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Chronic kidney disease (CKD) is associated with increased morbidity and mortality. Cardiovascular disease (CVD) is the most common complication and a chief cause of death in patients with end stage renal disease (ESRD) accounting for 45% to 50% of causes of death in ESRD patient. Pulmonary hypertension (PH) occurs frequently in patients with CKD. The role of hemodialysis in reducing pulmonary artery pressure (PAP) and improving RV systolic function in not properly studied. Purpose To evaluate the effect of hemodialysis on Right ventricular (RV) systolic function and Pulmonary artery pressures using echocardiography in newly diagnosed end stage renal disease patients and after three months of regular hemodialysis. Patients and Methods 30 patients recently diagnosed to have ESRD were enrolled and were followed up after three months. Trans-thoracic echocardiography was done prior to the first dialysis session and after three months of regular hemodialysis to asses RV systolic function and PAP. Results There was a significant improvement of RV systolic function assessed by trans-annular plane systolic excursion (TAPSE)(mm)(pre dialysis 18.9 ± 3.76, post 21.56 ±3.51, p &amp;lt;0.01), fractional area change (FAC)(%)(pre dialysis 41.27 ± 8.9, post 47.5 ± 6.1, p &amp;lt; 0.01),tricuspid lateral annular systolic velocity (S’)(cm/s) (pre dialysis 12.3 ± 2.79, post 14.16 ± 2.3, p &amp;lt; 0.01),myocardial performance index (MPI)(pre dialysis 0.2 ± 0.1, post 0.1 ± 0.1, p &amp;lt; 0.01)and right ventricular outflow tract fractional shortening (RVOT-FS)(%)(pre dialysis 36.5 ± 9.5, post 39.3 ± 8.6, p &amp;lt; 0.01)post dialysis (P value &amp;lt;0.01). All parameters of assessing pulmonary artery pressures; systolic pulmonary artery pressure (PASP)(mmHg)(pre dialysis 48.03 ± 17.16, post 35.12 ± 14.73, p &amp;lt; 0.01), pulmonary diastolic artery pressure (PADP)(mmHg)(pre dialysis 24.05 ± 9.7, post 18.12 ± 9.64, p &amp;lt; 0.01), mean pulmonary artery pressure (MPAP)(mmHg) (pre dialysis 35.61 ± 15.07, post 25.8 ± 12.06, p &amp;lt; 0.01), pulmonary capillary wedge pressure (PCWP)((pre dialysis 23.28 ± 8.74, post 17.39 ± 5.87, p &amp;lt; 0.01) and pulmonary vascular resistance (PVR)(Wood unit)(pre dialysis 1.89 ± 0.57, post 1.43 ± 0.46, p &amp;lt; 0.01) improved significantly post dialysis (P value &amp;lt;0.01).There was a significant inverse correlation between the duration of renal impairment and the improvement in SPAP and PCWP after the initiation of dialysis (P values are 0.021 and 0.015, Correlation co-efficient -0.421, -0.441 respectively). The best cut-off value for weight reductionduring dialysis for prediction of improvement of SPAP is 2.75 Kg (AUC = 0.950, CI = 0.881-1.000, P value &amp;lt; 0.01). Conclusions The present study shows that significant improvement occurred in all RV systolic function parameters and all parameters of assessing pulmonary artery pressures post dialysis in patients recently diagnosed to have ESRD. RVOT FS is a reliable method for assessing RV function and it is significantly correlated only with TAPSE and FAC at the baseline before dialysis.

P211 Short term impact of hemodialysis on right ventricular systolic function and pulmonary artery pressure in patients with end stage renal disease