Follow-up strategy for early detection of delayed pseudoaneurysms in patients with blunt traumatic spleen injury: A single-center retrospective study

Table 1 Causes of trauma in 323 patients

Cause of trauma	Number of patients, n
Fall	69
Motorcycle crash	69
MVC	63
Pedestrian accident	40
Passenger injury	32
Bicycle crash	18
ETC	32

MVC: Motor vehicle crash; ETC: Et cetera.

Table 2 Characteristics of patients classified by the American Association for the Surgery of Trauma spleen injury grade and treatment methods

AAST grade	Number of patients, n	ISS, mean ± SD	NOM		Splenectomy, n (%)
			Close observation, n (%)	Angioembolization, n (%)
I	57	18.39 ± 9.96	47 (82.5)	5 (8.8)	5 (8.8)
II	114	18.80 ± 10.7	84 (73.7)	23 (20.2)	7 (6.1)
III	89	17.80 ± 10.22	25 (28.1)	59 (66.3)	5 (5.62)
IV	50	21.60 ± 8.01	4 (8)	36 (72)	11 (22)
V	13	27.23 ± 5.53	3 (23.1)	3 (23.1)	7 (53.85)

AAST: American Association for the Surgery of Trauma; ISS: Injury severity score; NOM: Nonoperative management.

Table 3 Characteristics of the 19 patients with delayed pseudoaneurysm

Age	Sex	AAST grade	ISS	Trauma cause	DPA, detection time, day
33	Female	I	33	Passenger injury	16
42	Male	I	24	Motorcycle crash	8
34	Female	II	14	MVC	10
55	Male	II	22	MVC	5
55	Female	II	4	Assault	1
58	Female	II	6	MVC	3
64	Male	II	18	Fall	2
74	Female	II	22	Passenger injury	21
13	Male	III	13	Pedestrian accident	10
18	Male	III	5	Passenger accident	6
24	Male	III	14	MVC	2
37	Male	III	4	Bicycle crash	9
46	Female	III	25	Passenger injury	1
52	Male	III	8	Motorcycle crash	1
64	Female	III	22	MVC	6
66	Male	III	9	Fall	8
27	Male	IV	43	Bicycle crash	3
46	Male	IV	29	Motorcycle crash	6
66	Male	IV	27	Pedestrian accident	1

AAST: American Association for the Surgery of Trauma; ISS: Injury severity score; DPA: Delayed pseudoaneurysm; MVC: Motor vehicle crash.

Table 4 The results of the statistical analysis

		Delayed pseudoaneurysm		P value
		None	Occurrence
Sex, n (%)	Male	207 (94.5)	12 (5.5)	0.173
	Female	62 (89.9)	7 (10.1)
AAST grade, n (%)	I	50 (96.2)	2 (3.8)	0.649
	II	101 (94.4)	6 (5.6)
	III	76 (90.5)	8 (9.5)
	IV	36 (92.3)	3 (7.7)
	V	6 (100)	0 (0)
Age, years (mean ± SD)		46.86 ± 21.51	46.00 ± 17.8	0.865
ISS (mean ± SD)		18.62 ± 10.09	18.00 ± 10.87	0.798

AAST: American Association for the Surgery of Trauma; ISS: Injury severity score.