Background: Hemodialysis is the process of cleaning blood outside the body. It involves taking blood from a blood vessel and passing it through a synthetic filter, known as a dialyzer. Intradialytic hypertension (IDH) is a phenomenon where blood pressure increases during hemodialysis, and is associated with increased mortality.  Majority of patients with IDH suffer and die from cardiovascular complications.  Aim of the work: The aim of the work is to estimate the incidence of IDH among the hemodialysis patients, and to study myocardial functional disorders during hemodialysis in IDH patients. Patient and Methods: study was carried out in hemodialysis unit, internal medicine department of Benha University Hospital, where 100 patients were selected, conventional echocardiography was done immediately before and after HD, Results: incidence of IDH was 30%. Mean LVEDD significantly decreased post dialysis from 48.3 mm to 46.6 mm. P value was Conclusion: IDH is a common alteration in the dialysis population with significant changes on ECHO parameter.