Significance of an additional unenhanced scan in computed tomography angiography of patients with suspected acute aortic syndrome

Table 3 Complications and secondary findings n (%)

	Total	AAD		IMH
		Stanford A	Stanford B	Stanford A	Stanford B
Subadventitial hematoma of pulmonary trunk	5 (9.1)	2 (8.3)	0	3 (42.9)	0
Pericardial effusion	20 (35.7)	11 (45.8)	4 (21.1)	5 (71.4)	0
Pleural effusion	14 (25.0)	4 (16.7)	6 (31.6)	2 (28.6)	2 (33.3)
Abdominal aortic aneurysm (AAA)	17 (32.1)	2 (8.7)	12 (66.7)	0	3 (50.0)
Bleeding/rupture	4 (7.1)	0	3 (15.8)	0	1 (16.7)
Branch vessel involvement	33 (66.0)	17 (81.0)	12 (70.6)	3 (50.0)	1 (16.7)
Ischemia	10 (18.2)	5 (20.8)	4 (22.2)	1 (14.3)	0
Kidney	7 (12.5)	4 (16.7)	3 (15.8)	0	0
Liver	2 (3.6)	1 (4.2)	1 (5.3)	0	0
Spleen	3 (5.5)	0	2 (11.1)	1 (14.3)	0
Intestine	1 (1.8)	0	1 (5.3)	0	0

Branch vessel involvement was the most frequent complication. Subadventitial hematoma involving the pulmonary trunk was present exclusively in patients with Stanford A lesions. Pericardial effusion was significantly more frequent in Stanford A lesions. AAD: Acute aortic dissection; IMH: Intramural hematoma.