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The Effect of the Steep Trendelenburg Position on Intraocular Pressure

NCT06440642 · Status: COMPLETED · Type: OBSERVATIONAL · Enrollment: 50

Last updated 2024-08-09

No results posted yet for this study

Summary

A total of 50 patients aged between 18-60 years, classified as American Society of Anesthesiologists (ASA) I-II, undergoing elective total laparoscopic hysterectomy in the steep trendelenburg position (STP) will be included in the study. Preoperatively, an ophthalmologist will perform an eye examination on the patients, and intraocular pressure will be measured using a non-contact computerized tonometer (Topcon CT-800, Japan). Central corneal thickness and iridocorneal angle will be measured using a topography device (Sirius Topography, CSO, Italy), and the thickness of the retinal nerve fiber layer (RNFL) will be measured using an optical coherence tomography (OCT) device (DRI OCT Triton, Topcon, Japan). Patients' demographic data and operation durations will be recorded. Intraocular pressure (IOP) will be measured in the supine position after intubation (T1), during pneumoperitoneum (T2), in the steep Trendelenburg position (23°, head down) (T3), at the end of the operation when pneumoperitoneum is terminated (T4), after returning to the supine position (T5), and 10 minutes after returning to the supine position (T6). Simultaneously with IOP measurements, the patients' hemodynamic data (Blood pressure, heart rate, end-tidal CO2, partial saturation) will be recorded.

Conditions

  • Laparoscopic Surgery
  • Intraocular Pressure

Interventions

DEVICE

tonopen

Intraoculer pressure will be measured in the supine position after intubation (T1), during pneumoperitoneum (T2), when placed in steep trendelenburg posıtıon (T3), at the end of the operation when pneumoperitoneum is terminated (T4), after being placed back in the supine position (T5), and 10 minutes after being placed back in the supine position (T6).

Sponsors & Collaborators

  • Dr. Lutfi Kirdar Kartal Training and Research Hospital

    lead OTHER_GOV

Eligibility

Min Age
18 Years
Max Age
60 Years
Sex
FEMALE
Healthy Volunteers
No

Timeline & Regulatory

Start
2024-06-01
Primary Completion
2024-07-31
Completion
2024-07-31

Countries

  • Turkey (Türkiye)

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT06440642 on ClinicalTrials.gov