Measuring stroke volume noninvasively.
نویسندگان
چکیده
منابع مشابه
Comparison of electrical velocimetry and transoesophageal Doppler echocardiography for measuring stroke volume and cardiac outputy
Background. Impedance cardiography (ICG) has been used extensively to estimate stroke volume (SV) and cardiac output (CO) from changes of thoracic electrical bioimpedance (TEB). However, studies comparing ICG with reference methods have questioned the reliability of this approach. Electrical velocimetry (EV) provides a new algorithm to calculate CO from variations in TEB. As the transoesophagea...
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Volume tests in a regression context were introduced in 1939. The concept was revisited in 1985, this time in the case of contingency tables to refine the power of explanation of the χ2 test. This article considers volume tests as a measure of dependency for tables with fixed margins. Building on earlier contributions, this article suggests the use of the volume test statistic as a measure of d...
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within-one-month (A) and 6-months (B) post-stroke timepoints. The patient was diagnosed with Right posterior caudate-putamen subacute stroke. Note marked improvements with time in the contralateral (L) side. Fig.1 (left): Within patient comparison of PVEc ASL CBFd images from the within-onemonth of the sub-acute stroke (2nd row) and 6months post-stroke (3rd row). The difference between the two ...
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BACKGROUND Impedance cardiography (ICG) has been used extensively to estimate stroke volume (SV) and cardiac output (CO) from changes of thoracic electrical bioimpedance (TEB). However, studies comparing ICG with reference methods have questioned the reliability of this approach. Electrical velocimetry (EV) provides a new algorithm to calculate CO from variations in TEB. As the transoesophageal...
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ژورنال
عنوان ژورنال: Circulation
سال: 1977
ISSN: 0009-7322,1524-4539
DOI: 10.1161/circ.56.4.902398