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Pacing Rate Increase as Cause of Syncope in a Patient with Severe Cardiomyopathy
Author(s) -
MOREIRA LUIZ FELIPE P.,
COSTA ROBERTO,
STOLF NOEDIR A.G.,
JATENE ADIB D.
Publication year - 1989
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.1540-8159.1989.tb01920.x
Subject(s) - medicine , cardiology , blood pressure , heart rate , cardiomyopathy , ventricular rate , hemodynamics , pulmonary wedge pressure , heart failure
Hemodynamic deterioration occurs with ventricular pacing rate increase in the presence of severe chagasic cardiomyopathy. Syncope and orthopnea occurred during ventricular pacemaker evaluation when the pacing rate was temporarily increased by magnet application. Cardiac output decreased by 54%, the arterial blood pressure by 38%. and the pulmonary wedge pressure increased by 54%. Such severe myocardial compromise may limit the use of rate modulated pacemakers.