In cats or dogs is it contraindicated to treat a heart case with Pimobendan without an echocardiogram confirming congestive heart failure? In cases of financial constraints or ultrasound not available for an emergency patient?

In cats or dogs is it contraindicated to treat a heart case with Pimobendan without an echocardiogram confirming congestive heart failure? In cases of financial constraints or ultrasound not available for an emergency patient?