Cesarean Section
Conditions
Brief summary
Based on the patient's heart rate variability, the analgesia nociception index (ANI) measures the activity of the autonomic nervous system and the sympathetic/parasympathetic nervous system and expresses it as a numerical value through a specific algorithm. The investigators will analyze it and see if it has the ability to predict severe hypotension following spinal anesthesia.
Interventions
OTHERanalgesia nociception index (ANI) monitoring
The ANI monitor starts lying on the bed in the waiting area before entering the operating room, and the monitoring period should be at least 15 minutes. After entering the operating room, monitoring begins again and is maintained during the operation.
Sponsors
Seoul National University Bundang Hospital
Study design
Observational model
COHORT
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
FEMALE
Age
20 Years to No maximum
Healthy volunteers
No
Inclusion criteria
* Adult pregnant women scheduled for cesarean section under spinal anesthesia
Exclusion criteria
* Emergency cesarean section * When performing general anesthesia or epidural anesthesia * Multiple pregnancies * Surgery in which massive hemorrhage and massive blood transfusion are expected due to placenta previa * Cardiac arrhythmias, congestive heart failure, ischemic heart disease, congenital heart anomalies * Cranial nervous system disease * Autonomic nervous system-related underlying diseases not related to pregnancy * Fetal malformations * Those who have an allergic skin reaction to adhesive substances such as bandages
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| The change of averaged value | 15 min, 10 min and 5 min before entering the operating room; every 5 min after entering the operating room | The change of averaged value presented in ANI monitor |
| The change of instantaneous value | 15 min, 10 min and 5 min before entering the operating room; every 5 min after entering the operating room | The change of instantaneous value presented in ANI monitor |
| Total dose of injected phenylephrine | During the anesthesia (from initiation of anesthesia until the end of anesthesia) | — |
| Total dose of injected glycopyrrolate | During the anesthesia (from initiation of anesthesia until the end of anesthesia) | — |
| The change of systolic blood pressure | Every 1 min after entering the operating room until finishing the operation | — |
Countries
South Korea
Outcome results
None listed