Effect of Mannitol on Optic Nerve Sheath Diameter in Patients Undergoing Robotic Prostatectomy

Asan Medical Center

Status: Completed

Conditions: Prostate Cancer

Treatments: Drug: Mannitol

Study type: Observational

Funder types: Other

Identifiers

NCT03214055

2017-0789

Details and patient eligibility

About

We aim to evaluate the change in optic nerve sheath diameters as a surrogate of intracranial pressure before and after mannitol administration in patients who undergo robot assisted laparoscopic radical prostatectomy with pneumoperitoneum and Trendelenburg position.

Full description

Mannitol has been frequently used for renal protection during surgery. Optic nerve sheath diameter is used to evaluate intracranial pressure noninvasively. Robot-assisted laparoscopic radical prostatectomy can induce an increase in optic nerve sheath diameter due to Trendelenburg position and carbon dioxide insufflation. We therefore aim to evaluate the change in optic nerve sheath diameters before and after mannitol administration in patients who undergo robot assisted laparoscopic radical prostatectomy.

Enrollment: 39 patients

Sex: Male

Ages: 20 to 79 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• prostate cancer patients undergoing robot assisted laparoscopic radical prostatectomy.
• 20 year old or above, 79 year old or below.
• agreed to participate this study.

Exclusion criteria

• history of cerebrovascular accident.
• history of congestive heart failure.
• history of pulmonary edema.
• history of anaphylaxis to mannitol.
• conversion to open prostatectomy.
• combined with other operation.
• inability to measure optic nerve sheath diameter.