His bundle parasystole: A form of A-V junctional parasystole.

@article{Lightfoot1974HisBP,
  title={His bundle parasystole: A form of A-V junctional parasystole.},
  author={P R Lightfoot},
  journal={Chest},
  year={1974},
  volume={66 6},
  pages={695-701}
}
A 69-year-old man demonstrated continuous A-V junc-tional parasystole (A V m) over a three-week observation period. The parasystolic cycle length, although constant during each recording, changed proportionately and in parallel with the sines cycle length. Carotid sines massage lengthened the cycle length. During later recordings , the parasystolic impdse became less effective and only appeared at longer coupling intervals. Para-systolic beats were slightly aberrant as compared to-V junctional… CONTINUE READING