Intracranial Pressure, Intraocular Pressure, Pneumoperitoneum
Conditions
Keywords
Intraocular pressure, Optic nerve sheath diameter, Pneumoperitoneum, Laparoscopy, Laparoscopic surgery
Brief summary
Pneumoperitoneum created during laparoscopic surgeries has some effects on human physiology. Increased intraabdominal pressure results in increased intrathoracic pressure, and eventually may result in increased intracranial and intraocular pressures. In this study we aimed to identify intraocular and intracranial pressure changes during the perioperative period due to the pneumoperitoneum created for laparoscopic cholecystectomy surgeries. Intraocular pressure will be measured directly from the eye. Intracranial pressure will be estimated by measuring optic nerve sheath diameter changes ultrasonographically.
Interventions
DIAGNOSTIC_TESTIntraocular pressure measurement via ocular tonometry
Intraocular pressure and optic nerve sheath diameter changes of the patients undergoing laparoscopic cholecystectomy will be measured throughout the surgery at different times using ocular tonometry and ultrasound, respectively.
Sponsors
Marmara University
Study design
Observational model
OTHER
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
18 Years to 65 Years
Healthy volunteers
No
Inclusion criteria
* Patients undergoing laparoscopic cholecystectomy * American Society of Anesthesiologists (ASA) 1 or 2 physical status patients * Elective surgeries
Exclusion criteria
* Patients with glaucoma * ASA 3 or above patients * Emergency surgeries
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Intraocular pressure | Throughout the operation (usually about 1 hour). | The normal physiological value for intraocular pressure is 10-20 mm Hg. It is affected by pneumoperitoneum created for laparoscopy. The pressure will be measured via ocular tonometry through the eye during the surgery at predetermined time intervals. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Intracranial pressure | Throughout the operation (usually about 1 hour). | The normal physiological value for intracranial pressure is below 10 mm Hg. It is affected by pneumoperitoneum created for laparoscopy. The pressure will be estimated through changes in the optic nerve sheath diameter which will be measured by ultrasonography through the eye during the surgery at predetermined time intervals. |
Outcome results
None listed