<prompt> What is the ideal site to make a burr hole in a patient of head injury with rapidly deteriorating sensorium progressive dilatation of pupil with no localizing sign?Right temporal regionLeft temporal regionMidlineLeft parietal region  <response>: Burr hole surgery should be done by taking into consideration side of pupillary dilatation 1. One sided pupillary dilatation: Burr hole on that side 2. Both sided pupillary dilatation: Burr hole on the side of first dilated pupil side with obvious external trauma. 3. No localizing sign: Burr hole on the side of dominant hemisphere i.e left temporal. 