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Recovery Rate From Category II to Category I EFM Tracings in Pregnant Women Receiving Bolus vs Continuous Intravenous Fluid Administration
Sponsor: Queen Savang Vadhana Memorial Hospital, Thailand
Summary
The goal of this clinical trial is to learn which method of intravenous fluid works better for treating abnormal fetal heart rate patterns during labour in low-risk pregnant women at term. The main question it aims to answer is: Does a rapid fluid bolus (500 mL given quickly) convert abnormal fetal heart rate tracings to normal within 30 minutes better than slow continuous infusion? Researchers will compare a 500 mL normal saline bolus followed by continuous infusion to continuous infusion alone to see which method improves fetal heart rate patterns faster. Participants will: * Be placed in the left lateral position and receive supplemental oxygen by face mask * Have oxytocin stopped if it is being given * Receive normal saline through an IV line - either as a rapid bolus or a slow continuous drip, depending on which group they are assigned to * Have fetal heart rate monitored continuously and assessed at 30, 60, and 120 minutes * Have blood pressure, heart rate, and oxygen levels checked every 15 minutes * Have two ultrasound measurements taken - one of a vein in the abdomen and one of blood flow in the umbilical cord - at the start and at 30 minutes
Official title: Recovery Rate From Category II to Category I Electronic Fetal Monitoring (EFM) Tracings in Pregnant Women Receiving Bolus vs Continuous Intravenous Fluid Administration: A Randomized Controlled Trial
Key Details
Gender
FEMALE
Age Range
20 Years - 35 Years
Study Type
INTERVENTIONAL
Enrollment
60
Start Date
2025-12-10
Completion Date
2026-03-31
Last Updated
2026-06-10
Healthy Volunteers
No
Conditions
Interventions
500 mL normal saline rapid bolus followed by remaining volume at 150 mL/hour
Participants receive 500 mL of normal saline as a rapid free-flow intravenous bolus through a 21-gauge cannula, with the IV bag positioned 110 cm above hand level. Once 500 mL is delivered, the remaining 500 mL from the same bag is continued at 150 mL/h. All infusions are continued until delivery or clinical decision to discontinue.
Locations (1)
Queen Savang Vadhana Memorial Hospital, Chon Buri, Chon Buri 20110 Recruiting
Si Racha, Changwat Chon Buri, Thailand