Zones of atrial vulnerability. Relationships to basic cycle length.

  title={Zones of atrial vulnerability. Relationships to basic cycle length.},
  author={Howard S. Friedman and Biswajit Sinha and A Tun and Raza Pasha and Amir Sharafkhaneh and Anurag Bharadwaj},
  volume={94 6},
BACKGROUND Bradycardia is commonly found in individuals at risk for paroxysmal atrial fibrillation (AF). However, a clear relationship between lengthening of basic cyclic length (BCL) and AF has not been demonstrated. METHODS AND RESULTS In 20 open-chest dogs, atrial refractoriness, AF vulnerability, and atrial activation times (ACTs) were determined in sinus rhythm and at BCLs of 400, 300, and 200 ms, and the findings at the same coupling intervals and stimulus strengths were compared. As… CONTINUE READING

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