The pneumoperitoneum during laparoscopic surgery have the potential to cause an increase of intracranial pressure (ICP). Previous studies have proposed that ultrasonographic measurements of the optic nerve sheath diameter (ONSD) correlate with signs of increased ICP. The aim of this study is to compare the effect of pnemoperitoneum on intracranial pressure and cerebral oxygenation during laparoscopic surgery according to anesthesia agents, propofol based total intravenous anesthesia (TIVA group) and desflurane anesthesia (Des group).
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Masking
SINGLE
80 patients are randomly allocated into two groups: In TIVA group, propofol based total intravenous anesthesia is used to induce and maintain anesthesia for laparoscopic cholescystectomy.
80 patients are randomly allocated into two groups : In Des group, inhalation anesthesia using desflurane is used to induce and maintain anesthesia for laparoscopic cholescystectomy.
the ultrasonographic measurement of optic nerve sheath diameter
optic nerve sheath diameter measured by ultrasonography
Time frame: baseline
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