<prompt> True about CSF rhinorrhea is -a Occurs due to break in cribriform plateb Contains glucosec Requires immediate surgeryd Contains less proteinacdbcdabcabd  <response>: Let us see each option SeparatelyOption a Occurs due to break in cribriform plate. This is correctOption b CSF contains glucose and option d It has less proteinsIn comparison to nasal secretions CSF contains more of glucose and less of proteins Turner 10e, p 28 hence both options b and d are correctOption c Requires immediate surgeryThis is not absolutely correct as: Early cases of post traumatic CSF rhinorrhea are managed conservatively. Only those cases where CSF rhinorrhea occurs persistentlySurgical management should be done 