What is a reasonable timeline for a left heart catheterization in a patient with newly diagnosed severe LV systolic dysfunction of unclear etiology and without an ACS presentation?   

Like most problems facing cardiologists, making absolutes about any patient can be misleading. In patients with newly discovered left ventricular dysfunction, symptomatic or asymptomatic, it is important to put the entire clinical picture together to decide what would be the next diagnostic step. Pr...