Ocular blood flow velocities in patients with proliferative diabetic retinopathy and healthy volunteers: a prospective study.
AUTOR(ES)
Mendívil, A
RESUMO
BACKGROUND--Diabetes affects the vascular ocular circulation. Colour Doppler imaging allows for simultaneous two dimensional anatomical imaging and Doppler evaluation of blood flow velocity; with this technique ocular blood flow velocity can be evaluated in normal and diabetic patients. METHODS--A prospective study compared blood flow velocity in ocular vessels (ophthalmic artery, posterior ciliary arteries, central retinal vessels, and vortex veins) of 25 patients with proliferative diabetic retinopathy and 30 age matched normal subjects using a colour Doppler imaging unit (Toshiba Sonolayer SSA-270 A with a 5.0 MHz PLF-503 ST phased array scanning head). RESULTS--The diabetic patients had lower blood velocities than the volunteers. There were significant differences in ophthalmic artery; systolic (p < 0.01), diastolic (p < 0.001), mean velocity (p < 0.05), and central retinal artery; systolic (p < 0.001), diastolic (p < 0.001), mean velocity (p < 0.05). No significant correlations were found between age and blood velocities. CONCLUSION--Ocular blood flow velocity was decreased in diabetic patients with proliferative diabetic retinopathy.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=505126Documentos Relacionados
- Transmitral velocities measured by pulsed Doppler in healthy volunteers: effects of acute changes in blood pressure and heart rate.
- Prognosis for vision and fundus changes in patients with proliferative diabetic retinopathy.
- Pulsatile ocular blood flow: relationship with flow velocities in vessels supplying the retina and choroid
- Rubeosis of the iris and haemorrhagic glaucoma in patients with proliferative diabetic retinopathy.
- Proliferative diabetic retinopathy is associated with microalbuminuria in patients with type 2 diabetes