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Unusual Demand Pacemaker Arrhythmia Due to Partial Recycling in the Relative Refractory Period
Author(s) -
BAROLD S. SERCE,
YOKOYAMA MASAYOSHI,
WADA JURO,
HIROSAVVA KOSHICHIRO
Publication year - 1979
Publication title -
pacing and clinical electrophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.686
H-Index - 101
eISSN - 1540-8159
pISSN - 0147-8389
DOI - 10.1111/j.1540-8159.1979.tb05205.x
Subject(s) - medicine , refractory period , pulse (music) , refractory (planetary science) , pulse generator , lithium (medication) , cardiology , voltage , electrical engineering , physics , astrobiology , engineering
This report pretsents the electrocardiograms of a patient with a normally functioning lithium QRS‐inhibited pulse generalor that exhibited partial recycling with imappropri‐ately short escape intervols. The occurrence of partial recycling was time‐de‐pendent rather than voltage‐dependent, and was observed only when ORS com‐plexes fell within the relative refractory period of the pulse generator. This resutled in a complex arrhythmio simulating pulse generator maafunction. This ob‐servation re‐einphasizes the need for the physician to appreciute the technical char‐acteristics of pulse generotors to avoid Ihe unnecessary replacemsnl nf norniiilly funclioning units. (PACE VoJ. 2, March‐April, 1979.)