Coiling of Large and Giant Aneurysms: Complications and Long-Term Results of 334 Cases

Article Figures & Data

Table 1:

Location of treated aneurysms and respective complication and recurrence rates

Location	No. of Aneurysms (%)	Complications (%)	Recurrence (%)	Retreatment (%)
Paraclinoid	63 (18.9)	9 (14.3)	26/53 (49)	22/53 (41.5)
Basilar artery	53 (15.9)	4 (7.5)	16/43 (37.2)	15/43 (34.9)
Posterior communicating artery	48 (14.4)	6 (12.5)	11/33 (33.3)	10/33 (30.3)
Carotid ophthalmic	47 (14.1)	3 (6.4)	12/39 (30.8)	10/39 (25.6)
Anterior communicating artery	34 (10.2)	5 (14.7)	6/25 (24)	5/25 (20)
Carotid cavernous	27 (8.0)	4 (14.8)	9/21 (42.9)	6/21 (28.6)
Middle cerebral artery	25 (7.5)	2 (8)	8/16 (50)	5/16 (31.3)
Carotid terminus	17 (5.1)	0	5/11 (45.5)	4/11 (36.4)
Vertebral artery	13 (3.9)	1 (7.7)	5/12 (41.7)	5/12 (41.7)
Anterior cerebral artery	6 (1.8)	0	4/6 (66.7)	4/6 (66.7)
Posterior cerebral artery	1 (0.3)	0	0/1	0/1
Total	334	34	102	85

Table 3:

Predictors of recurrence and retreatment

	Odds Ratio	95% CI	P Value
Procedural complications
Ruptured aneurysms	2.4	1.1–4.3	.04^a
Aneurysm location	2.1	1.1–3.9	.02^a
Anterior circulation aneurysms	2.0	0.9–5.0	.09
Recurrence
Aneurysm size	1.07	1.02–1.14	.006^a
Follow-up time	1.04	1.02–1.06	<.001^a
Unassisted coiling and balloon remodeling	2	1.1–3.3	.02^a
Aneurysm location	1.9	1.1–3.4	.02^a
Retreatment
Aneurysm size	1.08	1.02–1.14	.003^a
Follow-up time	1.02	1.02–1.06	.002^a
Unassisted coiling and balloon remodeling	2.5	1.1–3.3	.005^a
Aneurysm location	2.02	1.1–3.4	.02^a
New or recurrent hemorrhage
Aneurysm size	1.1	1.0–1.2	.04^a
Follow-up time	1.03	1.0–1.1	.05^a
Aneurysm location	2.5	1.5–7	.01^a
Clinical outcome
Aneurysm size	0.89	0.82–0.97	.01^a
Hunt and Hess grades	0.36	0.24–0.55	<.001^a
New or recurrent hemorrhage	0.04	0.005–0.28	.002^a

↵a Statistically significant values. Factors tested as predictors of complications: age, sex, embolization, initial aneurysm occlusion, and date of treatment. Factors tested as predictors of recurrence, retreatment, and new or recurrent hemorrhage: age, sex, aneurysm size, location, ruptured aneurysm status, Hunt and Hess grades, type of embolization, initial aneurysm occlusion, date of treatment, procedural complications, GOS at discharge, and follow-up time. Factors tested as predictors of clinical outcome: age, sex, aneurysm size, location, ruptured aneurysm status, Hunt and Hess grades, type of embolization, initial aneurysm occlusion, date of treatment, procedural complications, GOS at discharge, follow-up time, recurrence, retreatment, and new or recurrent hemorrhage.

Table 4:

Clinical outcome of treated patients