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Study on patients undergoing laparoscopic surgery to see how body position and gas inflation affect brain pressure using eye ultrasound

Effect of pneumoperitoneum and Trendelenburg position on intracranial pressure assessed using transorbital ultrasonographic measurement of optic nerve sheath diameter in patients undergoing laparoscopic surgery An observational study - NIL

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
CTRI
Registry ID
CTRI/2025/09/094599
Enrollment
38
Registered
2025-09-11
Start date
Unknown
Completion date
Unknown
Last updated
2025-09-15

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Health Condition 1: G938- Other specified disorders of brain

Interventions

Intervention1: Nil: Nil

Sponsors

Department of anaesthesiology
Lead Sponsor

Eligibility

Inclusion criteria

Inclusion criteria: Age between twenty one and sixty years Both male and female patients American Society of Anesthesiologists (ASA) physical status one to three Body mass index less than thirty kilograms per square metre Scheduled for elective laparoscopic surgery with pneumoperitoneum and Trendelenburg position under general anaesthesia Glasgow coma score of fifteen

Exclusion criteria

Exclusion criteria: History of ophthalmic problems that prevent proper use of ultrasound probe Presence of optic nerve disorders such as optic neuritis or optic nerve neoplasm Previous ocular surgery Hyperthyroidism

Design outcomes

Primary

MeasureTime frame
To assess the change in intracranial pressure in patients undergoing laparoscopic surgery with combined pneumoperitoneum and Trendelenburg position under general anaesthesia, measured by transorbital ultrasonographic optic nerve sheath diameter (ONSD).Timepoint: Baseline (before pneumoperitoneum), after creation of pneumoperitoneum in Trendelenburg position, and after desufflation before extubation.—

Secondary

MeasureTime frame
Change in mean arterial pressure (MAP) and heart rate in relation to ONSD changes.Timepoint: Baseline (before pneumoperitoneum), after creation of pneumoperitoneum in Trendelenburg position, and after desufflation before extubation.—

Countries

India

Contacts

Public ContactJinan R S

Government Medical College, Kozhikode

binusajid@yahoo.com9447324632

Outcome results

None listed

Source: CTRI (via WHO ICTRP) · Data processed: Feb 4, 2026