Diagnosing Acute Heart Failure (AHF): A Validated Prediction Model
	Risk Factor	Value
	Age (yrs)
	Estimated Pre-Test Probability of AHF ( 0 to 1.0 )
	NT-proBNP Level
	Probability That Acute Heart Failure Is Present
	Improving the Diagnosis of Acute Heart Failure Using a Validated Predicition Model. Steinhart, B, et al. J Am Coll Cardiol 2009;54:1515–21.
	Calculator Design and HTML transfer by Dr. John Coyle. 2009.