Left ventricular stroke volume measurement by impedance cardiography correlates with echocardiography in neonates
نویسندگان
چکیده
منابع مشابه
Changes in left ventricular stroke volume measured by Doppler echocardiography.
Cardiac stroke volume was measured simultaneously by Doppler echocardiography and thermodilution in 20 patients with coronary artery disease. Stroke volume as determined by ultrasound was calculated from the area of the aortic orifice and the flow velocity just distal to the aortic cusps. The recordings were made twice at rest. Ten patients were given dobutamine (2.5 and 5.0 micrograms/kg/min) ...
متن کاملInstantaneous measurement of left and right ventricular stroke volume and pressure-volume relationships with an impedance catheter.
The feasibility of using continuous on-line recording of intraventricular electrical impedance to measure ventricular stroke volume was assessed in 12 patients at cardiac catheterization with a multielectrode impedance catheter and a 1.3 kHz measuring current of 4 microA. Stroke volumes determined by electrical impedance were compared with stroke volumes determined by the thermodilution techniq...
متن کاملquantification of aortic regurgitation severity by left ventricular to right ventricular stroke volume ratio
background: echocardiography is the most common test used for the evaluation of aortic regurgitation (ar). however, the role of echocardiography as an available and inexpensive method in the quantification of ar by the left ventricle to right ventricle stroke volume ratio (lv/rv sv ratio) has not been completely investigated. methods: between june 2005 and december 2007, 132 consecutive patient...
متن کاملNon-invasive left ventricular volume determination by two-dimensional echocardiography.
Twenty patients undergoing routine left ventricular single-plane angiography have been investigated by an ultrasonic triggered B-scan technique to provide a two-dimensional cross-sectional image of the left ventricle in end-systole end-diastole. An area-length method has been used to establish the correlation between the angiographic and the echocardiographic assessments of left ventricular cha...
متن کاملThe Stroke Volume and the Cardiac Output by the Impedance Cardiography
Acest studiu este despre impedanţa cardiacă, utilizată pentru determinarea volumul sanguin, pompat de vetricul stang la o singura contractie a inimii, şi a debitul cardiac. În majoritatea articolelor privind acest subiect, persoanele participante la experiment prezintă probleme cardiace. Din acest motiv au fost efectuate teste atât pe subiecţi sănătoşi cât şi pe subiecţi diagnosticaţi cu afecţi...
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ژورنال
عنوان ژورنال: Critical Care
سال: 2012
ISSN: 1364-8535
DOI: 10.1186/cc10832