Reserva contráctil negativa con bajas dosis de dobutamina en los pacientes con miocardiopatía isquémica estudiados mediante gated-SPECT de perfusión miocárdica

A negative contractile reserve was not uncommon in patients with ischemic cardiomyopathy and was associated with a general decrease in left ventricular systolic function. It was observed mainly in myocardial segments that appeared viable on scintigraphy and were supplied by a patent coronary artery.