BACKGROUND Left ventricular myocardial performance index is a Doppler-derived parameter of nongeometrical ventricular function that measures both systolic and diastolic function of the left ventricle. The objective of this study was to compare prognostic value of left ventricular myocardial performance index with global left ventricle function in patients undergoing coronary artery bypass graft...

BACKGROUND The inward rectifier K+ current (IK1) plays an important role in governing cardiac electrical activity and is well known to have different properties in the atrium compared with the ventricle. Several inward rectifier K+ channel (IRK) subunits (hIRK, HH-IRK1, HIR, and TWIK-1) with different properties have been cloned from human tissues, but their relative expression in cardiac tissu...

Dehydroepiandrosterone (DHEA) prevents chronic hypoxia-induced pulmonary hypertension and associated right ventricle dysfunction in rats. In this animal model, reoxygenation following hypoxia reverses pulmonary hypertension but not right ventricle dysfunction. We thus studied the effect of DHEA on the right ventricle after reoxygenation, i.e. after a normoxic recovery phase secondary to chronic...

endoscopic anatomy of the third ventricle microsurgical wolfgang seeger microsurgical and endoscopic approaches in endoscopic anatomy of the third ventricle microsurgical endoscopic anatomy of the third ventricle microsurgical endoscopic anatomy of the third ventricle microsurgical extended endoscopic endonasal approach to the third endoscopic anatomy of the fourth ventricle thejns arq bras neu...

A comparison was performed between the echocardiographic (EchoC) indices for the pump and contraction function of left ventricle and the stage of left-ventricle insufficiency, determined according to clinical criteria of 82 patients with ischemic heart disease (IHD)--old myocardial infarction and (or stable angina pectoris without left-ventricle infarction and for stable angina pectoris without...

Previous findings have shown that saffron (Crocus sativus L.) extract and its active constituents produce antinociceptive effects in the rat models of orofacial pain. In the present study, the central H2 histaminergic and alpha-2 adrenergic receptors involvement in crocetin-induced antinociception in orofacial formalin pain in rats was evaluated.The guide cannula was implant...

ROMERO, TOMAS, JAMES COVELL, AND WILLIAM F. FRIEDMAN. A comparison of pressure-volume relations of the fetal, newborn, and adult heart. Am. J. Physiol. 222(5) : 1285-l 290. 1972.-A marked paucity of information exists concerning the physiological characteristics of the developing heart. The purpose of the present investigation was to analyze and compare the compliance of the right and left vent...

ebstein anomaly is characterized by apical displacement of the septal and posterior tricuspid valve leaflets, leading to atrialization of the right ventricle and could be diagnosed in a routine transthoracic echocardiography exam. we reported a young man with right sided heart failure symptoms who was found to have biventricular failure with suspected apical displacement of septal leaflet of tr...

delayed evaluation and management of penetrating cardiac injuries especially mortar fragments were performed in 30 war victims in the shahid rajai heart hospital, tehran. all were men with a mean age of 20.7 years. pleuritic chest pain was the most common symptom (53.3%), while physical examination was negative in the majority of cases (66.8%). 50 percent of the cases had pericardial effusion o...

Cardiac magnetic resonance (CMR) imaging can be used for the assessment of aortic stenosis in terms of both anatomic and hemodynamic measures of stenosis severity and for evaluation of the left ventricular response to valvular obstruction. In addition, CMR-based assessment of aortic flow patterns has been implicated in poststenotic ascending aortic aneurysm development. In this issue of Circula...