Lung ultrasound in acute heart failure: prevalence of pulmonary congestion and short- and long-term outcomes

Platz, E. et al. (2019) Lung ultrasound in acute heart failure: prevalence of pulmonary congestion and short- and long-term outcomes. JACC: Heart Failure, 7(10), pp. 849-858. (doi:10.1016/j.jchf.2019.07.008) (PMID:31582107)

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Abstract

Objectives: This study sought to assess the prevalence, changes in, and prognostic importance of B-lines, a pulmonary congestion measure by using a simplified lung ultrasonography (LUS) method in acute heart failure (AHF). Background: Pulmonary congestion is an important finding in AHF, but conventional methods for its detection are insensitive. Methods: In a 2-site, prospective, observational study, 4-zone LUS was performed early during hospitalization for AHF (LUS1) and at discharge (LUS2). B-lines were quantified off-line, blinded to clinical findings and outcomes, by a core laboratory. Results: Among 349 patients (median, 75 years of age; 59% men; mean ejection fraction 39%), the sum of B-lines in 4 zones ranged from 0 to 18 (LUS1). The risk of an adverse in-hospital event increased with rising number of B-lines on LUS1: the odds ratio for each B-line tertile was 1.82 (95% confidence interval [CI]: 1.14 to 2.88; p = 0.011). B-line count decreased from a median of 6 (LUS1) to 4 (LUS2; p < 0.001) over 6 days (median). In 132 patients with LUS2 images, the risk of HF hospitalization or all-cause death was greater in patients with a higher number of B-lines at discharge. This relationship was stronger closer to discharge: unadjusted hazard ratio (HR) at 60 days was 3.30 (95% CI: 1.52 to 7.17; p = 0.002); 2.94 at 90 days (95% CI: 1.46 to 5.93; p = 0.003); and 2.01 at 180 days (95% CI: 1.11 to 3.64; p = 0.021). The association between number of B-lines and short- and long-term outcomes persisted after adjusting for important clinical variables, including N-terminal pro–B-type natriuretic peptide. Conclusions: Pulmonary congestion using a simplified 4-zone LUS method was common in patients with AHF and improved with therapy. A higher number of B-lines at baseline and discharge identified patients at increased risk for adverse events.

Item Type:Articles
Additional Information:Supported by U.S. National Institutes of Health/National Heart, Lung and Blood Institute (NIH/NHLB) grant K23HL123533) (to Dr. Platz) and project grant PG/13/17/30050 (to Drs. Campbell and McMurray) from the British Heart Foundation.
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Docherty, Dr Kieran and Campbell, Dr Ross and McMurray, Professor John
Authors: Platz, E., Campbell, R. T., Claggett, B., Lewis, E. F., Groarke, J. D., Docherty, K. F., Lee, M. M.Y., Merz, A. A., Silverman, M., Swamy, V., Lindner, M., Rivero, J., Solomon, S. D., and McMurray, J. J.V.
College/School:College of Medical Veterinary and Life Sciences > Institute of Cardiovascular and Medical Sciences
Journal Name:JACC: Heart Failure
Publisher:Elsevier
ISSN:2213-1779
ISSN (Online):2213-1787
Published Online:30 September 2019

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
190616Palliative Care Needs in Patients with Heart FailureJohn McMurrayBritish Heart Foundation (BHF)PG/13/17/30050Institute of Cardiovascular & Medical Sciences