Premium
Sinus Arrest in Diaphragmatic Myocardial Infarction: Treatment of Power Failure with Atrial Pacing
Author(s) -
BURKS JOHN M.,
CALDER JOSEPH R.,
ROLAND DANIEL L.
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.tb04273.x
Subject(s) - medicine , cardiology , myocardial infarction , infarction , hemodynamics , anesthesia , diaphragmatic breathing , cardiac output , alternative medicine , pathology
Sinus arrest occurred in a patient with acute diaphragmatic myocardial infarction assacioted with right ventricular infarction. Cardiac output fell dramatically despite maintenance of a functioned rate of 72. Ventricular pacing at rate 82 and dopamine administration resulted in only slight hemodynamic improvement. Atrial pacing at rate 84 restored normal cardiac output until resumption of sinus node activity. These results suggest that atrial contraction is important for the maintenance of ventricular function in some patients with acute infarction, and may be of particular importance in the presence of right ventricular infarction. Temporary atrial or atrioventricular sequential pacing may be of great hemodynamic benefit in selected patients with conduction defects complicating myocardial infarction.