It’s possible to have a heart attack despite a normal EKG reading. A limitation of EKG is that it cannot show an asymptomatic blockage in your arteries that may put you at risk of a future heart attack. EKGs are best used as a predictor of a future heart attack in combination with other tests.
Does heart disease always show on ECG?
A person with heart disease may have a normal ECG result if the condition does not cause a disturbance in the electrical activity of the heart. Other diagnostic methods may be recommended if heart disease is suspected.
Can EKG Miss heart failure?
A chest X-ray can be useful to identify evidence of heart failure or other lung pathology; however, a normal result does not rule out a diagnosis of heart failure. An electrocardiogram (ECG) is often abnormal in patients with heart failure, although up to 10% of patients may have a normal ECG.
Will an ECG show blocked arteries?
A health care provider might use an electrocardiogram to determine or detect: Irregular heart rhythms (arrhythmias) If blocked or narrowed arteries in the heart (coronary artery disease) are causing chest pain or a heart attack.
What does a normal EKG rule out?
The primary purpose of the EKG is to measure the rate at which your heart is beating. It also determines whether the heart muscle is performing at a healthy rhythm, and whether or not the beats are irregular or steady.