Most authors will observe a CSF leak for 7-10 days before considering surgical repair, though this is of course controversial.
While waiting, lumbar drainage should be considered to increase the likelihood of cessation of the leak.
Some surgeons will use a lumbar drain to keep the CSF pressure low. If this is used great care must be exercised to ensure that excessive drainage of CSF does not occur inadvertently. Normally, not more than 240 ml/day should be drained. Stool softeners should be given to minimize straining. The head of the bed should be elevated.