نتایج جستجو برای: dobutamine
تعداد نتایج: 3617 فیلتر نتایج به سال:
OBJECTIVES To systematically compare the results of dobutamine stress echocardiography in matched groups of hypertensive and normotensive patients with anginal chest pain and normal coronary arteriograms (CPNA). SETTING University hospital. SUBJECTS 33 patients with exertional anginal chest pain, a positive exercise stress ECG, and a completely normal coronary arteriogram; 17 had a history ...
PURPOSE Previous studies demonstrated that low-dose dobutamine stress cine magnetic resonance imaging (MRI) and delayed contrast-enhanced MRI can provide assessments of myocardial viability. The purpose of this study was to evaluate the comparative diagnostic values of dobutamine cine MRI and delayed contrast-enhanced MRI for predicting functional recovery of myocardial contraction in patients ...
Opioids are well known to cause cardiovascular depression. The aim of the present investigation was to determine whether an interaction of opioid derivatives with catecholamines might be involved in these hemodynamic alterations. Six comatose patients were enrolled into a prospective, nonrandomized pilot trial. All patients first received a continuous i.v. infusion of dobutamine (10 microgram. ...
Dobutamine improves systolic as well as diastolic function, but its effect on left ventricular (LV) asynchrony is unknown. An on-line automated segmental motion analysis (A-SMA) system was developed, based on an automatic border detection technique, to evaluate the effect of dobutamine on LV asynchrony in patients with LV hypertrophy (LVH). Low dose (5 microg x kg (-1) x min(-1)) dobutamine str...
BACKGROUND The determination of coronary flow reserve (CFR) is an essential concept at the moment of decision-making in ischemic heart disease. There are several direct and indirect tests to evaluate this parameter. In this sense, dobutamine stress echocardiography is one of the pharmacological method most commonly used worldwide. It has been previously demonstrated that CFR can be determined b...
BACKGROUND Levosimendan, a novel calcium sensitiser, improves myocardial contractility without causing an increase in myocardial oxygen demand. We compared the effects of levosimendan and dobutamine on haemodynamic performance and clinical outcome in patients with low-output heart failure. METHODS Patients were recruited into a multicentre, randomised, double-blind, double-dummy, parallel-gro...
BACKGROUND The purpose of this study was to determine the predictive value of dobutamine stress echocardiography for perioperative cardiac events in patients scheduled for elective major noncardiac vascular surgery. METHODS AND RESULTS Patients (n = 136; mean age, 68 years) unable to exercise underwent a dobutamine stress test before surgery (incremental dobutamine infusion [10-40 micrograms....
Yano, Masafumi, Michihiro Kohno, Tomoko Ohkusa, Mamoru Mochizuki, Jutaro Yamada, Masateru Kohno, Takayuki Hisaoka, Kaoru Ono, Taketo Tanigawa, Shigeki Kobayashi, and Masunori Matsuzaki. Effect of milrinone on left ventricular relaxation and Ca uptake function of cardiac sarcoplasmic reticulum. Am J Physiol Heart Circ Physiol 279: H1898–H1905, 2000.—Milrinone, a phosphodiesterase 3 (PDE3) inhibi...
BACKGROUND We aimed to investigate the effect of levosimendan on biomarkers of myocardial injury and systemic hemodynamics in patients with septic shock. MATERIAL AND METHODS After achieving normovolemia and a mean arterial pressure of at least 65 mmHg, 38 septic shock patients with low cardiac output (left ventricular ejective fraction), LEVF £45%) were randomly divided into two groups: levosi...
CONTEXT Because acute decompensated heart failure causes substantial morbidity and mortality, there is a need for agents that at least improve hemodynamics and relieve symptoms without adversely affecting survival. OBJECTIVE To assess the effect of a short-term intravenous infusion of levosimendan or dobutamine on long-term survival. DESIGN, SETTING, AND PATIENTS The Survival of Patients Wi...
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