Ability of a test to improve health outcomes
that are relevant to the individual patient.
The clinical effectiveness of BNP testing for
diagnosis of heart failure in patients presenting to emergency with acute
dyspnea were investigated in RCTs that compared the addition of BNP testing
with standard investigations alone followed by routine care. A meta-analysis of
these RCTs reported that addition of BNP testing decreased length of hospital
stay by ~1 day; possibly reduced admission rates, but did not affect 30-day mortality