Does pacemaker improve ejection fraction?

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  2. #pumped
  3. #rhythms
  4. #combination
  5. #device
  6. #ejection
  7. #protect
  8. #blood
  9. #improve
  10. #measurement
  11. #heart
  12. #being
  13. #against
  14. #fraction
  15. #normal
  16. #these
  17. #ventricle
  18. #ranges