Table 6:

Summary of previous Pipeline series in comparison with this series

Series	No. of Patients/AA	No of AA W Previous TX Failure^{^a} (%)	No of AA Treated W Adjunctive Coiling^{^b} (%)	Morbidity^{^c} and Mortality	Complete Occlusion at 6-Month DSA (%)	Control Angiography (%)	Retx No of AA (%)	Peri-Post-Operative Intracranial Bleeding	Perforator Infarct	In-Stent Stenosis All %/Requiring TX % PAO
Lylyk et al 2009^{20,^d}	53/63	23/63	4/63 (6%)	0	93%	100%	0	0	0	10%/0
		(37%)		0%						PAO: 0
Szikora et al 2010²¹,^{^e}	18/19	1/19	10/19 (53%)	5.6%	94.4%	94.7%	0	1/18^{^f}	0	0
		(5.3%)		5.6%				5.6%		PAO:5.6%
Nelson et al 2011²³	31/31	12/31	16/31 (52%)	6.5%	93.3%	96.8%	0	1/31^{^g}	1/31	0
		(38.7%)		0%				3.2%	(3.2%)	PAO:0
Fischer et al 2011²⁴	88/101	30/101)	3/101 (3%)	4%	52%	89%	8/101	4/88^{^h}	0	2.3%/0
		(29.7%)		2%			7.9%	4.6%		PAO:2.3%
McAuliffe et al 2012³⁴	54/57	16/57	12/68 (18%)	0	85.7%	98.2%	2/57^ⁱ	0	0	3.5%/0
		(28.1%)		0%			3.5%			PAO:0
Saatci et al 2012	191/251	34/251	11/251 (4%)	1%	91.2 %	95.2 %	8/251	3/191^{^j}	1/191	4.2%/1.6%
		(13.5%)		0.5%			3.2%	1.6%	0.5%	PAO:0

Note:—AA indicates aneurysms; TX, treatment; W, with DSA; Retx retreatment.
↵a Refers to the aneurysms that underwent previous endovascular or surgical treatment, including the failed treatment, incomplete treatment, and recurrences.
↵b Refers to the aneurysms in which coiling was performed as an adjunctive treatment in the same session with PED placement.
↵c Temporary deficits not included.
↵d,e Six (d) and 9 (e) aneurysms of these series were also included in the PITA trial.
↵f Refers to the rupture of a coexisting aneurysm.
↵g Refers to an iatrogenic ICA rupture.
↵h Includes 1 aneurysm rupture and 3 parenchymal hemorrhages.
↵i Additional treatment required due to PED displacement in 2 aneurysms.
↵j Includes 1 aneurysm rupture and 2 parenchymal hemorrhages.