Surgical endoscopy
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Laparoscopic surgery involves the creation of a carbon dioxide (CO2) pneumoperitoneum to facilitate a clear surgical view, which may result in an elevated intracranial pressure (ICP). Depending on the surgical area, steep Trendelenburg positioning may be used as well, further increasing the ICP. The objective of this study was to assess the effects of laparoscopic surgery on changes in ICP assessed by ultrasonographic measurement of optic nerve sheath diameter (ONSD), which is a generally accepted simple, reliable, and non-invasive ICP measurement technique. ⋯ The current meta-analysis revealed that ICP elevation during laparoscopy could be anticipated through a significant increase in the ONSD in the early (0-30 min) and late (30-120 min) periods during CO2 pneumoperitoneum.