Показать сообщение отдельно
  #49  
Старый 13.06.2011, 18:36
Scorpy555 Scorpy555 вне форума ВРАЧ
Постоянный участник
 
Регистрация: 16.05.2010
Город: Львов
Сообщений: 392
Сказал(а) спасибо: 5
Поблагодарили 123 раз(а) за 119 сообщений
Scorpy555 этот участник имеет превосходную репутацию на форумеScorpy555 этот участник имеет превосходную репутацию на форумеScorpy555 этот участник имеет превосходную репутацию на форуме
Это про ишемическую нейропатию, скопировал из книги, переводить не стал (лень столько набирать было )
There are three angiographic features that are well studied
in NAION:
1. Peripapillary choroidal delay or choroidal dye filling delay:
Early reports on angiography in NAION emphasized
delayed filling of the disc and peripapillary choroid. However,
recent angiographic studies have revealed a generalized
choroidal filling delay only in arteritic disease. Patients
with nonarteritic disease demonstrate only a focal delay
(with filling times similar to those of controls). Hayreh
described massive choroidal nonperfusion in patients with
arteritic anterior ischemic optic neuropathy (AAION). He
suggested that such choroidal abnormalities are extremely
rare in NAION. Similarly, comparative analysis from ICGV
and FA techniques did not show a statistically significant
increase in the frequency of the peripapillary choroidal
watershed zone filling delay in NAION.
2. Leakage from the disc: FA can show hyperfluorescence
due to diffuse or focal leakage from the disc. ICGV is
unable to demonstrate optic disc leakage.
3. Disc filling defects: FA demonstrates hypofluorescent
areas encircled by hyperfluorescence. The hypofluorescence
is due to segmental optic disc ischemia. Hyperfluorescence
occurs secondary to leakage from the edematous
disc.

А это про отек диска:
The difference between normal and abnormal leakage at the
disc may be subtle. In both papilledema and optic
disc edema, the capillaries of the optic nerve are
dilated and leak fluorescein. Because the fluorescein picture
is not specific to these conditions, the diagnosis is made by
the clinical history and ophthalmoscopic findings. The angiogram
is similar in each case, demonstrating leakage associated
with swelling of the optic nerve head. In the early phases of
the angiogram, dilation of the capillaries on the optic nerve
head may be seen. In the late phases of the angiogram, the
dilated vessels leak, resulting in a fuzzy fluorescence of the
disc margin.

Комментарии к сообщению:
opto_dive одобрил(а): thanks. еще бы книгу указать.
Rameyka одобрил(а):
Ответить с цитированием