RESUMO
Complex ultrasound examination was performed in 108 children with unilateral congenital cataract (UCC) and persisting hyperplastic primary vitreous syndrome (PHPVS) to reveal indications and contraindications for surgery. The presence of functioning vessels with linear blood flow velocity (LBFV) measurement was performed in fibrovascular band and retrolenticular membrane (RLM) in different stages of PHPVS using color Doppler and energetic mapping. The echographic density of fibrovascular band and RLM was estimated using echodensitometry. The results of the study showed correlation of PHPVS severity and fibrovascular band diameter, LBFV in the vessels of the band and echographic density of the band, RLM and their thickness as well.
Assuntos
Catarata/diagnóstico por imagem , Microftalmia/diagnóstico por imagem , Vítreo Primário Hiperplásico Persistente/diagnóstico por imagem , Hemorragia Pós-Operatória/diagnóstico por imagem , Ultrassonografia Doppler em Cores , Corpo Vítreo/diagnóstico por imagem , Adolescente , Velocidade do Fluxo Sanguíneo , Catarata/complicações , Catarata/patologia , Catarata/terapia , Extração de Catarata/efeitos adversos , Criança , Pré-Escolar , Contraindicações , Humanos , Lactente , Microftalmia/complicações , Microftalmia/patologia , Vítreo Primário Hiperplásico Persistente/complicações , Vítreo Primário Hiperplásico Persistente/patologia , Vítreo Primário Hiperplásico Persistente/cirurgia , Hemorragia Pós-Operatória/prevenção & controle , Fluxo Sanguíneo Regional , Índice de Gravidade de Doença , Vitrectomia/efeitos adversos , Corpo Vítreo/irrigação sanguínea , Corpo Vítreo/patologiaRESUMO
In children with persistent hyperplastic primary vitreous body (PHPVB) concurrent with unilateral congenial cataracts (UCC), combined ultrasound study used to examine blood supply to and hemodynamics of the hyaloid system--a fibrovascular band. To determine the prognosis of a surgical intervention in the mode of color and energy Doppler mapping in the persistent band, retrolenticular membrane, the authors studied whether they had functioning vessels and linear blood flow velocity in different degrees of PHPVB. Based on the results of combined ultrasound study, the authors defined indications for and contraindications to surgical treatment of UCC concurrent with PHPVB in order to prevent hemorrhagic complications (hyphema, hemophthalmos, hyaloid vascular bleeding), as well as the optimal time of surgical treatment.
