Table 2.

Presentation and management of electrical lead abnormality by lead manufacturer

Variable	All (n = 135)	Abbott (n = 124)	Medtronic (n = 10)	Other (n = 1)
Presentation
Electrical noise only	114 (84.4)	108	6	0
Increased threshold only	2 (1.5)	1	1	0
Electrical noise and impedance change	4 (3.0)	1	2	1
Electrical noise and increased threshold	6 (4.5)	6	0	—
Electrical noise and decreased sensing	7 (5.3)	7	0	—
Impedance change and increased threshold	1 (0.7)	1	0	—
Electrical noise, impedance change and increased threshold	1 (0.7)	0	1	—
Management
Observation	77 (57)	75 (60)	2 (20)	0
Reprogram	20 (15)	18 (14)	2 (20)	0
Revision	38 (28)	31 (25)	6 (60)	1 (100)