Stress Tests For Women

My wife has shortness of breath and sweats when she walks fast or gets anxious. Because she doesn?t get chest pain, she doesn?t think it?s her heart. I urged her to get a stress test but she says her doctor told her that the treadmill test isn?t good at diagnosing heart trouble in women. Is this the case? Thanks to the treadmill test, I avoided a heart attack. Now I want the same thing for my wife.