Recent myocardial infarction. Study of sinus function
Blanc, J.J.; Lamotte, A.; Boschat, J.; Gestin, E.; Guillerm, D.; Penther, P.
Archives des Maladies du Coeur et des Vaisseaux 73(2): 147-152
1980
ISSN/ISBN: 0003-9683 PMID: 6769405 Document Number: 154695
The ECGs of 70 consecutive patients hospitalised for a first transmural myocardial infarction (MI) (28 anterior, 42 posterior) were analysed prospectively and systematically during the acute phase. Endocavitary electrophysiological studies (EEP) were performed on the 21st day. The following conclusions were drawn: --Sinus bradycardia in the acute phase was observed in 18 cases (26 p. 100). Its cause is uncertain and its occurrence has no relation to the site of infarction. The single case of sinoatrial block (SAB) was recorded in a patient with a posterior MI. --EEP were normal in 18 patients who had sinus bradycardia during the acute phase; EEP was clearly pathological in the case with SAB. --There was no statistical difference in the incidence of pathological EEPs (p greater than 0,05) in anterior (4 out of 28 patients) and posterior (5 out of 42 patients) MI.