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For Ophthalmology
Ultrasound Doppler testing that is non invasive exam that looks at all of the major
arteries and vessels of the Circle of Willis, this allows assessment of the patients risk for stroke & ocular stroke by measuring the blood flow in ophthalmic and cerebral arteries.
75 % percent of all strokes
occur in the Circle of Willis
Sudden weakness or numbness in the face, arm, or leg on one side of the body.
Abrupt loss of vision, strength, coordination, sensation, speech, or the ability to understand speech. These symptoms may become worse over time.
Sudden dimness of vision, especially in one eye.
Sudden loss of balance, possibly accompanied by vomiting, nausea, fever, hiccups, or trouble with swallowing.
Sudden and severe headache with no other cause followed rapidly by loss of consciousness -- indications of a stroke due to bleeding.
Brief loss of consciousness.
Unexplained dizziness or sudden falls.
Transient Ischemic attack - (Mini Stroke)
Anything that blocks blood flow to the brain. This lasts a short period of time.
Ischemic Stroke ( Blockages)-An ischemic stroke occurs when a blood clot keeps blood from flowing to your brain. The blood clot is often due to atherosclerosis, which is a buildup of fatty deposits on the inner lining of a blood vessel. 87% of strokes are Ischemic.
Hemorrhagic Stroke ( Bleeding)-When a blood vessel in your brain ruptures or breaks, spilling blood into the surrounding tissues.
Patients whose VMR reserve is exhausted may be at risk for stroke.
High-Intensity Transient Signals
Retinal Ischemic
AMD Patients
Atherosclerosis
Hypertension
Smoking / HX
Diabetes
Atherosclerosis is hardening and narrowing of arteries (stenosis).
Stenosis leads to stroke, heart attacks and many vascular issues.
High Cholesterol/High Lipids
Diabetic Retinopathy
Ocular HTN
Glaucoma
Neo-
vascularization
PI and RI in patients with AMD were significantly
higher and increased monotonically with the severity
of AMD.
Reduced Systemic Arterial Circulation affects retinal
ischemia and is associated with the increasing severity
of AMD.
Doppler Imaging demonstrates reduced or reversed
blood flow in the ophthalmic artery which directly
affects the blood supply to the choroid, retina, and
posterior ciliary arteries, thus causing chronic
ischemia to the Bruch’s membrane.
PDR patients have a significantly higher PI (pulsatility
index) and lower cerebrovascular reactivity than
NPDR patients, suggestive of a silent cerebral
microangiopathy
Patients with Proliferative Diabetic Retinopathy
demonstrate abnormal hemodynamic responses of
the cerebral and ophthalmic circulation .
Glaucoma
Recent findings suggest that patients with glaucomatous damage may have a higher risk of other cerebrovascular abnormalities. Doppler imaging has found that patients with certain types of glaucoma have increased resistance and decreased blood flow in the ophthalmic arteries and posterior communicating arteries, suggesting that changes in blood supply can correlate with optic nerve pathology.
The ophthalmic artery peak systolic velocity will be elevated in untreated patients with POAG.
Altered ocular circulation (with different patterns of presentation) appears to be
common to patients with POAG.
Reversal of the flow in the OA can often be related to high grade proximal ICA stenosis and can be very important to treat, prior to a patient having a CVA.
Decreased OA velocity measurement can often be associated chronic open angle or normal low tension glaucoma.
About 795,00 Americans each year suffer a new or recurrent stroke, that means on average a stroke occurs every 40 seconds
On Average someone dies of a stroke every four minutes.
About 40 % of stroke deaths occur in males and 60 % in females.
*Strokes are the second highest cost for treatments.*
Identifying those patients who will benefit best from a TCD.
There are two places in Ramsoft you can obtain your patients reports.
Application Based- Detailed, Advanced Report Portal
Web Based - Simple Report Portal