A 68-year-old patient is admitted to the ICU following an ex…

A 68-year-old patient is admitted to the ICU following an extensive anterior wall myocardial infarction. Assessment reveals:HR 118/minBP 86/52 mm HgCardiac Index: 1.8 L/min/m²Pulmonary Capillary Wedge Pressure (PCWP): 24 mm HgBilateral crackles on auscultationCool, mottled extremitiesUrine output: 15 mL/hrThe physician diagnoses cardiogenic shock secondary to left ventricular failure. Despite initial treatment, the patient continues to demonstrate poor cardiac output and end-organ hypoperfusion. The physician orders a continuous infusion of milrinone (Primacor).Which of the following best explains the rationale for selecting milrinone?