Initial angiographic appearance of intracranial vascular occlusions in acute stroke as a predictor of outcome of thrombolysis: initial experience.
OBJECTIVE
To determine whether the initial angiographic morphology and location of intracranial arterial occlusions in acute stroke are reliable predictors of success of thrombolysis.


METHODS
Thirty-three intracranial occlusions were studied in 32 patients who underwent intraarterial thrombolysis with urokinase within 6 hours from clinical onset of stroke symptoms. The initial angiographic appearance of each occlusion was categorized as cutoff, tapered, meniscus, tram-track, or tandem. Following thrombolysis, outcomes were classified as complete, partial, or no recanalization.


RESULTS
Complete recanalization was accomplished in 17 of the 33 lesions, partial recanalization in nine, and no effect in seven. Tram-track (n = 3) and tapered (n = 7) lesions demonstrated the highest rates of at least partial recanalization (100% and 86%, respectively), whereas cutoff lesions (n = 13) demonstrated the lowest rate (69%). Intracranial hemorrhage was associated with higher doses of urokinase. Complete recanalization success rates were 60% for M1 lesions (n = 10), 43% for M2 or A2 lesions (n = 14), and 33% for M3 lesions (n = 3). Vertebrobasilar lesion (n = 5) success rates for complete and at least partial recanalization were 80% and 100%, respectively.


CONCLUSIONS
Relationships were found to exist between the success rate of recanalization and initial angiographic lesion location and morphology, which represent important trends; however, further studies with a larger sample size are needed.
Pillai
J J
JJ
Case Western Reserve University School of Medicine, University Hospitals of Cleveland, Ohio, USA. jpillai@mail.mcg.edu
Lanzieri
C F
CF
Trinidad
S B
SB
Tarr
R W
RW
Sunshine
J L
JL
Lewin
J S
JS
D000293:Adolescent; D000328:Adult; D000368:Aged; D002533:Cerebral Angiography; D006801:Humans; D008875:Middle Aged; D020521:Stroke / Q000000981:diagnostic imaging*; D015912:Thrombolytic Therapy; D016896:Treatment Outcome; D014568:Urokinase-Type Plasminogen Activator / Q000627:therapeutic use*
D014568:Urokinase-Type Plasminogen Activator