A rapid but complete neuro-ophthalmologic
assessment was performed, including fluorescein angiography
and hematological evaluation yielding the diagnosis
of CRAO, possibly embolic. No clinical or laboratory evidence
was suggestive of giant cell arteritis. Because
the diagnosis for this patient was obtained hyperacutely,
close to the golden window of time for thrombolysis,
cerebral angiography was performed by the interventional radiology
service at UMDNJ-NJMS with the intention of using superselective
arterial thrombolysis. At the time of angiography, carotid
arterial evaluation before advancement of the catheter revealed
no significant carotid stenosis or plaque that might increase
the risk of further embolization or prevent catheter advancement.
The patient was awake during the procedure and described a sudden
improvement in her vision in the right eye after the ninth milligram
of the continually infused TPA was
administered. The infusion was discontinued after 10,000 units
(ten milligrams).
The patient was hospitalized for 24-hour observation and short-term
heparin therapy. Immediately after the procedure, her acuity
was once again 20/400. She was initially treated with the anti-platelet
agent Clopidegrel due to her aspirin intolerance. Ultimately, a
transesophageal echocardiogram revealed left atrial and atrial appendage
stasis, felt to be a significant risk factor for subsequent (or
previous) intraventricular clot. Therefore, the patient was treated
with coumadin therapy and is scheduled for further cardiac evaluation.
|