Table 1.

Demographic, Clinical, and Outcome Data in Study Cohort

	Total (n=47)	Carotid Occlusion (n= 19)	Carotid Stenosis (n= 28)	P-value
Mean Age, [SD]	66 [10]	62 [9]	69 [10]	.02
Women, (%)	19 (40)	7 (35)	12 (41)	.68
Black, (%)	12 (25)	5 (26)	7 (25)	.92
Past Medical History
Hypertension, (%)	38 (79)	15 (79)	22 (79)	.98
Hyperlipidemia, (%)	34 (72)	15 (79)	19 (68)	.40
Coronary artery disease, (%)	7 (15)	2 (11)	5 (18)	.49
Diabetes, (%)	16 (34)	2 (11)	14 (50)	.01
Current or former smoker, (%)	34 (72)	16 (84)	18 (64)	.24
Prior stroke or transient ischemic attack, (%)	13 (28)	9 (47)	4 (14)	.01
Peripheral vascular disease, (%)	3 (6)	0	3 (11)	.14
Clinical Presentation
Ischemic stroke, (%)	39 (81)	18 (95)	21 (75)	.17
Median admission NIH stroke scale [IQR]	6 [2–12]	7 [5–12]	4 [2–13]	.44
Contralateral carotid stenosis, (%)	10 (21)	2 (11)	8 (29)	.14
Medications Prior to Admission
No anti-platelet, (%)	23 (49)	9 (47)	14 (50)	.86
Single anti-platelet, (%)	21 (45)	8 (42)	13 (46)	.77
Dual anti-platelet, (%)	3 (6)	2 (11)	1 (4)	.34
Statin therapy, (%)	26 (55)	10 (53)	16 (57)	.76
Radiographic Infarct Pattern
Any watershed infarct, (%)	22 (47)	10 (53)	12 (43)	.72
Any non-watershed infarct, (%)	24 (51)	13 (68)	11 (39)	.08
Medications at the Time of Transcranial Doppler
Single anti-platelet, (%)	37 (79)	13 (68)	24 (86)	.16
Dual anti-platelet, (%)	6 (13)	3 (16)	3 (10)	.61
Clinical Outcomes
Mean duration of hospitalization (days) [SD]	7 [4]	6 [4]	7 [4]	.12
Carotid revascularization procedure, (%)	20 (43)	1(5)*	19(68)	<.001
Recurrent cerebral ischemia at ninety days, (%)	9 (19)	4 (21)	5 (18)	.78
Death at ninety days, (%)	1 (2)	0	1 (3)	.41

^*One occlusion patient was noted to have partial vessel recanalization at 1 month and then underwent a carotid endarterectomy