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Table 3 Comparison of device parameters before and after CMR

From: Deactivation vs. asynchronous pacing - prospective evaluation of a protocol for rhythm management in patients with magnetic resonance conditional pacemakers undergoing adenosine stress cardiovascular magnetic resonance imaging

  before MR after MR P a
P-wave amplitude (mV) 2.87 ± 1.86 3.10 ± 1.70 0.32
R-wave amplitude (mV) 12.27 ± 5.32 12.05 ± 5.44 0.59
Atrial lead impedance (Ohm) 469 ± 61 468 ± 65 0.65
Ventricular lead impedance (Ohm) 601 ± 120 603 ± 118 0.57
Atrial PCT (V@0.4 ms) 0.66 ± 0.25 0.66 ± 0.20 1.0
Ventricular PCT (V@0.4 ms) 0.63 ± 0.26 0.55 ± 0.28 0.1
Battery voltage (V) 2.97 ± 0.42 2.97 ± 0.42 n.a.
  1. CMR, Cardiovascular Magnetic Resonance; PCT, pacing capture threshold, aWilcoxon signed rank test