0000000000608463
AUTHOR
Kölsch B
Intraventrikuläre Obstruktionen bei der Dobutamin-Streßechokardiographie: Determinanten ihrer Entstehung und klinische Folgen (Dynamic intraventricular obstruction during dobutamine stress echocardiography. Determinants of the phenomenon and clinical consequences)
Die Dobutamin-Stresechokardiographie (DSE) fuhrt zu einer starken Hyperkontraktilitat des Myokards bei Tachykardie und Vesodilatation. Diese Effekte konnen zu einer unphysiologischen Abnahme des endsystolischen Volumenindex (ESVI) mit Obstruktion des linksventrikularen Ausflustraktes (LVOT) fuhren. Bei 100 Patienten (Pat.), die sich einer DSE (5–40) μg/kg/min) unterzogen, wurde die kontinuierliche Dopplerregistrierung (DW-Doppler) vor Infusion und bei maximaler Herzfrequenz durchgefuhrt. Eine dynamische, spat-systolische, Flusakzeleration auf mehr als 2 Meter/Sekunde (m/s) unter maximaler Stimulation wurde als systolische Obstruktion des LVOT interpretiert. Manifestationsfaktoren systolisch…
Detection of Strands in Native Aortic Valves by Transesophageal Echocardiography
Prevalence and echocardiographic characteristics of strands on the leaflets of native aortic valves were examined. According to our data, the strands we found in 39% of patients are most likely Lambl's excrescences.
Effects of prostaglandin E1 and buflomedil on left ventricular function in patients with severe chronic occlusive arterial disease: a prospective, randomized, double-blind trial.
In this study, the effect of a course of prostaglandin E ( 1 ) (60 microg/d intravenously [i.v.]) or buflomedil (150 mg/d i.v.) treatment on parameters of left ventricular systolic function was investigated by echocardiography in patients of comparatively advanced age with severe peripheral occlusive arterial disease (Fontaine's stage III or IV). The study population was 20 patients, 12 men and 8 women, between 51 and 85 years of age (average age, 73. 7 years), with multiple coexisting medical conditions. These patients were no longer suitable candidates for other forms of interventional or surgical treatment. The patients were treated with prostaglandin E ( 1 ) or buflomedil in the dosages…
Quantitative assessment of aortic stenosis by three-dimensional echocardiography
The purpose of this study was to assess the feasibility of three-dimensional echocardiography in aortic stenosis. Planimetric determination of valve area and dynamic volume-rendered display were performed. Three-dimensional echocardiography permits display of any desired plane of the cardiac structure. Thus in the case of aortic stenosis, the plane used for planimetric evaluation can be positioned exactly through the valve orifice. Dynamic volume-rendered display may provide a spatial demonstration of the stenotic valve. In 48 patients aortic valve area was measured by planimetry. The three-dimensional data set was acquired by a workstation in the course of a multiplane transesophageal exam…