What is systole and diastole on ECG?

2 – Relationship between the Cardiac Cycle and ECG: Initially, both the atria and ventricles are relaxed (diastole). The P wave represents depolarization of the atria and is followed by atrial contraction (systole). Atrial systole extends until the QRS complex, at which point, the atria relax.

What part of ECG is systole?

QRS complex
In an electrocardiogram (ECG, or EKG), the beginning of ventricular systole is marked by the deflections of the QRS complex. Atrial systole occurs toward the end of ventricular diastole, completing the filling of the ventricles.

Can diastolic dysfunction be seen on ECG?

Conclusion. Analysis of certain parameters in resting ECG especially QTc and P wave dispersion can help in prediction of diastolic dysfunction. Also, the appearance of a “hump” at the ST segment during exercise testing is associated with higher incidence of diastolic dysfunction.

What happens to the heart during diastole?

diastole, in the cardiac cycle, period of relaxation of the heart muscle, accompanied by the filling of the chambers with blood. Diastole is followed in the cardiac cycle by a period of contraction, or systole (q.v.), of the heart muscle.

When is end diastole on ECG?

As illustrated in Figure 2, diastole begins when the aortic valve closes and it ends when the mitral valve closes. Systole occurs between mitral valve closure and aortic valve closure.

What are the symptoms of diastolic dysfunction?

Symptoms of diastolic dysfunction include:

• Dyspnea (shortness of breath)
• Labored breathing during exercise that gets progressively worse.
• Difficulty breathing while lying down.
• Difficulty breathing while sleeping.
• A chronic cough.
• Excessive fatigue.
• Unusual weight gain.
• Edema (swelling) of the legs and ankles.

How is diastolic heart failure diagnosed?

Doppler echocardiography has assumed the primary role in the noninvasive assessment of cardiac diastolic function and is used to confirm the diagnosis of diastolic heart failure.