Table 3 Electrical parameters for single-brand and mixed-brand combinations of generator-lead.

From: Magnetic resonance-conditional cardiac implantable electronic devices: an Italian perspective on the prevalence of mixed-brand systems over time

Parameter

Single-brand atrial lead

(n = 3899, 3105, 3411)

Mixed-brand atrial lead

(n = 74, 65, 69)

P-value

Atrial sensing amplitude (mV)

3.1 (2.0-4.7)

3.3 (2.3–4.6)

0.87

Atrial pacing threshold (V) @0.4 ms

0.7 (0.5-1.0)

0.5 (0.4–0.8)

< 0.001

Atrial pacing impedance (Ω)

600 (527–700)

505 (448–612)

< 0.001

 

Single-brand RV lead

(n = 4892, 4925, 4994)

Mixed-brand RV lead

(n = 76, 78, 81)

P-value

RV sensing amplitude (mV)

12.4 (9.0–18.0)

12.0 (8.2–15.3)

0.16

RV pacing threshold (V) @0.4 ms

0.6 (0.4–0.7)

0.65 (0.4-1.0)

0.11

RV pacing impedance (Ω)

618 (538–721)

585 (488–760)

0.28

 

Single-brand LV lead

(n = 1639, 1674, 1739)

Mixed-brand LV lead

(n = 97,95,105)

P-value

LV sensing amplitude (mV)

13.6 (9.6–20.0)

12.8 (7.6–18.6)

0.043

LV pacing threshold (V) @0.4 ms

1.1 (0.8–1.6)

1.0 (0.8–1.7)

0.38

LV pacing impedance (Ω)

696 (559–870)

678 (492–810)

0.036

  1. Data are median (interquartile range). The number of data points is indicated as n=, for sensing amplitude, pacing threshold, and pacing impedance, respectively.
  2. RV, right ventricular; LV, left ventricular.
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