The Effect of Intravenous Prehydration on the Hemodynamic Status of Healthy Parturients Undergoing Spinal Anesthesia for Cesarean Delivery

Comparative Study of the Effect of 6% Hydroxyethyl Starch 130/0.42 vs Lactated Ringer's Preload on the Hemodynamic Status of Parturients Undergoing Spinal Anesthesia for Elective Cesarean Delivery. Arterial Pulse Contour Analysis (FloTrac/VigileoTM) is Employed for Continuous Monitoring of Maternal Hemodynamic Parameters

Status

Completed

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT01835873

Enrollment

Registered

2013-04-19

Start date

2011-03-31

Completion date

Unknown

Last updated

2013-07-15

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

Conditions

Hypotension

Brief summary

Regional anesthesia (spinal, epidural) is considered the method of choice for anesthesia obstetric deliveries because of the ability to use fewer drugs, a more direct experience of childbirth and the capability to provide excellent postoperative analgesia. However, the incidence of hypotension after spinal anesthesia for cesarean delivery is high and can lead to maternal and fetal morbidities. Certain interventions may reduce the incidence and severity of spinal anesthesia induced hypotension, including the use of vasopressors and intravenous pre- or co-hydration using different types of volume expanders; crystalloid or colloid solutions. Such interventions aim to increase maternal cardiac output, which is the key in attenuating the hypotensive response to spinal anesthesia. The primary purpose of this study is to compare the efficacy of intravenous prehydration (preloading) of healthy parturients scheduled for caesarean section with either a crystalloid (Ringer's lactated) or colloid solution (HES 130/0.42) in the prevention of hypotension after spinal anesthesia. The FloTrac/VigileoTM device provides continuous monitoring of maternal cardiac output by employment of a minimally invasive technique based on arterial pulse contour analysis. Assessment of maternal hemodynamic status using the FloTrac/VigileoTM constitutes a secondary outcome. Other secondary outcomes are total amount of vasopressors used, neonatal outcome, intraoperative side effects and maternal satisfaction scores.

Interventions

OTHERLactated Ringer's

OTHERHES 130/0.42

Balanced colloid solution

Study design

Allocation

RANDOMIZED

Intervention model

PARALLEL

Primary purpose

TREATMENT

Masking

SINGLE (Subject)

Eligibility

Sex/Gender

FEMALE

Age

18 Years to 40 Years

Healthy volunteers

Yes

Inclusion criteria

* American Society of Anesthesiologists (ASA) I and II parturients * singleton gestation * term gestation (gestational period more than 37 weeks)

Exclusion criteria

* extremes of weight (\<50 Kgr or \>120 Kgr) * extremes of height (\<150 cm or \>180 cm) * baseline heart rate less than 65 bpm * active labor * known fetal abnormalities * placental abruption, placenta previa/accreta * pregnancy induced hypertension * anemia (hemoglobin \< 9 gr/dl) * cardiac, respiratory or renal disease * diabetes mellitus * spinal cord abnormalities * previous spinal surgery * preexisting neurological dysfunction * known allergy to any protocol medication * any absolute contraindication to regional anesthesia

Design outcomes

Primary

Measure	Time frame
Incidence of spinal anesthesia induced hypotension in elective cesarean deliveries preloaded with either crystalloid or colloid solution.	Maternal hemodynamic data is assessed before volume preload, immediately after volume preload, immediately after spinal anesthesia and at one minute intervals thereafter until placental delivery. Expected average of 40 minutes.

Countries

Greece

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026