It has been known for many years that the heart and the liver are intimately related. There is a mutual interaction between the function of the heart and the liver and a broad spectrum of acute and chronic entities that affect both the heart and the liver. Chronic hepatitis C virus infection affects more than 3% (170 million) of the world's population.

Assessment of systolic function by echocardiography will be done to 100 hepatitis C virus infected patients who receive antiviral treatment (sofosbuvir and daclatasvir) by biplane simpson's method and by speckle tracking.

Assessment of diastolic function by echocardiography to 30 hepatitis C virus infected patients who will not receive antiviral treatment, by left atrium volume , mitral inflow pattern , tissue doppler annular early and late diastolic velocities .

Inclusion Criteria:

1. patients on continuous regimen (Sofosbuvir and daclatasvir) for 3 months
2. normal baseline trans thoracic echocardiography
3. normal Electrocardiography

Exclusion Criteria:

1 - Diabetes mellitus, hypertension and chronic kidney disease. 2- Hepatitis C virus patients with any baseline Electrocardiography abnormality.

3- Patients with underlying any structural heart disease.