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A Factorial Design-Based Study on the Effect of Phenylephrine Combined with Left-Tilt Wedge Positioning in Preventing Hypotension After Spinal Anesthesia for Cesarean Delivery

A Factorial Design-Based Study on the Effect of Phenylephrine Combined with Left-Tilt Wedge Positioning in Preventing Hypotension After Spinal Anesthesia for Cesarean Delivery

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
ChiCTR
Registry ID
ChiCTR2600117335
Enrollment
Unknown
Registered
2026-01-22
Start date
2026-02-01
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

Spinal Anaesthesia-induced Hypotension

Interventions

Phenylephrine group:The parturient received a continuous intravenous infusion of phenylephrine at a rate of 0.5 µg/(kg·min) immediately following spinal anesthesia, which was discontinued upon deliver
Left lateral wedge position pad group:Following the administration of spinal anesthesia, a left lateral tilt wedge positioning pad was placed under the right lumbar/buttock region of the parturient an
Phenylephrine combined with left lateral wedge position pad group:Following the administration of spinal anesthesia, the parturient received a continuous intravenous infusion of phenylephrine at 0.5 µ
Blank control group:Following spinal anesthesia, the parturient was placed in a supine position without any prophylactic intervention. Standard maternal vital signs were monitored continuously. If spi

Sponsors

Women’s Hospital of Nanjing Medical University, Nanjing Women and Children’s Healthcare Hospital
Lead Sponsor

Eligibility

Sex/Gender
Female
Age
20 Years to 45 Years

Inclusion criteria

Inclusion criteria: 1. Singleton term pregnancy scheduled for elective cesarean delivery, with maternal age ranging from 20 to 45 years. 2. Absence of contraindications to neuraxial anesthesia.

Exclusion criteria

Exclusion criteria: 1.Gestational age 170 cm, or body weight 90 kg. 4.Patient or family member declines to participate in the study.

Design outcomes

Primary

MeasureTime frame
The incidence of hypotension from anesthesia induction to fetal delivery;

Secondary

MeasureTime frame
Other maternal observation indicators: heart rate, fluid intake, blood loss, urine output, and incidence of adverse reactions (including nausea, vomiting, dizziness, etc.).;Maternal baseline characteristics: body mass index (BMI), age, gestational week and parity, preoperative blood pressure (BP) and heart rate (HR) baseline, preoperative fasting duration, etc.;Newborn observation indicators: birth weight, 1-minute and 5-minute Apgar scores, umbilical artery blood parameters (blood gas analysis including pH, PO2, PCO2, base excess, and lactate levels), and rate of neonatal transfer to the NICU.;

Countries

China

Contacts

Public ContactYuan Hongmei

Women’s Hospital of Nanjing Medical University, Nanjing Women and Children’s Healthcare Hospital

yuanhm667@126.com+86 138 5148 9532

Outcome results

None listed

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