title: [Use of the temporary pacemaker in acute myocardial infarct].
abstract: 80 patients with acute myocardial infarction were analyzed in our coronary heart unit in whom the use of a transient pacemaker was indicated. The over all mortality was 33.75%, three fold the general myocardial infarction mortality in the CCU of the INCICH which is 12%, and increased to 51.35% in those with complete AV block. The mortality rate was even more significative with the association of RBBB and first degree AV block (80%). Cardiac failure was a fatal complication in 94% of that group of patients, and it increased to 100% in those with cardiogenic shock. Except those who progressed to complete AV block, there was not mortality in the patients with 2nd degree AV block. In the last mentioned group, predominated the posterior infarction with extension to the right ventricle and none had severe heart failure. The mortality rate was low in patients with recent LBBB or in those with RBBB associated to left branch hemiblock, but the majority had the disturbance permanently. In 7.5% of the patients implantation of a permanent pacemaker was necessary. In half of them due to the presence of a 3rd degree AV block of more than one moth duration. We conclude that the insertion of a temporary pacemaker in our cases had no major complications and the 12 accepted indications for this still hold on.
mesh_terms: D000328:Adult; D000368:Aged; D002304:Cardiac Pacing, Artificial; D005260:Female; D006327:Heart Block / Q000209:etiology / Q000401:mortality / Q000628:therapy*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000150:complications* / Q000401:mortality; D012189:Retrospective Studies
vernacular_title: Uso de marcapaso transitorio en el infarto agudo del miocardio.