Purpose: Cardiac resynchronization therapy (CRT) has been shown to improve left atrial function; however the effect on reverse electrical remodeling has been poorly evaluated. We hypothesized that CRT might induce reverse atrial electrical remodeling manifesting in the surface ECG as a shortening in P-wave duration.
Methods: Patients with CRT and more than 92% biventricular pacing at minimum follow-up of 1 year were included in the analysis.
Background: We present a new halo technique for head fixation of non-human primates during electrophysiological recording experiments. Our aim was to build on previous halo designs in order to create a simple low profile system that provided long-term stability.
New Method: Our design incorporates sharp skull pins that are directly threaded through a low set halo frame and are seated into implanted titanium foot plates on the skull.