P1270Effects of blood pressure variability on layer-specific longitudinal strain in hypertensionP1271 Left atrial dynamics and diastolic function in hypertensive patientsP1272Echocardiographic evaluation of right ventricular function in patients with chronic obstructive pulmonary disease in comparison with healthy groupP1273The impact of preeclampsia on myocardial recovery in women with peripartum cardiomyopahty - speckle tracking studyP1274Diagnostic accuracy of bedside lung ultrasonography in emergency (BLUE) protocol in discriminating cardiovascular causes of acute dyspneaP1275Heart failure with preserved and reduced ejection fraction - the mysterious role of ghrelin in the improvement of cardiac mechanicsP1276Prolonged atrial electromec