14
Start date
2026-07-14
Completion date
Unknown
Last updated
2026-07-20

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

postoperative obstetric analgesia

Interventions

Magnesium sulfate group:Administer bupivacaine and magnesium sulphate (50 mg/h) via an epidural pump, diluted with normal saline to 100 ml. Monitor respiratory rate and tendon reflexes
have calcium gluconate ready to counteract hypermagnesaemia.
Magnesium sulfate combined with hydromorphone group:Epidural pump infusion of bupivacaine + magnesium sulphate (25 mg/h) + hydromorphone (5 µg/h), diluted with saline to 100 ml
Hydromorphone group:An epidural pump is used to administer bupivacaine and hydromorphone (10 µg/h), diluted with saline to 100 ml
a bedside pulse oximeter and naloxone are provided.

Sponsors

The First Affiliated Hospital of the Baotou Medical College of Inner Mongolia University of Science and Technology
Lead Sponsor

Eligibility

Sex/Gender
Female
Age
18 Years to 40 Years

Inclusion criteria

Inclusion criteria: 1.aged 18–40 years 2.ASA physical status classification I–II, singleton term pregnancy (>=37 weeks) 3.elective cesarean section under combined spinal-epidural anesthesia, no contraindications to neuraxial anesthesia or history of drug allergy, signed informed consent, and voluntary participation in the study.

Exclusion criteria

Exclusion criteria: 1.Abnormal magnesium metabolism (e.g., renal insufficiency, abnormal serum magnesium levels); 2.history of opioid allergy; 3.long-term use of opioids or sedatives;

Design outcomes

Primary

MeasureTime frame
Patient satisfaction;Time of first press of the analgesic pump and total number of presses;Visual Analogue Scale (VAS) scores;Time to first need for additional analgesia (minutes);Time of first ambulation (hours post-operative);Sensation, recovery time from motor block;Twenty-four hours after surgery, the QoR-40 Postoperative Recovery Quality Scale was used to comprehensively assess physiological function, emotional state and other factors;Incidence of vomiting;

Secondary

MeasureTime frame
Incidence of adverse reactions;

Countries

China

Contacts

Public ContactGao Manhai

The First Affiliated Hospital of the Baotou Medical College of Inner Mongolia University of Science and Technology

gaomanhaimazuike@163.com+86 10 12345678

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: Jul 23, 2026