Chapter 2

LV impedance

Reading LV lead impedance: maturation, sudden jumps, vector changes, and what they say about the lead.

The cases

1LV pacing impedance climbing after implant2LV impedance out-of-range alert near battery end of life3LV impedance jump after an office visit4LV threshold and impedance rising in the first weeks after implant

From Boston Scientific CRT — clinical cases by M. Strik. Published by Cardiocases. Every numbered marker on a recording is explained in the list beneath it; tap a marker on the trace or an entry in the list.