How will you manage a case of CFS rhinorrhoea? How do you heat a case of CFS rhinorrhoea that developed often nasal surgery? Write down different techniques of its repair/write down the surgical treatment of CSF rhinorrhoea. What are the recent advances in the treatment of rhinorrhoea?
repeated removal of CFS fluid via repeat lumbar taps or an
indwelling lumbar drain
controversial whether antibiotic prophylaxis should be prescribed or not.
One meta analysis by Brodie states a significant reduction in the incidence of meningitis with prophylactic therapy.
Other do not agree.
If non-operative treatment fails after 10-14 days or if the leak recurs or chronic surgical treatment is advised.
B) Surgical treatment
Operative approaches are divided into
Intracranial (for unknown site)
Multiple skull base defect(>5cm)
success rate 76-100%
method of choice
Dandy 1st documented it
site of fistula has to be localized for this
Craniotomy through the frontal/parietal/temporal region
Asses most leaked of post wall of frontal sinus
External ethmoidectomy cribriform transmastoid tegment +Petrous
transsphenoidal: sphenoid coronal/ eyebrow incision to frontal sinus using osteoplastic flap
patched with facial graft
obliterated with Fat
Retains sense of smell
Nasal mucosal Flap
Free graft of nasal mucosa
composite graft with turbinate bone, conchal or septal cartilage.
Endoscopy repair of CSF fistula
Reported 1st by wigand
CSF leak is a significant potential complication of endoscopic ethmoidectomy and immediate endoscopic repair of such leaks should be considered by any surgeon performing endoscopic nasal surgery if a CSF rhinorrhoea discovered intra-operatively.
Delayed onset of CSF leaks which are visible endoscopically are also amenable to endoscopic repair.
It is important to identify the defect accurately.The mucosa is elevate from the surrounding bone and the edges of the defect are then freshened.
The graft material is then placed into to defect as an underlay graft where possible. It is tucked in above the bonny skull base i.e the intracranial site. Fibrin glue can above used to seal the graft.(microfibrillar collagen)
Muscle or mucoperiostem(from the nasal septum) is their placed over the defect
Graft can be supported by gelfoam packing/nasal packing or BIPP. It has to be removed on 7-10 days after.
Lumbar drain to ↓ICP ,
Advise not to blow nose, sneeze with their mouth open or not to sneeze to avoid any abrupt ↑ in ICP for about 1 month.
Reason for failure
– Raised ICP
Advantages of endoscopic techniques to conventional method by Mathox and Kennedy.
Excellent field of vision, allowing exact localization of the teak.
The ability precisely to clean mucosa from the bony defect c/0 significantly increasing in the size of the defect.
Accurate positioning of the graft material over the defect.
Leakage through frontal sinus
Repair via the posterior wall of frontal sinus
Anterior osteoplastic flap using either eyebrow /coronal incision.
Remove entire sinus mucosa and fill with fat.
Leakage through cribriform/plate/ ethmoid roof.
external ethmoidectomy approach.
Remove MT for exposure
Remove all ethmoid cell
septomucosal flap used at the junction of septum and olfactory slip, give the superior incision that extend AP.
Carry it as far as anteriorly
Lower incision∼1.5cm below and parallel to superior incision connects the anterior aspect of superior and inferior incision and flap is rotated 90° to cover the defect.(Posterior based flap)
Leakage through mastoid and M/E
Pedicled sternimastoid muscle
Leakage of CSF through sphenoid sinus
Complete external ethmoidectomy. Use septal flap based on the inferior margin of the frontal face of the sphenoid sinus.