How the doctor determines that it is heart failure?

Having problems and signs that raise the suspicion of heart failure, it is necessary to immediately see your doctor. For discussion of the problems and physical examination the doctor will often suffice for correct diagnosis. You can also decide on further investigation, which will be more reliably identified impairment of cardiac function and the reason for it. These investigations include: electrocardiogram, chest X-ray, ultrasound examination of the heart, the isotopes investigation and stress testing.