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• W2336974222 abstract "A 73-year-old woman who experienced worsening headache and fever for 2 weeks presented with left congestive orbitopathy with globally limited motility and optic neuropathy but intact trigeminal function. Her visual acuity (VA) was 20/30 OD and 20/70 OS with a 0.9 log unit relative afferent pupillary defect (RAPD) OS. Intraocular pressures (IOPs) were 16 mm Hg OD and 22 mm Hg OS. Both fundi appeared normal. Opacification of the sphenoid and right posterior ethmoid sinuses and fat stranding within the right posterior orbit were noted on computed tomography (Fig. 1A). Magnetic resonance imaging (MRI) demonstrated bilateral cavernous sinus thrombosis (CST) (Fig. 1B), bilateral superior (Fig. 1C) and left inferior ophthalmic vein thrombosis, and left transverse sinus thrombosis. Because of a penicillin and cephalosporin allergy, she was treated with intravenous vancomycin 1500 mg/12 hours for gram-positive coverage, aztreonam 2 g/8 hours for gram-negative, and clindamycin 900 mg/8 hours for anaerobic coverage. She underwent emergent sphenoidotomy and right posterior ethmoidectomy under general anaesthesia. The mean arterial blood pressure fell to 60-70 mmHg twice. The nasal mucosa was injected with 2% lidocaine with 1:80 000 epinephrine and sprayed with oxymetazoline. The IOP OS increased to 31 mm Hg. Fundoscopy revealed mild venous tortuosity and a perfused central retinal artery (CRA), but no optic disc edema OU. A left canthotomy and inferior cantholysis was performed intraoperatively. Eight hours postoperatively, the VA was no light perception (NLP) OS and 20/160 OD with moderate congestive orbitopathy and a >1.2 log unit RAPD OS. IOP was normal bilaterally. There was no optic disc edema or retinal artery occlusion. Repeat MRI demonstrated restricted diffusion within the left optic nerve (Fig. 1D, E). Sinus cultures were positive for Streptococcus anginosus. Aztreonam and clindamycin were discontinued and metranidazole 500 mg/ 8 hours was added. Methylprednisolone was administered intravenously once daily for 4 days (250, 250, 100, and 60 mg). Within hours of the first dose, the orbital congestion was reduced bilaterally, and VA improved to 20/30 OD but remained NLP OS. Low-molecular-weight heparin (LMWH) was started 36 hours postoperatively. On day 5, VA OD recovered to 20/25, with an inferonasal visual field defect, and remained NLP OS. The patient was discharged on an oral prednisone taper, 3 months of warfarin, and 10 weeks of oral moxifloxacin. Three weeks postoperatively, all orbital congestion had resolved and motility was full, but VA remained unchanged. Optic disc pallor was present bilaterally. Eighteen months after discharge, the patient remained stable. This report has adhered to the principles outlined in the Declaration of Helsinki. Before the antibiotic era, septic CST, a thrombophlebitic process caused by infection of the paranasal sinuses, was fatal. Currently, it is associated with 15% to 30% mortality.1Yarington Jr, C.T. Cavernous sinus thrombosis revisited.Proc R Soc Med. 1977; 70: 456-459PubMed Google Scholar In atypical cases of unilateral orbital pathology, expedited neuroimaging is vital for establishing the diagnosis of CST; the poor prognosis for septic CST may be due to delays in diagnosis.2Bhatia K. Jones N.S. Septic cavernous sinus thrombosis secondary to sinusitis: are anticoagulants indicated? A review of the literature.J Laryngol Otol. 2002; 116: 667-676Crossref PubMed Scopus (117) Google Scholar In those who survive, morbidity from cranial neuropathies occurs in up to 50% and optic neuropathy in approximately 17%.3Shaw R.E. Cavernous sinus thrombophlebitis: a review.Br J Surg. 1952; 40: 40-48Crossref PubMed Scopus (63) Google Scholar, 4Ebright J.R. Pace M.T. Niazi A.F. Septic thrombosis of the cavernous sinuses.Arch Intern Med. 2001; 161: 2671-2676Crossref PubMed Scopus (189) Google Scholar Visual loss in CST may result from thromboembolism of the CRA5Mehra K.S. Somani P.N. Multiple emboli in central retinal artery following cavernous sinus thrombosis.J All India Ophthalmol Soc. 1967; 15: 71-72PubMed Google Scholar or orbital compartment syndrome (OCS) causing CRA occlusion or ischemic optic neuropathy.6Gupta A. Jalali S. Bansal R.K. Grewal S.P. Anterior ischemic optic neuropathy and branch retinal artery occlusion in cavernous sinus thrombosis.J Clin Neuroophthalmol. 1990; 10: 193-196PubMed Google Scholar, 7Coutteel C. Leys A. Fossion E. Missotten L. Bilateral blindness in cavernous sinus thrombosis.Int Ophthalmol. 1991; 15: 163-171Crossref PubMed Scopus (14) Google Scholar, 8Geggel H.S. Isenberg S.J. Cavernous sinus thrombosis as a cause of unilateral blindness.Ann Ophthalmol. 1982; 14: 569-574PubMed Google Scholar, 9Friberg T.R. Sogg R.L. Ischemic optic neuropathy in cavernous sinus thrombosis.Arch Ophthalmol. 1978; 96: 453-456Crossref PubMed Scopus (25) Google Scholar, 10Chen J.S. Mukherjee P. Dillon W.P. Wintermark M. Restricted diffusion in bilateral optic nerves and retinas as an indicator of venous ischemia caused by cavernous sinus thrombophlebitis.AJNR Am J Neuroradiol. 