Disease relevance of Echocardiography, Doppler

• Differentiation of constrictive pericarditis and restrictive cardiomyopathy by Doppler echocardiography [1].
• Cardiac performance and mitral regurgitation were measured by Doppler echocardiography and right heart catheterization in 12 patients with severe congestive heart failure who performed isometric exercise during control and intravenous administration of dobutamine and nitroglycerin [2].
• Catheterization (n = 5) and Doppler echocardiography in all patients show no significant left ventricular outflow obstruction, aortic insufficiency, or residual VSD [3].
• Adenosine-induced coronary vasodilation during transesophageal Doppler echocardiography. Rapid and safe measurement of coronary flow reserve ratio can predict significant left anterior descending coronary stenosis [4].
• In dilated cardiomyopathy, as in other heart diseases, different left ventricular filling patterns were observed on Doppler echocardiography [5].

Psychiatry related information on Echocardiography, Doppler

• To better understand the pathophysiology of obstruction of left ventricular outflow in hypertrophic cardiomyopathy and to determine the value of intraoperative transesophageal Doppler echocardiography in decision making, 32 consecutive patients undergoing ventriculomyectomy were assessed [6].

High impact information on Echocardiography, Doppler

• M-mode and Doppler echocardiography showed normal left ventricular dimensions and systolic function, but diastolic dysfunction in the mutant mice evidenced by a 50% reduction in the E/A ratio of mitral inflow velocities [7].
• OBJECTIVE: To evaluate the acute cardiovascular effects of MDMA by using transthoracic two-dimensional and Doppler echocardiography [8].
• METHODS AND RESULTS: The present study was a substudy in the international Metoprolol in Dilated Cardiomyopathy Trial. Transmitral Doppler echocardiography was used to evaluate diastolic function in 77 patients randomly assigned to placebo (n = 37) or metoprolol (n = 40) [9].
• After surgery, intraventricular flow was studied by Doppler echocardiography at rest, during nipride infusion, and during dobutamine infusion [10].
• Participants were studied by individualized treadmill testing, Doppler echocardiography, and assays of resting plasma catecholamines, upright plasma renin and aldosterone, and lipid, glucose, and insulin concentrations [11].

Chemical compound and disease context of Echocardiography, Doppler

• The purpose of this study was to compare the angiotensin II type 1 receptor antagonist candesartan cilexitil (candesartan) and the angiotensin-converting enzyme inhibitor cilazapril on cardiac function, assessed by Doppler echocardiography and cardiac gene expression associated with cardiac remodeling, in rats with myocardial infarction [12].
• The aim of this study was to investigate the effects of a 6-month octreotide treatment on cardiac mass and function by means of Doppler echocardiography in 11 normotensive patients affected with active acromegaly [13].
• Fifteen preterm infants who weighed 0.7 to 2.0 kg and had clinical evidence of a patent ductus arteriosus (PDA) were studied by combined 2-dimensional and Doppler echocardiography before and after the administration of indomethacin [14].
• METHODS: Ten patients 3 to 16 years of age (mean age 9.6 +/- 3.8 years) with moderate to severe chronic mitral insufficiency were examined by means of Doppler echocardiography before and 2 hours after receiving a single oral dose of enalapril (0.40 mg/kg) [15].
• In 30 patients with moderate or severe aortic stenosis (AVA < or = 1.2 cm(2)), Doppler echocardiography indices of AVA, valve resistance, and %LVSW loss were measured at multiple transvalvular flow rates during dobutamine infusions (0-10 microg/kg/min) to compare their hemodynamic stability [16].

Biological context of Echocardiography, Doppler

• At rest, nitroglycerin decreased mitral regurgitant volume from 18 +/- 13 to 11 +/- 11 ml (p less than 0.05), while forward stroke volume, by both thermodilution and Doppler echocardiography, substantially increased [2].
• Blood pressure, systemic hemodynamics, two-dimensional guided M-mode and Doppler echocardiography, and laboratory values (serum creatinine, lipid profile) were recorded at baseline and at 12 weeks [17].
• Cardiac output, measured invasively, and left ventricular outflow tract gradient, estimated by Doppler echocardiography, were studied in 15 patients with hypertrophic obstructive cardiomyopathy [18].
• In search of the Holy Grail: the study of diastolic ventricular function by the use of Doppler echocardiography [19].
• In conclusion, Doppler echocardiography showed that candesartan and cilazapril equally improved systolic and diastolic function and that ventricular remodeling accompanied modulation of cardiac gene expression [12].

