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Clinical trial

Comparison of Different 6% Hydroxyethyl Starch (130/0.4) Coload Volumes on the 90% Effective Dose of Norepinephrine Infusion Prophylaxis for Hypotension During Spinal Anesthesia for Cesarean Section

ID
Name
Yi Chen-2023-1
Description
The purpose of this study is to investigate the effect of different 6% hydroxyethyl starch (130/0.4) coload volumes on the 90% effective dose of norepinephrine infusion prophylaxis for hypotension during spinal anesthesia for cesarean section.
Trial arms
Trial start
2023-10-20
Estimated PCD
2024-01-23
Trial end
2024-01-23
Status
Completed
Treatment
Hydroxyethyl starch coload - 0 ml/kg
No fluid coload was given. An initial infusion dose of prophylactic norepinephrine (0.025 ug/kg/min) simultaneous with spinal anesthesia. The dose administered to subsequent patients varied by increments or decrements of 0.005 ug/kg/min of prophylactic norepinephrine according to the responses of previous patients according to the up-down sequential allocation.
Arms:
0 ml/kg Hydroxyethyl starch coload group
Other names:
Colloid
Hydroxyethyl starch coload - 5 ml/kg
5 ml/kg 6% Hydroxyethyl starch (130/0.4) coload combined with an initial infusion dose of prophylactic norepinephrine (0.025 ug/kg/min) simultaneous with spinal anesthesia. The dose administered to subsequent patients varied by increments or decrements of 0.005 ug/kg/min of prophylactic norepinephrine according to the responses of previous patients according to the up-down sequential allocation.
Arms:
5 ml/kg Hydroxyethyl starch coload group
Other names:
Colloid
Hydroxyethyl starch coload - 10 ml/kg
10 ml/kg 6% Hydroxyethyl starch (130/0.4) coload combined with an initial infusion dose of prophylactic norepinephrine (0.025 ug/kg/min) simultaneous with spinal anesthesia. The dose administered to subsequent patients varied by increments or decrements of 0.005 ug/kg/min of prophylactic norepinephrine according to the responses of previous patients according to the up-down sequential allocation.
Arms:
10 ml/kg Hydroxyethyl starch coload group
Other names:
Colloid
Size
90
Primary endpoint
ED 50
1-15 minutes after spinal anesthesia
ED 90
1-15 minutes after spinal anesthesia
Eligibility criteria
Inclusion Criteria: * 18-45 years * Primipara or multipara * Singleton pregnancy ≥37 weeks * American Society of Anesthesiologists physical status classification I to II * Scheduled for cesarean section under spinal anesthesia Exclusion Criteria: * Body height \< 150 cm * Body weight \> 100 kg or body mass index (BMI) ≥ 40 kg/m2 * Eclampsia or chronic hypertension or baseline blood pressure ≥180 mmHg * Hemoglobin \< 7g/dl * Fetal distress, or known fetal developmental anomaly
Protocol
{'studyType': 'INTERVENTIONAL', 'phases': ['NA'], 'designInfo': {'allocation': 'RANDOMIZED', 'interventionModel': 'PARALLEL', 'primaryPurpose': 'TREATMENT', 'maskingInfo': {'masking': 'DOUBLE', 'whoMasked': ['PARTICIPANT', 'INVESTIGATOR']}}, 'enrollmentInfo': {'count': 90, 'type': 'ACTUAL'}}
Updated at
2024-02-02

1 organization

2 products

1 indication

Organization
General Hospital of Ningxia Medical University
Product
Hydroxyethyl starch coload
Indication
Adverse Effect
Product
Hydroxyethyl starch