| 摘要 |
<p>A PMT is detected by calculating the correlations for typically 2 to 6 heartcycles between e.g. the PP-intervals (T3) and the pacemaker generated, predictably varied, AV-delays (D2). The correlation is low when no PMT is on, as a possible variation in PP (spontaneous atrial beats) is independent of the variation in AV-delay. Should a PMT be present the correlation is high, as the PP-interval then equals the PMT cycle time, viz. AV-delay plus retrograde conduction time in the heart tissue.</p> |
