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      Hemorragia peripapilar em pacientes com glaucoma e sua relação com o tronco vascular retiniano Translated title: Association between optic disc hemorrhages and the position of central retinal vessels

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          Abstract

          OBJETIVOS: Avaliar a correlação entre as hemorragias peripapilares (HPPs) e a posição do tronco vascular na cabeça do nervo óptico. MÉTODOS: Retinografias de 1.830 pacientes foram revisadas. A posição do tronco vascular retiniano (TVR) foi classificada de acordo com sua localização no hemisfério superior ou inferior e sua posição relativa através da razão entre a distância entre o TVR e o ponto mais inferior do disco óptico e o diâmetro vertical do disco óptico (razão tronco/disco). Pacientes da mesma população, com glaucoma e sem HPPs foram aleatoriamente selecionados para comparação. RESULTADOS: Dos 1.830 pacientes, 46 apresentaram HPPs. Foram detectadas 53 hemorragias em 41 pacientes com glaucoma ou suspeitos de glaucoma, principalmente na região temporal inferior (47,2%). Observou-se concordância negativa entre a localização superior ou inferior do TVR e das HPPs (Kappa= -0,34). Considerando a posição relativa do TVR em relação ao diâmetro vertical do disco óptico (razão tronco/disco), encontramos melhor correlação (valores médios da razão tronco/disco: 0,450-hemorragias superiores e 0,510-hemorragias inferiores; p=0,027). No grupo com HPPs, observamos porcentagem significativamente maior de pacientes com glaucoma de pressão normal (GPN) se comparado ao grupo sem hemorragia (p=0,009). CONCLUSÃO: HPPs foram mais comuns no hemisfério oposto ao da emergência do TVR. Observamos maior prevalência de GPN nos pacientes com hemorragias que nos sem hemorragia.

          Translated abstract

          PURPOSE: To investigate the correlation between optic disc hemorrhages (ODHs) and the position of the central retinal vessel trunk (RVT) in patients with glaucoma. METHODS: Fundus photographs of 1,830 participants were reviewed. The exit position of the central retinal vessel trunk was classified as being in the superior or inferior hemisphere of the optic disc and the relative vertical position was expressed as a fraction of the disc diameter (ratio between the position of the trunk and the diameter of the disk). A group of patients from the same population, but without ODHs, was randomly selected and compared with the patients with ODHs. RESULTS: Among the 1,830 patients, 53 hemorrhages were detected in 41 patients with glaucoma or suspected glaucoma. We found an inverse relationship between the inferior/superior position of the central RVT and the inferior/superior position of the hemorrhages (Kappa= -0.34). Using the trunk/disc ratio, we found that superior ODHs correlated with inferior RVTs (trunk/disc ratio, 0.450; SD=0.070) and inferior ODHs correlated with superior RVTs (trunk/disc ratio, 0.510; SD=0.054) (p=0.027). The number of patients with normal tension glaucoma was significantly higher among patients with ODHs than among those without ODHs (p=0.009). CONCLUSION: Our patients had a negative correlation between the position of central RVT and the location of the ODHs. Normal tension glaucoma was more prevalent among patients with ODHs than among those without it.

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          Most cited references24

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          Ophthalmoscopic evaluation of the optic nerve head.

          Optic nerve diseases, such as the glaucomas, lead to changes in the intrapapillary and parapapillary region of the optic nerve head. These changes can be described by the following variables: size and shape of the optic disk; size, shape, and pallor of the neuroretinal rim; size of the optic cup in relation to the area of the disk; configuration and depth of the optic cup; ratios of cup-to-disk diameter and cup-to-disk area; position of the exit of the central retinal vessel trunk on the lamina cribrosa surface; presence and location of splinter-shaped hemorrhages; occurrence, size, configuration, and location of parapapillary chorioretinal atrophy; diffuse and/or focal decrease of the diameter of the retinal arterioles; and visibility of the retinal nerve fiber layer (RNFL). These variables can be assessed semiquantitively by ophthalmoscopy without applying sophisticated techniques. For the early detection of glaucomatous optic nerve damage in ocular hypertensive eyes before the development of visual field loss, the most important variables are neuroretinal rim shape, optic cup size in relation to optic disk size, diffusely or segmentally decreased visibility of the RNFL, occurrence of localized RNFL defects, and presence of disk hemorrhages.
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            Factors associated with optic disc hemorrhages in glaucoma.

            To evaluate factors associated with optic disc hemorrhages (ODHs) in patients with open-angle glaucoma.
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              Incidence of disc hemorrhages in open-angle glaucoma before and after trabeculectomy.

              To investigate the effects of reduction of intraocular pressure (IOP) by surgical intervention on the frequency of disc hemorrhages in eyes with primary open-angle glaucoma (POAG) and normal-tension glaucoma (NTG).
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Journal
                abo
                Arquivos Brasileiros de Oftalmologia
                Arq. Bras. Oftalmol.
                Conselho Brasileiro de Oftalmologia (São Paulo )
                1678-2925
                August 2008
                : 71
                : 4
                : 559-563
                Affiliations
                [1 ] Universidade Federal de São Paulo Brazil
                [2 ] Universidade Federal de São Paulo Brazil
                [3 ] Universidade Federal de São Paulo Brazil
                [4 ] Instituto Israelita de Ensino e Pesquisa Albert Einstein Brasil
                Article
                S0004-27492008000400017
                10.1590/S0004-27492008000400017
                9efa2e10-15b6-4891-9e3f-5519a6b9a595

                http://creativecommons.org/licenses/by/4.0/

                History
                Product

                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=0004-2749&lng=en
                Categories
                OPHTHALMOLOGY

                Ophthalmology & Optometry
                Optic nerve,Retinal hemorrhage,Retinal vessels,Glaucoma,Nervo óptico, hemorragia retiniana,Vasos retinianos

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