To clarify the mechanism of displacement of the left ventricular diastolic pressure-volume function with alteration of loading conditions, the effects of nitroglycerin on pressure-volume relations in 13 patients were compared with those of amyl nitrite in 13 other patients during cardiac catheterization. After nitroglycerin, average systemic mean arterial pressure declined by 15.1 mm Hg (17%) a...

BACKGROUND Few data are available on diastolic function in patients with aortic stenosis (AOS) with indication of surgical treatment. A potential correlation between biomarkers and diastolic function has not been established. OBJECTIVE The aim of our study was to evaluate diastolic function in patients with AOS waiting for aortic valve replacement (AVR) echocardiographically, and to verify it...

OBJECTIVES The present study was designed to evaluate the effects of surgical procedure on left ventricular systolic and diastolic function in patients with mitral regurgitation. BACKGROUND Left ventricular systolic function has been shown to decline after operation in patients with chronic mitral regurgitation. METHODS Using simultaneous cineangiography and left ventricular micromanometry,...

BACKGROUND Cardiac structure and function are well-studied in Western countries. However, epidemiological data is still scarce in China. METHODS Our study was conducted in the framework of cardiovascular health examinations for the current and retired employees of a factory and their family members. According to the American Society of Echocardiography recommendations, we performed echocardio...

the cardiac action of phenoxybenzamine (dibenzyline) was studiedusing the maximum rate of pressure rise in the left ventricle as a measure of myocardial contractility. cardiac function was assessed by increasing the pressure load on the heart and measuring contractility as reflected by dp/dt. dibenzyline was found to change the cardiac response to pressure load. the rate of pressure increase in...

D iabetes is a risk factor for the development of symptomatic heart failure, particularly in elderly patients with type 2 diabetes (1,2). Heart failure that occurs as the result of impaired myocardial relaxation and compliance has been termed diastolic heart failure (3). Diastolic heart failure develops despite normal left ventricular systolic contractile function and leads to significant morbi...

echocardiography is a non-invasive diagnostic technique which provides information regarding cardiac function and hemodynamics. it is the most frequently used cardiovascular diagnostic test after electrocardiography and chest x-ray. however, in a patient with acute chest pain, transthoracic echocardiography is essential both for diagnosing acute coronary syndrome, zeroing on the evaluation of v...