Abstract：
:Noninvasive measurement of cardiac output (CO) and particularly stroke volume (SV) remain difficult but potentially valuable. These variables can be particularly challenging to measure in children with congenital heart disease (CHD). Impedance cardiography (IC) is a technique shown to be accurate in measuring SV in adults and in children with structurally normal hearts. The ease of use and rapidity of SV measurement using IC makes it potentially attractive for young patients with CHD. Advances in IC technology have led to more sophisticated signal-morphology IC (SMIC) devices that may further improve accuracy. We tested the accuracy of SMIC to measure SV in 21 subjects with CHD by comparing measurements with those from cardiac magnetic resonance (CMR) imaging. There was good agreement between SMIC and CMR in measurement of SV: mean difference = 1.7 ml (p = 0.47); r = 0.89. The agreement and correlation persisted when controlling for the differences in blood pressure and heart rate during the two testing methods. We conclude that SMIC is accurate at measuring SV and thus CO when compared to CMR in a variety of forms of CHD.
journal_name
Pediatr Cardioljournal_title
Pediatric cardiologyauthors
Ebrahim M,Hegde S,Printz B,Abcede M,Proudfoot JA,Davis Cdoi
10.1007/s00246-016-1456-xsubject
Has Abstractpub_date
2016-12-01 00:00:00pages
1453-1457issue
8eissn
0172-0643issn
1432-1971pii
10.1007/s00246-016-1456-xjournal_volume
37pub_type
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