Pacing and Sensing of Human Heart for over 31 Years with the Same Apparatus (Generator and Lead)

Figure 1

(a) “Vario” method for pacing threshold evaluation with automatically decreased consecutive steps of pacing voltage output. Spike deflection (small arrow) presents zero voltage. Backwards from that zero point, each spike presents increased voltage with steps of 0.15 V. The 5 spikes at the left of zero point with no capture represent steps of 0.15–0.75 V. Capture is succeeded by the 6th spike before zero point (large arrow), with output 0.9 V/0.5 ms (pacing threshold on May 22, 2015). (b) Magnet rate of 99 bpm on May 22, 2015 (recommended replacing magnet rate ≤ 85 bpm).

(a)

(b)