Segurança e exeqüibilidade do ecocardiograma sob estresse com dobutamina e atropina em pacientes octogenários

Abstract

In the present study, octogenarians achieved maximum heart rate more frequently despite the lesser amount of atropine that they required for DASE completion. Moreover, in this elderly population, there was a higher correlation between positive DASE and absence of chest pain. Although octogenarians did present more heart rhythm disturbs, they usually resolved spontaneously. In our study, DASE proved to be feasible and safe in octogenarians.

Artéria torácica interna enxertada: patência e estado funcional em repouso e após dobutamina

“…, at 3-minute intervals, with the aim of attaining at least 85% of the maximum heart rate (HR) (220 minus age in years) and/or determining contractile abnormality compatible with myocardial ischemia. Atropine could be started at the third or fourth stage, according to our protocol 16 . All DSE were performed by two echocardiographists (simultaneously) and the interpretation (by consensus) was carried out immediately after the end of the test.…”

“…The dobutamine action regarding the increase of oxygen consumption by the myocardium, the modification of the coronary flow and the use of digitalized images favored the dissemination of the dobutamine-stress echocardiography (DSE) as an accurate and safe method to assess coronary artery disease [12][13][14][15][16][17][18][19] and, due to these dobutamine actions and the possibility of non-invasive assessment of the ITAG, the patency of the latter was verified at supraclavicular level, concomitantly to the DSE 20 . The non-grafted ITA flow is predominantly systolic, whereas that of the ITAG, being a hybrid system, usually has diastolic predominance, reflecting the myocardial contractility and the perfusion of the coronary bed in a patent ITAG.…”