- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03864692
Prediction of Hypotension Using Perfusion Index and Pleth Variability Index After Spinal Anesthesia for C/S
Prediction of Hypotension Using Perfusion Index and Pleth Variability Index After Spinal Anesthesia for Caesarean Section
Spinal anesthesia for caesarean section is associated with a decrease in systemic vascular resistance and cardiac output and may cause hypotension in a significant portion of the parturients. Hypotension during delivery may cause maternal and fetal complications. If parturients who are likely to develop hypotension after spinal anesthesia can be identified before surgery, anesthesiologists would have opportunity to take measures such as prophylactic vasopressor administration.
Perfusion index (PI) measured by pulse oximetry reflects vasomotor tone which affects the degree of hypotension after spinal anesthesia. This is a non-invasive method of assessing the relative vascular tone with the use of pulse oximeter which calculates the ratio of pulsatile versus the non-pulsatile component of the blood flow. A lower PI indicates greater peripheral vasomotor tone.
Pleth variability index (PVI) is calculated using maximum and minimum values of perfusion index during respiratory cycles. PVI is one of the dynamic indices that can predict fluid responsiveness.
The aim of this study is to investigate whether the PI and PVI values at different patient positions can predict hypotension during caesarean section.
Study Overview
Status
Study Type
Enrollment (Actual)
Contacts and Locations
Study Locations
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In The USA Or Canada, Please Select...
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Kahramanmaras, In The USA Or Canada, Please Select..., Turkey, 46100
- Kahramanmaras Sutcu Imam University
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Sampling Method
Study Population
Description
Inclusion Criteria:
- singleton parturient
- planned for elective LSCS under spinal anesthesia
Exclusion Criteria:
- gestational age < 36 weeks
- emergency cases
- placenta previa, pre-eclampsia
- BMI>40
- Reynauld disease
- patient refusal
- cardiovascular disease
Study Plan
How is the study designed?
Design Details
Cohorts and Interventions
Group / Cohort |
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Hypotension group
Parturients undergoing elective C/S under spinal anesthesia whose systolic arterial pressure drop below 80 mmHg or have symptoms of hypotension such as dizziness, nausea and vomiting during the procedure.
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Normotension group
Parturients undergoing elective C/S under spinal anesthesia whose systolic arterial pressure does not drop below 80 mmHg or have any symptoms of hypotension during the procedure.
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
pleth variability index (PVI)
Time Frame: perioperative
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PVI values (%)at supine, head-up, head-down, lateral positions, before and after spinal anesthesia will be recorded and compared between the 2 groups.
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perioperative
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Perfusion index (PI)
Time Frame: perioperative
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PI values (%) at supine, head-up, head-down, lateral positions, before and after spinal anesthesia will be recorded and compared between the 2 groups.
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perioperative
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Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
heart rate
Time Frame: perioperative
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Heart rate (beat per minute) at supine, head-up, head-down and lateral positions will be recorded and compared between the 2 groups.
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perioperative
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Other Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Blood pressure
Time Frame: perioperative
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Blood pressure (mmHg) at supine, head-up, head-down and lateral positions will be recorded and compared between the 2 groups.
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perioperative
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Collaborators and Investigators
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
- KSU 2018-163
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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