Evaluation of the Correlation between Intracranial Pressures Measured by Schiotz Tonometer and Computed Tomography Scan Findings in Craniotomy Patients before Dura Opening

We evaluated the correlation between intracranial pressure (ICP) measured by Schiotz tonometer and computed tomography (CT) scan findings in craniotomy patients. This cross-sectional study was performed in Alzahra Hospital in Isfahan from 2010 to 2011. We included the elective craniotomy patients aged 18-64 years with the American Society of Anesthesiologists (ASA) physical status I or II. After being evaluated by CT scan، ICP was studied with Schiotz tonometer in Burr hole before dura opening. 58 patients (mean age: 44. 37 ± 11. 53 years) scheduled for elective craniotomy were included in the study. There were 36 males (62. 1%) and 22 females (37. 9%). The results showed significant correlation between ICP measured by Schiotz tonometer and by CT scan (r = 0. 913، P < 0. 001). This study showed that Schiotz tonometer could consider as a safe and reliable alternative to CT scan in ICP evaluation.