Elisabeth Bendstrup

NT-proBNP

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  • Charlotte Andersen
  • Søren Mellemkjær, Department of Cardiology, Aarhus University Hospital, Skejby Hospital, Aarhus, Denmark.
  • ,
  • Ole Hilberg, Department of Respiratory Diseases and Allergy, Aarhus University Hospital, Aarhus, Denmark.
  • ,
  • Elisabeth Bendstrup

BACKGROUND: Pulmonary hypertension (PH) is a serious complication to interstitial lung disease (ILD) and has a poor prognosis. PH is often diagnosed by screening with echocardiography followed by right heart catheterisation. A previous study has shown that a value of NT-pro-brain natriuretic peptide (NT-proBNP) <95 ng/l could be used to rule out PH in patients with ILD.

AIM: To evaluate this rule-out test for PH in a new cohort of incident patients with ILD.

METHODS: An established database with data from 148 consecutive patients referred from January 2012 to October 2014 was used to identify patients and obtain data from echocardiography, NT-proBNP, diagnosis and lung function. Signs of PH on echocardiography were defined as a tricuspid pressure gradient (TR) ≥40 mmHg, decreased right ventricular systolic function or dilatation. Sensitivity, specificity, negative predictive value (NPV) and positive predictive value (PPV) of NT-proBNP >95 ng/l for signs of PH on echocardiography were calculated. The study was approved by the Danish Health Authority.

RESULTS: In 118 patients, data from both echocardiography and measurements of NT-proBNP were available. Eleven of these were screened positive for PH on echocardiography. Sensitivity, specificity, NPV and PPV of NT-proBNP <95 ng/l for PH were 100, 44, 16 and 100%, respectively. Furthermore, no patients with left heart failure as the cause of dyspnoea were missed using this cut-off value.

CONCLUSION: NT-proBNP <95 ng/l precludes a positive echocardiographic screen for PH in ILD patients at referral for diagnostic workup.

Original languageEnglish
JournalClinical Respiratory Journal
Volume3
Pages (from-to)32027
ISSN1752-6981
Publication statusPublished - 2016

    Research areas

  • Journal Article

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