niyada. prevention avoid dangerous cases : revision, massive diseases, bleeding tendency pre op. ct...
TRANSCRIPT
niyada
Prevention
• Avoid dangerous cases : revision, massive diseases, bleeding tendency
• Pre op. CT scan, CT aid ESS
• Pre op. preparation
• Intra op. observation
• Post op. care
Intra-operative observation
• Sedation, Hypotensive anesthesia
• Draping, Eye observation
• CT review
• Bulb press test
• Be careful ; Microdebrider, Over packing
• Image-guided ESS
Hemorrhage
Minor hemorrhage
• Common and require minimal intervention
• Mucosal cause
• Tendency to bleeding in long term local steriod use / Post infection
Minor hemorrhage
• Treatment – Cotton soaked with epinephrine– Packing – Local Electrocautery
Minor hemorrhage
• Prevention – Adequate prepare nasal mucosa with
vasoconstrictor– Avoid tearing mucosa– Meticulous and careful dissection – Good quality sharp or non-tearing instrument– Gently and non-traumatizing packing
Major hemorrhage
• Anterior ethmoidal artery– Usually in bony canal
but can be dehiscense– Bipolar cauterization
and packing
Major hemorrhage
• Sphenopalatine artery– Posterior septal
branch and branch to MT
– Related to the MT removal
– High pressure
Sphenopalatine artery
Major hemorrhage
• Cauterization or endoscopic ligation
Internal carotid artery injury
• Rare and high mortality
• Risk in surgery of sphenoid sinus and posterior ethmoid air cell
• ICA locate on lateral wall of sphenoid sinus• Dehiscence of the bony canal about 23 %
Management
Prevention
• Assess distance with measured probe
Prevention
• Avoid trauma to intersphenoid septum
• Sphenoidotomy should be performed inferomedial
• Not blind manipulate in sphenoid sinus
Orbital complications
Orbital complications
• Orbital hematoma
• Blindness
• Diplopia
• Nasolacrimal duct injury
• Subcutaneous emphysema
Predisposing factors
• Dehiscence of LP• Revision surgery• Distorted anatomy• Sphenoethmoidal cell (Onodi cell)• Extensive nasal polyp• General anesthesia• Bony destructive lesion
Predisposing factors
• DNS
• Concha bullosa
• Lateralized paradoxical turbinate
• Hypoplastic maxillary sinus
“ Uncinate process close to LP ”
Orbital hematoma
• Occur intra-op until post-op 10 hr.
• High potential to blindness
• Cause – Ant. ethmoidal artery injury
and retracted into orbit : sudden raise in IOP
– Vein lining the LP tearing : slow progress hematoma
Orbital hematoma
• Hematoma produce pressure on central retina artery
• Retinal ischemia persists >90 min. cause blindness
Orbital hematoma
• Symptoms & signs– Eye pain– Rapid proptosis– Ecchymosis usually at
medial first– Subconjunctival hemorrha
ge
• Symptoms & signs– VA drop or blindness– Marcus Gunn’s pupil
Orbital hematoma
• Treatment– Aim to relieve pressure on arterial supply of
optic nerve– Reverse from GA– Ophthalmologist consultation– Conservative treatment– Medical treatment – Surgical treatment
Conservative treatment
• Remove nasal packing
• Stop bleeding in the sinus
• Head elevation
• Control Blood pressure
• IOP measurement q 5-10 min.
• Orbital massage
(contraindicate in previous eye surgery)
Medical treatment
• Indicate in elevated IOP and VA drop• 20% Mannitol 0.5-1 mg/kg IV. drip in 20-30
min.– Osmotically drawing fluid out of orbital spa
ce– Early onset of action
Medical treatment
• Azetazolamide 500 mg. IV – Decrease aqueous humor production– Delayed onset of action
• Avoid Fimolol or Pilocarpine (masking pupil exam)
• Systemic steroid (controversy)– Dexamethasone 1 mg/kg then 05. mg/kg q 6 hr
Surgical treatment
• Indicate in conservative failure • Lateral canthotomy and inferior cantholysis
Surgical treatment
• Orbital decompression – External
ethmoidectomy– Endoscopic approach
• Optic nerve decompression (last choice)