Table 4.

Serious Adverse Events During the Periprocedural Period, Excluding Stroke, MI, and Death.

	Overall (n=2502)		Symptomatic (n=1321)		Asymptomatic (n=1181)
Clinical Status Procedure	CAS (n=1262)	CEA (n=1240)	CAS (n=668)	CEA (n=653)	CAS (n=594)	CEA (n=587)
Surgical wound complication
Hematoma requiring treatment	0	19	0	8	0	11
Other	3*	20	3	8	0	12
Bleeding Events†
Transfusion required	24	12	16	5	8	7
Hematoma requiring treatment	8	0	6	0	2	0
Retroperitoneal hemorrhage	4	0	4	0	0	0
Bleeding moderate	4	2	2	0	2	2
Bleeding Minor	5	1	3	0	2	1
Femoral artery complications, nonhemorrhagic	10	3	6	2	4	1
Cranial nerve palsies	4*	58	3	33	1	25
Hypotension‡	53	24	30	13	23	11
Hypertension	17	55	8	32	9	23
Bradycardia
Requiring permanent pacemaker	6	0	2	0	4	0
Atropine or no treatment	35	6	18	4	17	2

^*Three of these patients were randomized to CAS who underwent endarterectomy.

^†Categories not mutually exclusive.

^‡Systolic blood pressure ≤80 mm Hg or pressors administrated ≥24 hours.