<s>[INST] My husband had brain surgery to remove a beneign tumor.  It was a nine hour surgery.  Then nine days later he underwent another surgery to block a nasal passage that was leaking spinal fluid as a result of the first surgery.  This second surgery was a four hour surgery.  It is now five days later, and he is still very groggy and just wants to sleep most of the day.  Is this within the normalcy range.  He is 75 years old if this is a variable. [/INST] Hi,Thank you for posting your query.The recovery after surgery for brain tumor (the first surgery) and CSF leak (the second surgery) depends on multiple factors. Older age (as in your husband's case) is one of them, which delays the recovery. Recovery also depends on the location of tumor and any damage during the surgery. Occurrence of infection or electrolyte imbalance after the surgery (in the post-operative period) also delays the recovery.So, one has to be patient in the post-operative period, and take care of his diet and nutrition in addition to the medications, to ensure a rapid recovery. I hope it helps. Please get back if you require any additional information.Wishing you good health,Dr Sudhir Kumar MD (Internal Medicine), DM (Neurology)Senior Consultant NeurologistApollo Hospitals, Hyderabad, IndiaClick on this link to ask me a DIRECT QUERY:  BLOG: </s>