Does impedance cardiography reliably estimate left ventricular ejection fraction?
The results of this study indicate that the equations that have been used until now can be improved. The new equation provides reliable LVEF values in this group of patients.
If guideline recommendations are literally applied, as many as 84% of adults in Norway could exhibit two or more CVD or risk factors and thus be considered in need of individual, clinical attention. This challenges the widely held presumption that 'the net will close' around a manageable group of individuals-at-risk if several risk factors are jointly considered. As the finding of this study arises in one of the world's most long- and healthy-living populations, it raises several practical as well as ethical questions.