P235Relation between myocardial deformation by three-dimensional speckle tracking analysis , control of the hypertension and functional capacity in patients with systemic hypertensionP236Obstructive sleep apnoea is often under-recognised in patients with acute myocardial infarction, but commonly contributes to left ventricular diastolic dysfunctionP237Intrinsic left ventricular dysfunction in Behcet disease in comparison with systemic disease activity: insights from speckle tracking echocardiographyP238Echocardiography changes during singleton and twin pregnancyP239Proposal of two new echocardiographic parameters for the differentiation of pre-capillary from post-capillary pulmonary hypertensionP240The coincidence of implanted device and number of electrodes with the presence of residual fibrotic tissue after transvenous leads extraction assessed in echocardiographic examP241Hemoglobin is an independent predictor of left ventricular hypertrophy in postmenopausal women but not in premen

Le résumé fourni par la source

The purpose of this study was to investigate left ventricular (LV) function in hypertensive patients by 3-dimensional (3D) speckle tracking imaging, and determine the relation between the LV mechanics and functional capacity in this population. This cross-sectional study included 20 treated subjects with well-controlled arterial hypertension (group B) and 20 treated participants with uncontrolled hypertension (group A), adjusted by gender and age. All the subjects underwent 24-hour blood pressure monitoring, complete 2-dimensional and 3D examination, and exercise testing. Patients had similar 3D LV ejection fraction. LV mass was higher in group of uncontrolled hypertension (154.71 ± 49.7 g/m2 versus 147.12±44.8 g/m2 p < 0.01), as well as E/E'ratio (11.4 versus 8.9, p =0.02). 3D global longitudinal and circumferential strain and strain rate were significantly decreased in patients with inadequately controlled hypertension (LS 16.25% versus -19.24%, p=0.007, L-SR -0.97/sec versus -1.48/sec, p=0.04, CS -17.89%versus -21.76%, p=0.04, respectively), while the difference of radial strain and strain rate did not reach statistical significance. Group A of patients had also a significantly lower functional capacity (mean duration of test 13,3 min. versus 17,4 min, nr. of METS 9.4 versus 13.7). Duration of exercise was independently associated with LV mass , mean BP at daytime , E/E' ratio and 3D global longitudinal strain (β = 0.34, p = 0.02) in the whole hypertensive population in our study. In conclusion, LV longitudinal strain and functional capacity are significantly impaired in the patients with uncontrolled hypertension in comparison with the well-controlled hypertensive patients and are independently associated.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.