title: Cardiac resynchronization therapy: how far is too far?
authors.forename: Matthew
authors.initials: M
authors.lastname: Ortman
authors.forename: Daniel R
authors.initials: DR
authors.lastname: Frisch
mesh_terms: D000367:Age Factors; D002304:Cardiac Pacing, Artificial / Q000009:adverse effects* / Q000706:statistics & numerical data; D004567:Electrodes, Implanted / Q000009:adverse effects / Q000706:statistics & numerical data; D006333:Heart Failure / Q000401:mortality / Q000628:therapy*; D006352:Heart Ventricles; D006801:Humans; D008404:Massachusetts; D010138:Pacemaker, Artificial / Q000009:adverse effects* / Q000706:statistics & numerical data; D016896:Treatment Outcome