Intracranial Pressure
Conditions
Keywords
optic nerve sheath pressure, noninvasive intracranial pressure measurement, epidural anesthesia, cesarean
Brief summary
Depending on the physiology of pregnancy, the risk of increased aspiration, difficult airway, increased oxygen consumption and reduced functional residual capacity, breathing problems make general anesthesia application risky. In obstetric operations, neuraxial anesthesia is preferred because of both maternal and maternal mortality and morbidity. Epidural area has decreased due to pregnancy physiology. Previous studies have shown that the blood given to the epidural area increases the intracranial pressure by compressing the dura mater.Optic nerve diameter measurements ultrasound guided is a non-invasive and reliable method for detecting intracranial pressure increase. In this study, aimed to compare the optic nerve sheath diameter before and after epidural anesthesia with USG.
Detailed description
Epidural anesthesia will be performed at L2 level and sitting position in all patients. Patients will be measured and recorded for optic nerve sheath diameter at 15 min (T2), 30 min (T3) and 60 min (T4) immediately after epidural anesthesia (T0) and after epidural anesthesia.. Measurement of the optic nerve sheath diameter will be done with the help of a linear probe without applying high pressure to the eyeball while the patient is in supine position and the eyelids are closed. The optic nerve sheath diameter will be measured 3 mm beyond the optical disc. The measurements shall be applied in both transverse and sagittal planes for both eyes and the arithmetic mean of the four measured values.
Interventions
PROCEDUREUSG guided ONSD measurement preepidural
Measurement of the diameter of the optic nerve sheath preepidural and postepidural anesthesia
Sponsors
Abant Izzet Baysal University
Study design
Allocation
NON_RANDOMIZED
Intervention model
SEQUENTIAL
Primary purpose
OTHER
Masking
NONE
Eligibility
Sex/Gender
FEMALE
Age
18 Years to 40 Years
Healthy volunteers
Yes
Inclusion criteria
* epidural anesthesia patients * 18-40 years patients * American Society of Anesthesiologists status I-II patients
Exclusion criteria
* Patients with allergy to any of the drugs to be used in the study, * patients with severe heart failure, * atrial and ventricular arrhythmias, * severe valve disease, * electrolyte disorder, * renal failure, preeclampsia, eclampsia
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| increase in the diameter of the optic nerve sheath after epidural anesthesia | Basal(T0),Immediately after administration of epidural anesthesia(T1), after epidural anesthesia 15 min(T2), 30 min (T3),60 min (T4) | increase of intracranial pressure as a result of the administration of 20 ml of local anesthetic to the epidural area and its reflection on the diameter of the optic nerve sheath |
Contacts
Backup Contactmurat bilgi, MD
Primary Contactmurat bilgi, MD
Outcome results
None listed