NCT06070480

Brief Summary

The aim of this study was to investigate the effects of anaesthesia methods on intraocular pressure during lumbar disc surgery performed in the prone position.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
75

participants targeted

Target at P50-P75 for not_applicable

Timeline
Completed

Started Jan 2022

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

January 5, 2022

Completed
12 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

January 2, 2023

Completed
4 months until next milestone

Study Completion

Last participant's last visit for all outcomes

May 15, 2023

Completed
4 months until next milestone

First Submitted

Initial submission to the registry

September 18, 2023

Completed
18 days until next milestone

First Posted

Study publicly available on registry

October 6, 2023

Completed
Last Updated

October 6, 2023

Status Verified

September 1, 2023

Enrollment Period

12 months

First QC Date

September 18, 2023

Last Update Submit

September 29, 2023

Conditions

Keywords

prone positionintraocular pressurehemodynamicsanesthesia,spinalanesthesia,general

Outcome Measures

Primary Outcomes (1)

  • intraocular pressure

    Intraocular pressure was measured a total of 5 times at set time points throughout the procedures.

    Time 1:baseline supine , Time 2: 10. minute supine, Time 3: 20. minute prone , Time 4: 30. minute prone,Time 5: 10. minute after returning to the supine

Secondary Outcomes (3)

  • Mean Arterial Pressure

    Time 1:baseline supine , Time 2: 10. minute supine, Time 3: 20. minute prone , Time 4: 30. minute prone,Time 5: 10. minute after returning to the supine

  • Heart Rate

    Time 1:baseline supine , Time 2: 10. minute supine, Time 3: 20. minute prone , Time 4: 30. minute prone,Time 5: 10. minute after returning to the supine

  • End Tidal Carbon Dioxide (CO2)

    Time 1:baseline supine , Time 2: 10. minute supine, Time 3: 20. minute prone , Time 4: 30. minute prone,Time 5: 10. minute after returning to the supine

Study Arms (3)

Spinal Anesthesia Group

ACTIVE COMPARATOR

Intraocular pressure values of the patients operated with spinal anaesthesia were measured

Other: Spinal Anesthesia Group

Desflurane Group

ACTIVE COMPARATOR

Intraocular pressure values were measured in patients operated under general anaesthesia with desflurane.

Other: Desflurane Group

Propofol Group

ACTIVE COMPARATOR

Intraocular pressure values were measured in patients operated under general anaesthesia with desflurane.

Other: Propofol Group

Interventions

Effect of spinal anesthesia on intraocular pressure

Spinal Anesthesia Group

Effect of general anesthesia with desflurane on intraocular pressure

Desflurane Group

Effect of general anesthesia with propofol on intraocular pressure

Propofol Group

Eligibility Criteria

Age18 Years - 75 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • ASA 1-2 according to the American Society of Anesthesiologists (ASA) Classification.

You may not qualify if:

  • Who did not sign the informed consent form,
  • patients who required emergency surgery,
  • eye surgery recipients,
  • subjects with acute or chronic eye diseases other than refractive errors,
  • individuals detected to have elevated IOP in preoperative measurements

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Elvan Tekir Yılmaz

Giresun, Gi̇resun, 28100, Turkey (Türkiye)

Location

Related Publications (5)

  • Cunha PD, Barbosa TP, Correia G, Silva R, Cruz Oliveira N, Varanda P, Direito-Santos B. The ideal patient positioning in spine surgery: a preventive strategy. EFORT Open Rev. 2023 Feb 21;8(2):63-72. doi: 10.1530/EOR-22-0135.

    PMID: 36805330BACKGROUND
  • Kwee MM, Ho YH, Rozen WM. The prone position during surgery and its complications: a systematic review and evidence-based guidelines. Int Surg. 2015 Feb;100(2):292-303. doi: 10.9738/INTSURG-D-13-00256.1.

  • DePasse JM, Palumbo MA, Haque M, Eberson CP, Daniels AH. Complications associated with prone positioning in elective spinal surgery. World J Orthop. 2015 Apr 18;6(3):351-9. doi: 10.5312/wjo.v6.i3.351. eCollection 2015 Apr 18.

  • Pinar HU, Kasdogan ZEA, Basaran B, Coven I, Karaca O, Dogan R. The effect of spinal versus general anesthesia on intraocular pressure in lumbar disc surgery in the prone position: A randomized, controlled clinical trial. J Clin Anesth. 2018 May;46:54-58. doi: 10.1016/j.jclinane.2018.01.026. Epub 2018 Mar 26.

  • Yilmaz ET, Keles BO. Effects of propofol, desflurane, and spinal anesthesia on intraocular pressure during lumbar disc herniation surgery: a randomized controlled study. Eur Rev Med Pharmacol Sci. 2024 Feb;28(4):1407-1416. doi: 10.26355/eurrev_202402_35462.

Study Officials

  • Elvan Tekir Yılmaz, M.D.

    Giresun University

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
NONE
Purpose
DIAGNOSTIC
Intervention Model
PARALLEL
Model Details: The study included 75 patients with lumbar disc herniation between the ages of 18-75, with the American Society of Anesthesiologists (ASA) 1-2. The patients were randomly divided into 3 groups: propofol, desflurane, spinal. Intraocular pressure was measured at 5 time points throughout surgery, including baseline (T1), 10 minutes after anesthesia (T2), 10 minutes after prone positioning (T3: early prone), 30 minutes after prone positioning (T4: late prone), and 10 minutes after returning to the supine position (T5). Hemodynamic parameters were measured at these time points. Hemoglobin and hematocrit values were measured preoperatively and on the first postoperative day.
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Assistant professor

Study Record Dates

First Submitted

September 18, 2023

First Posted

October 6, 2023

Study Start

January 5, 2022

Primary Completion

January 2, 2023

Study Completion

May 15, 2023

Last Updated

October 6, 2023

Record last verified: 2023-09

Data Sharing

IPD Sharing
Will not share

Locations