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Dexamethasone or Ondansetron Combined with Metaraminol for Preventing Postoperative Hypotension After Combined Spinal-Epidural Anesthesia in Cesarean Section: A Randomized, Double-Blind, Controlled Trial

Dexamethasone or Ondansetron Combined with Metaraminol for Preventing Postoperative Hypotension After Combined Spinal-Epidural Anesthesia in Cesarean Section: A Randomized, Double-Blind, Controlled Trial

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
ChiCTR
Registry ID
ChiCTR2600117048
Enrollment
Unknown
Registered
2026-01-19
Start date
2026-01-19
Completion date
Unknown
Last updated
2026-01-27

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

Conditions

Post-spinal anesthesia hypotension

Interventions

Dexamethasone Group:Prophylactic administration of dexamethasone
Dexamethasone plus Ondansetron Group:Prophylactic administration of dexamethasone and ondansetron
Control group:Prophylactic administration of normal saline

Sponsors

The First Affiliated Hospital of Anhui Medical University
Lead Sponsor

Eligibility

Sex/Gender
Female
Age
18 Years to 45 Years

Inclusion criteria

Inclusion criteria: 1. Undergoing elective cesarean section under combined spinal-epidural anesthesia; 2. Age range: 18 - 45 years old; 3. Singleton full-term pregnancy; 4. ASA (American Society of Anesthesiologists) health status classification: II - III.

Exclusion criteria

Exclusion criteria: 1. Those with a history of chronic severe hypertension or gestational hypertension or those with poor blood pressure control; 2. Those who cannot undergo intraspinal anesthesia due to contraindications; 3. Those with abnormal fetal development; 4. Those who are known to be allergic to ephedrine, dexamethasone or ondansetron; 5. Those who refuse to participate in the study.

Design outcomes

Primary

MeasureTime frame
Incidence of Spinal Anesthesia-induced Hypotension (SAIH);

Secondary

MeasureTime frame
Frequency and total dosage of norepinephrine administration;Time interval from intrathecal injection of ropivacaine to fetal delivery;Incidence of hypotension, reactive hypertension, nausea and vomiting, and bradycardia;Changes in hemodynamic parameters (SBP, HR, CO, CI, SV, SVV, SVR);Apgar scores of neonates at 1 minute, 5 minutes, and 10 minutes;Umbilical artery blood gas analysis immediately after fetal delivery;

Countries

China

Contacts

Public ContactXu Guanghong;Chen Xixi

The First Affiliated Hospital of Anhui Medical University

xuguanghong2004@163.com+86 138 5694 9535

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: Feb 4, 2026