2006; 27: 1815-1816PubMed Google Scholar A canthotomy and cantholysis OS was performed prophylactically in view of the impending OCS. The visual loss was likely caused by posterior ischemic optic neuropathy (PION), supported by an initial normal-appearing optic disc and restricted diffusion within the left optic nerve. Restricted diffusion in both optic nerves and retinas has been reported in a patient with bilateral blindness after CST.10Chen J.S. Mukherjee P. Dillon W.P. Wintermark M. Restricted diffusion in bilateral optic nerves and retinas as an indicator of venous ischemia caused by cavernous sinus thrombophlebitis.AJNR Am J Neuroradiol. 2006; 27: 1815-1816PubMed Google Scholar PION results from reduced blood flow to the posterior intraorbital optic nerve, which is supplied by multiple small collateral arteries usually arising directly from the ophthalmic artery and less often from other arteries. The rise in orbital congestion and venous pressure caused by CST and ophthalmic vein thrombosis produced reduced perfusion pressure in our patient and, hence, decreased flow within these vessels. This decreased flow was exacerbated by administration of labetolol when the mean arterial pressure rose to 150 mm Hg and by episodes of intraoperative arterial hypotension. Vasoconstriction of terminal arterioles was likely produced by intraoperative vasopressor agents,11Hayreh S.S. Posterior ischaemic optic neuropathy: clinical features, pathogenesis, and management.Eye (London). 2004; 18: 1188-1206Crossref PubMed Scopus (155) Google Scholar and topical epinephrine and oxymetazoline may have diffused from the sinonasal mucosa across the lamina papyracea, causing vasoconstriction of orbital vessels. These multiple risk factors in combination are likely to have created the ideal conditions for PION. Surgical PION tends to cause severe bilateral visual loss that is usually permanent.11Hayreh S.S. Posterior ischaemic optic neuropathy: clinical features, pathogenesis, and management.Eye (London). 2004; 18: 1188-1206Crossref PubMed Scopus (155) Google Scholar Treatment with high-dose steroid during the acute stages of nonarteritic PION may produce improvement of VA and visual fields.11Hayreh S.S. Posterior ischaemic optic neuropathy: clinical features, pathogenesis, and management.Eye (London). 2004; 18: 1188-1206Crossref PubMed Scopus (155) Google Scholar Steroid treatment may have contributed to visual recovery OD, whereas the greater orbital venous congestion OS resulted in irreversible ischemia. The role of steroids in septic CST, other than prevention of an Addisonian crisis, is unclear, however.12Solomon O.D. Moses L. Volk M. Steroid therapy in cavernous sinus thrombosis.Am J Ophthalmol. 1962; 54: 1122-1124Abstract Full Text PDF PubMed Scopus (24) Google Scholar The immunosuppressive effects of steroids are potentially harmful, but, in cases such as ours in which the infectious organism has been identified and treated with appropriate antibiotics, their anti-inflammatory properties may help reduce congestive orbitopathy and cranial neuropathy.4Ebright J.R. Pace M.T. Niazi A.F. Septic thrombosis of the cavernous sinuses.Arch Intern Med. 2001; 161: 2671-2676Crossref PubMed Scopus (189) Google Scholar, 9Friberg T.R. Sogg R.L. Ischemic optic neuropathy in cavernous sinus thrombosis.Arch Ophthalmol. 1978; 96: 453-456Crossref PubMed Scopus (25) Google Scholar, 12Solomon O.D. Moses L. Volk M. Steroid therapy in cavernous sinus thrombosis.Am J Ophthalmol. 1962; 54: 1122-1124Abstract Full Text PDF PubMed Scopus (24) Google Scholar In septic CST, antibiotics should be given for an extended period to treat sequestered bacteria within the thrombus. The S. anginosus groups, also known as Streptococcus milleri, were isolated in our patient and are a subgroup of Streptococcus viridans. Their ability to cause abscesses is unique from other pathogenic streptococci.13Gossling J. Occurrence and pathogenicity of the Streptococcus milleri group.Rev Infect Dis. 1988; 10: 257-285Crossref PubMed Scopus (243) Google Scholar We started LMWH to prevent further thrombus propagation and because heparin has antiplatelet and anti-inflammatory properties.14Page C. Heparin and related drugs: beyond anticoagulant activity.ISRN Pharmacol. 2013; 2013: 910743Crossref PubMed Google Scholar If started early, anticoagulation can improve morbidity in septic CST, rarely with hemorrhagic complications15Levine S.R. Twyman R.E. Gilman S. The role of anticoagulation in cavernous sinus thrombosis.Neurology. 1988; 38: 517-522Crossref PubMed Google Scholar if overanticoagulation is avoided.2Bhatia K. Jones N.S. Septic cavernous sinus thrombosis secondary to sinusitis: are anticoagulants indicated? A review of the literature.J Laryngol Otol. 2002; 116: 667-676Crossref PubMed Scopus (117) Google Scholar Anticoagulation should be continued until there is radiological confirmation of thrombus resolution. The authors have no proprietary or commercial interest in any materials discussed in this article." @default.
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• W2336974222 title "Bilateral septic cavernous sinus thrombosis, congestive orbitopathy, and ischemic optic neuropathy" @default.
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