Which implant site is associated with a potentially inferior shock vector?

Which implant site is associated with a potentially inferior shock vector?

• A. Left
• B. Right
• C. Anterior
• D. Posterior

Answer: (B)

The shock vector is shaped by where the defibrillator can sits relative to the heart and where the shocking coil or leads are placed. When the generator is implanted on the right chest, the current path tends to travel more toward the inferior part of the heart (toward the diaphragmatic surface and apex), creating an inferior-directed shock vector. In contrast, left-sided implants usually deliver a more anterior-oriented vector that traverses the heart differently. So the right chest implant is associated with a potentially inferior shock vector.

The shock vector is shaped by where the defibrillator can sits relative to the heart and where the shocking coil or leads are placed. When the generator is implanted on the right chest, the current path tends to travel more toward the inferior part of the heart (toward the diaphragmatic surface and apex), creating an inferior-directed shock vector. In contrast, left-sided implants usually deliver a more anterior-oriented vector that traverses the heart differently. So the right chest implant is associated with a potentially inferior shock vector.