INTRODUCTION
As the incidence of myocardial infarction is increased in modern era .
Conduction defects are one of the most common complications which occur following acute myocardial infarction (AMI), which results in
Increased mortality in these patients with Acute Myocardial infarction 1. conduction defects occur during Acute Myocardial infarction , have varied presentation. Atrio ventricular (AV) blocks associated with inferior wall infarction and bundle branch blocks are more commonly associated with anterior wall MI. Heart blocks may occur as complications of acute myocardial infarction (AMI) and are accompanied by increased in- hospital mortality.
Bradyarrhythmias and conduction disturbances are
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The main change is necrosis (death) of myocardial tissue.
The word "infarction" comes from the Latin "infarcire" meaning "to plug up or cram." It refers to the clogging of the artery.
Literature from the pre thrombolytic era have shown that intraventricular and atrio ventricular conduction defects were associated with a greater in hospital morbidity and mortality in patients with acute myocardial infarction 1-5.
The impact of thrombolytic therapy on acute myocardial infarction mortality has been widely confirmed by scientific evidence. Yet, the majority of controlled clinical studies on thrombolysis do not refer to the incidence of and mortality from atrial and interventricular conduction disturbances; few studies explicitly compare these variables between pre- and postthrombolytic therapy eras 6,7. A few literature reports have
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However, the prognosis associated with intraventricular and atrioventricular conduction disturbances has been viewed with reserve during this era of thrombolytic therapy 7,10-12.
In Brazil, information on this theme is scanty 13. Aiming at the improvement of knowledge about this issue, the present study has the objective of describing intraventricular and atrioventricular conduction disturbances in acute myocardial infarction in a public coronary unit in Rio de Janeiro in the thrombolytic era, as well as the associated in hospital mortality.
Atrioventricular (AV) blocks are more commonly associated with inferior wall infarction and bundle branch blocks are more commonly associated with anterior wall MI. Early recognition and prompt treatment will definitely reduce the mortality in AMI due to conduction blocks2.
Conduction defect is an independent prognostic factor and is an indicator of mortality in