- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03555799
Evaluation of Changes of Venous Return After Spinal and Epidural Analgesia and Anesthesia by Ultrasound Guided Vena Cava Diameter Measurement
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
After approval by the Institutional Review Board and patient consent, term pregnant patients (>37 week gestation) admitted to the obstetric service of Augusta University Medical Center, who require administration of neuraxial analgesia for labor or regional anesthesia for cesarean section, will be included in the study. The consent will be obtained by the attending, resident or medical student in which the investigators will explain to the patient the procedure, benefit, risk, cost and, confidentiality. The investigators plan to get the consent immediately after the patient arrived at the unit to avoid any interference with the delivery process. If the patient needs to go to an emergency cesarean section. This patient is not going to be included in the study. Demographic variables (age, BMI, Gravity, parity and gestation weeks) and hemodynamic variables (MAP and HR) will be recorded. All patients will be lying in supine position, breathing spontaneously. The ultrasound examination will be performed before commencement of the neuraxial procedure and will be repeated two minutes after administration of the neuraxial anesthetic. Ultrasound measurements will be made with a Sonosite Edge (Sonosite Inc. USA) machine and a C60X curved linear phased array transducer (Sonosite Inc.) set to abdominal mode. All measurements will be made by two attending anesthesiologists (ERP and AR) who have experience in transthoracic echocardiography, and a resident who receives the basic instruction to measure IVC diameter. The medical student will be present during the procedure and will ensure that the study echocardiographic views are taken.
The IVC will be visualized using a paramedian long-axis view via a subcostal approach according to guidelines of the American Society of Echocardiography. A two-dimensional image of the IVC will be obtained and pulsed wave Doppler will be used to differentiate from the aorta. Variations in IVC diameters will be assessed with M-mode applied 2 cm. distal to the right atrium. To ensure consistent measurements, each operator will take three images. The best quality images are chosen. Maximum and minimum IVC diameters during a single respiratory cycle will be measured.
Study Type
Enrollment (Actual)
Contacts and Locations
Study Locations
-
-
Georgia
-
Augusta, Georgia, United States, 30912
- Augusta University
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Sampling Method
Study Population
Description
Inclusion Criteria:
- Pregnant patients >37 weeks of gestation
- Indication for neuraxial labor analgesia or regional anesthesia for cesarean section
- Age older than 18 years
- Pregnancy without diagnosed comorbidities
Exclusion criteria:
- Unwillingness to participate in the study
- Diagnosis of Hypertensive disorders of pregnancy
- Diagnosis of cardiopulmonary disease
- Allergy to US gel
Study Plan
How is the study designed?
Design Details
Cohorts and Interventions
Group / Cohort |
Intervention / Treatment |
---|---|
Labor analgesia patients
Patients with clinical indication of labor epidural will have IVC diameter measurement with ultrasound before and after the epidural placement
|
Abdominal ultrasound to identify IVC between hepatic veins and right atrium.
Measurement of dimensions throughout respiratory cycle (before and after labor epidural)
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
IVC diameter
Time Frame: 10 minutes
|
IVC diameter in centimeters during respiratory cycle
|
10 minutes
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Mean arterial pressure
Time Frame: 30 minutes
|
Mean arterial pressure
|
30 minutes
|
Nausea
Time Frame: 30 minutes
|
Nausea
|
30 minutes
|
Collaborators and Investigators
Sponsor
Study record dates
Study Major Dates
Study Start (ACTUAL)
Primary Completion (ACTUAL)
Study Completion (ACTUAL)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (ACTUAL)
Study Record Updates
Last Update Posted (ACTUAL)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- 1194575
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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