نتایج جستجو برای: right ventricular mechanics
تعداد نتایج: 542378 فیلتر نتایج به سال:
Abstract Background Repaired tetralogy of Fallot patients develops postoperative complications that are in need for follow-up and re-intervention some circumstances. CMR myocardial feature tracking is a novel method allows quantification bi-atrial bi-ventricular mechanics deformation. So our aim to assess the added value cardiac magnetic resonance imaging its advanced analysis evaluation repair...
INTRODUCTION It is generally known that positive pressure ventilation is associated with impaired venous return and decreased right ventricular output, in particular in patients with a low right atrial pressure and relative hypovolaemia. Altered lung mechanics have been suggested to impair right ventricular output in COPD, but this relation has never been firmly established in spontaneously bre...
BACKGROUND Electromechanical discoordination may contribute to long-term pulmonary right ventricular (RV) dysfunction in patients after surgery for congenital heart disease. We sought to evaluate changes in RV function after temporary RV cardiac resynchronization therapy. METHODS AND RESULTS Twenty-five patients aged median 12.0 years after repair of tetralogy of Fallot and similar lesions we...
Optimization of right atrial (RA) mechanics is important for maintaining right ventricular (RV) filling and global cardiac output. However, the impact of pericardial restraint on RA function and the compensatory role of the right atrium to changes in RV afterload remain poorly characterized. In eight open-chest sheep, RA elastance (contractility) and chamber stiffness were measured (RA pressure...
Infants with congenital diaphragmatic hernia (CDH) fail to adapt at birth because of persistent pulmonary hypertension (PH), a condition characterized by excessive muscularization and abnormal vasoreactivity of pulmonary vessels. Activation of soluble guanylate cyclase by BAY 41-2272 prevents pulmonary vascular remodeling in neonatal rats with hypoxia-induced PH. By analogy, we hypothesized tha...
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