Dobutamina e o Bloqueio AV

The report of Mobitz type II AV block occurring during a dobutamine stress test must remain questionable. True Mobitz type II AV block during a dobutamine stress echocardiography is theoretically possible based on its documented occurrence with the administration of isoproterenol. The misclassification of second-degree AV block type I and II during dobutamine stress echocardiography is important because a wrong diagnosis of Mobitz type II AV block, even if transient may cause the inappropriate implantation of a pacemaker. In this context, one should remember that the European and American guidelines for device therapy recommend pacing for Mobitz Type II second-degree AV block regardless of duration or symptoms

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Interessante abordagem dos efeitos da Dobutamina. Parece possível que a droga cause alterações na condução AV mas é de pouca relevância clínica.