Question:
How does mechanical strain on the right ventricular wall during rowing at low heart rates (60–70 bpm) affect the Aveir VR’s pacing threshold or local myocardial excitability, potentially leading to transient discomfort sensations?
Part 2 — Why 60–70 bpm vs ≥80 bpm
- At 60–70 bpm: Longer diastole → increased RV EDV → larger wall strain → potential transient threshold rise & discomfort.
- At ≥80 bpm: Shorter diastole → moderated filling & strain; impedance/contact stabilize; sympathetic analgesia; off‑resonance.