Table 2.

IAT Data and Procedures

	Thrombus Grade
	Grades 0–3	Grade 4	P Value
Symptom onset to IAT start, median, range; min	300, 66–894	300, 154–1215	0.760
Total IAT time, median, range; min	74, 22–215	113, 37–415	<0.001
Mechanical clot disruption, n/total (%)	32/61 (53)	56/74 (76)	0.005
Simple guide wire	15/32 (47)	29/56 (52)
Balloon angioplasty alone	11/32 (34)	17/56 (30)
Balloon and snare	3/32 (10)	6/56 (11)
MERCI retriever	2/32 (6)	2/56 (3)
Snare alone	1/32 (3)	1/56 (2)
Balloon and intracranial stent	0/32	1/56 (2)
IAT dosage
Reteplase units, median, range	2, 0.4–5 (n=39)	2.3, 0.6–8 (n=47)	0.074
Urokinase units, median, range	155K, 50K–1.5 million (n=16)	250K, 30K–1.9 million (n=13)	0.182
t-PA mg, mean±SD	10.7±6.8 (n=6)	14.2±6.0 (n=9)	0.313
Recanalization, n/total (%; final TICI score ≥2b)	37/61 (61)	37/74 (50)	0.216
Time to recanalization, median, range; min	72, 26–185 (n=37)	118, 37–415 (n=37)	0.001
Combination IV/IA therapy, n/total (%)	37/61 (60.7)	48/74 (64.9)	0.614

TICI indicates Thrombolysis in Cerebral Ischemia.