Effect of Delivery Time on Umbilical Cord Blood Gas Parameters in Cesarean Sections Under General and Spinal Anesthesia
NCT ID: NCT07321041
Last Updated: 2026-01-06
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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NOT_YET_RECRUITING
100 participants
OBSERVATIONAL
2026-01-15
2026-03-15
Brief Summary
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The main questions it aims to answer are:
Is neonatal delivery time associated with changes in umbilical artery pH values under general and spinal anesthesia? Is neonatal delivery time associated with changes in umbilical artery base excess under general and spinal anesthesia? Researchers will compare cesarean sections performed under general anesthesia with those performed under spinal anesthesia to determine whether the relationship between delivery time and umbilical cord blood gas parameters differs between anesthesia techniques.
Participants will:
Undergo elective cesarean delivery under general or spinal anesthesia as part of routine clinical care Have neonatal delivery time recorded intraoperatively Have umbilical artery blood gas parameters (pH and base excess) measured immediately after birth as part of standard neonatal assessment
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Detailed Description
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Eligible participants will include adult pregnant women with singleton term pregnancies who are scheduled for elective cesarean delivery. The choice of anesthesia technique (general or spinal anesthesia) will be determined by standard clinical indications and patient preference, independent of study participation. No modification to anesthesia management or surgical technique will be made for the purposes of the study.
Neonatal delivery time will be defined as the interval between uterine incision and complete delivery of the neonate and will be recorded intraoperatively by the surgical team. Immediately after birth, umbilical artery blood samples will be obtained as part of routine neonatal assessment, and blood gas analysis will be performed to determine pH and base excess values.
Data will be collected using standardized case report forms and hospital electronic medical records. All data will be anonymized and coded prior to analysis to ensure participant confidentiality. The primary analyses will assess the association between neonatal delivery time and umbilical artery pH and base excess within each anesthesia group. Secondary analyses will compare blood gas parameters between general and spinal anesthesia groups after controlling for delivery time.
This study is expected to provide clinically relevant information regarding the impact of delivery time on neonatal metabolic status during cesarean delivery and to contribute to optimizing coordination between obstetric and anesthesia teams.
Conditions
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Study Design
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COHORT
PROSPECTIVE
Study Groups
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General Anesthesia
This cohort includes pregnant women undergoing elective cesarean section under general anesthesia as part of routine clinical care. The anesthesia technique is selected based on standard clinical indications and patient preference, independent of study participation. No experimental intervention is applied. Neonatal delivery time and umbilical artery blood gas parameters (pH and base excess) are recorded prospectively for observational analysis.
No interventions assigned to this group
Spinal Anesthesia
This cohort includes pregnant women undergoing elective cesarean section under spinal anesthesia as part of routine clinical care. The anesthesia technique is determined according to standard clinical practice and patient preference, independent of study participation. No experimental intervention is performed. Neonatal delivery time and umbilical artery blood gas parameters (pH and base excess) are prospectively recorded for observational analysis.
No interventions assigned to this group
Eligibility Criteria
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Inclusion Criteria
\-
Exclusion Criteria
18 Years
45 Years
FEMALE
Yes
Sponsors
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Sisli Hamidiye Etfal Training and Research Hospital
OTHER
Responsible Party
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murat sahin
Medical Doctor
Locations
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Mus State Hospital
Muş, , Turkey (Türkiye)
Countries
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Central Contacts
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Facility Contacts
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References
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Kinoshita M, Sakai Y, Nakaji Y, Takahashi R, Matsumoto Y, Tanaka K. Factors influencing spinal anesthesia-to-delivery interval in elective cesarean sections: A retrospective analysis. Medicine (Baltimore). 2025 May 9;104(19):e42420. doi: 10.1097/MD.0000000000042420.
Hassanin AS, El-Shahawy HF, Hussain SH, Bahaa Eldin AM, Elhawary MM, Elbakery M, Elsafty MSE. Impact of interval between induction of spinal anesthesia to delivery on umbilical arterial cord ph of neonates delivered by elective cesarean section. BMC Pregnancy Childbirth. 2022 Mar 17;22(1):216. doi: 10.1186/s12884-022-04536-y.
Other Identifiers
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4934
Identifier Type: -
Identifier Source: org_study_id
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