I've had several echos, stress tests, ekgs, and mri. is that enough testing to find out if i have heart failure? i have pvcs, tachy & new symp sob.

Yes--: Sounds like they have run you through the mill -- ok now it's time for your doctors to conclude --.

In general-yes: In general the tests done are sufficient if however the diagnosis is still in doubt other tests can be considered such as a blood test called a brain naturetic peptid , cxr or cardiac catheterization., .

Generally, yes: There are two types of heart failure, systolic and diastolic. The echo alone is enough to exclude systolic failure and to make diastolic failure quite unlikely if the echo was done well and correctly interpreted. The gold standard test for diastolic heart failure is a catheterization to measure heart pressures directly, but this may be overkill in your situation. Your md will advise.