Anatomical context of Echocardiography, Doppler

• The dynamics between mitral anulus motion, and, thus, motion of the base of the heart, and filling of the left atrium and ventricle were studied by Doppler echocardiography in 12 normal subjects and 28 patients with dilated cardiomyopathy [20].
• Abnormal left ventricular early diastolic filling during dobutamine stress Doppler echocardiography is a sensitive indicator of significant coronary artery disease [21].
• Restrictive left ventricular filling pattern in dilated cardiomyopathy assessed by Doppler echocardiography: clinical, echocardiographic and hemodynamic correlations and prognostic implications. Heart Muscle Disease Study Group [5].
• Superior vena cava and hepatic vein Doppler echocardiography in healthy adults [22].
• Pulmonary artery pressures (PAP) estimated by Doppler echocardiography were significantly lower with nifedipine, but arterial PO2, oxygen saturation, and alveolar-arterial oxygen pressure gradient were not significantly different between groups at high altitude [23].

Associations of Echocardiography, Doppler with chemical compounds

• OBJECTIVES: We sought to evaluate whether coronary flow velocity reserve (CFR) (the ratio between hyperemic and baseline peak flow velocity), as measured by transthoracic Doppler echocardiography during adenosine infusion, allows detection of flow changes in the left anterior descending coronary artery (LAD) before and after stenting [24].
• Use of exercise Doppler echocardiography to evaluate cardiac drugs: effects of propranolol and verapamil on aortic blood flow velocity and acceleration [25].
• Prolongation of isovolumetric relaxation time as assessed by Doppler echocardiography predicts doxorubicin-induced systolic dysfunction in humans [26].
• Abnormal cardiac function in the streptozotocin-induced non-insulin-dependent diabetic rat: noninvasive assessment with doppler echocardiography and contribution of the nitric oxide pathway [27].
• METHODS: We determined the association between blood cholesterol levels and progression of native AS (assessed by Doppler echocardiography at baseline and at least six months later; mean interval, 3.7 +/- 2.3 years) in a community-based study of 156 patients (age 77 +/- 12 years; 90 men) [28].

Gene context of Echocardiography, Doppler

• This was confirmed by the in utero Doppler echocardiography, which showed increased outflow velocity in E12.5 to 14.5 CMV43 and Cx43 knockout fetuses [29].
• Doppler echocardiography revealed atrial dysfunction and progressive atrial enlargement that was moderate at 3 and 8 weeks, and progressed at 12 and 21 weeks of age (all p<0.05 vs. WT) [30].
• METHODS AND RESULTS: In order to verify the effects induced on pulmonary circulation and right heart by BA or COPD the cardiac function was assessed by mono and bidimensional Doppler echocardiography in 10 patients with BA (group A), 10 with COPD (group B) and 10 healthy control subjects (group C) [31].
• Noninvasive evaluation of the ratio of pulmonary to systemic flow in atrial septal defect by duplex Doppler echocardiography [32].
• We evaluated the ability of M-mode and Doppler echocardiography to assess left ventricular (LV) function reliably and repeatedly in mice and tested whether these techniques could detect physiological alterations in phospholamban (PLB)-deficient mice [33].

Analytical, diagnostic and therapeutic context of Echocardiography, Doppler

• Anesthetized wild-type mice (n = 7) and mice deficient in PLB (n = 8) were studied with two-dimensional guided M-mode and Doppler echocardiography using a 9-MHz imaging and 5- to 7.5-MHz Doppler transducer [33].
• METHODS: Transthoracic Doppler echocardiography during 90-s venous adenosine infusion (140 microg/kg body weight per min) was used to measure CFR of the LAD in 45 patients before and 3.7 +/- 2 days after successful stenting, as well as in 25 subjects with an angiographically normal LAD (control group) [24].
• Eleven patients who had undergone total thyroidectomy for differentiated thyroid cancer and who were on chronic TSH-suppressive therapy with levothyroxine (L-T4), underwent 24-h Holter electrocardiogram and Doppler-echocardiography before and after acute recombinant human TSH (rhTSH) administration for disease staging [34].
• METHODS: Doppler echocardiography and glucose clamping combined with indirect calorimetry were performed in 29, newly diagnosed, hypertensive men, free from cardiac and metabolic drugs [35].
• These methods include echocardiography, Doppler echocardiography, CO2 rebreathing, and impedance cardiography [36].

References