Why the study?
The Attain Stability quadripolar 4798 lead offers flexible coronary sinus positioning, but lead extraction may be challenging due to severe adhesion at the helix site.
Extraction of the Attain Stability quadripolar active fixation coronary sinus lead may be challenging due to severe adhesion at the helix site.
May complicate ASQ lead extraction in chronic HF; hypothesis-generating for improved techniques.
The efficacy of cardiac resynchronization therapy (CRT) for chronic heart failure is well established.1 The Attain Stability™ quadripolar (ASQ) 4798 lead (Medtronic plc, Dublin, Ireland) is an active fixation mechanism lead that provides flexibility in coronary sinus (CS) positioning. The side helix, which is spirally bonded to the surface of the lead, between its third and fourth poles, allows for more precise placement at any location and can be used in a wide variety of vessels. However, lead extraction may be difficult owing to severe adhesion of the helix site.
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Isonaga et al. (2023) studied this question.
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