You are at a community hospital caring for a 78-year-old male patient with history of CHF and HTN who has presented with an acute pulmonary edema, STEMI, and hypotension. You have placed him on NIPPV and initiated norepinephrine drip and a 250cc crystalloid challenge without much improvement. You anticipate needing to initiate an inotropic agent. Which of the following factors may lead you towards using milrinone as your first choice?