Accuracy of the isovolumic relaxation time in the emergency diagnosis of new-onset congestive heart failure with preserved left ventricular systolic function in the setting of B-type natriuretic peptide levels in the mid-range.
Despite the fact that B-type natriuretic peptide (BNP) is a useful diagnostic complement to clinical and radiographic data in the emergency diagnosis of acute congestive heart failure, levels of BNP in the mid-range (100-500 pg/ml) are acknowledged to be inconclusive for the diagnosis. We assessed the diagnostic value of the pulsed Doppler-derived isovolumic relaxation time (IVRT) by bedside Doppler echocardiography in the emergency diagnosis of new-onset congestive heart failure with preserved systolic function in 43 patients presenting with acute severe dyspnea and inconclusive BNP levels. A short IVRT <50 ms was a good predictor of acute congestive heart failure in this clinical setting, with a positive predictive value of 94%.
Arques
Stephane
S
Roux
Emmanuel
E
Sbragia
Pascal
P
Pieri
Bertrand
B
Gelisse
Richard
R
Ambrosi
Pierre
P
Luccioni
Roger
R
D015150:Echocardiography, Doppler; D054143:Heart Failure, Systolic / Q000097:blood / Q000175:diagnosis* / Q000503:physiopathology; D006801:Humans; D009200:Myocardial Contraction / Q000502:physiology*; D020097:Natriuretic Peptide, Brain / Q000097:blood*; D011379:Prognosis; D012720:Severity of Illness Index; D013318:Stroke Volume; D013599:Systole; D016277:Ventricular Function, Left / Q000502:physiology*
D020097:Natriuretic Peptide, Brain