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Diagnostic characteristics of combining phonocardiographic third heart sound and systolic time intervals for the prediction of left ventricular dysfunction.

Publication ,  Journal Article
Shapiro, M; Moyers, B; Marcus, GM; Gerber, IL; McKeown, BH; Vessey, JC; Jordan, MV; Huddleston, M; Foster, E; Chatterjee, K; Michaels, AD
Published in: J Card Fail
February 2007

BACKGROUND: The third heart sound (S3) and systolic time intervals (STIs) are validated clinical indicators of left ventricular (LV) dysfunction. We investigated the test characteristics of a combined score summarizing S3 and STI results for predicting LV dysfunction. METHODS AND RESULTS: A total of 81 adults underwent computerized phonelectrocardiography for S3 and STI (Audicor, Inovise Medical Inc), cardiac catheterization for LV end-diastolic pressure (LVEDP), echocardiography for LV ejection fraction (LVEF), and B-type natriuretic peptide (BNP) testing. LV dysfunction was defined as both an LVEDP >15 mm Hg and LVEF <50%. The STI measured was the electromechanical activation time (EMAT) divided by LV systolic time (LVST). Z-scores for the S3 confidence score and EMAT/LVST were summed to generate the LV dysfunction index. The LV dysfunction index had a correlation coefficient of 0.38 for LVEDP (P = .0003), -0.53 for LVEF (P < .0001), and 0.35 for BNP (P = .0008). This index had a receiver operative curve c-statistic of 0.89 for diagnosis of LV dysfunction; a cutoff >1.87 yielded 72% sensitivity, 92% specificity, 9.0 positive likelihood ratio, and 88% accuracy. CONCLUSIONS: In this preliminary study, the LV dysfunction index combined S3 and STI data from noninvasive electrophonocardiography, and yielded superior test characteristics compared to the individual tests for the diagnosis of LV dysfunction.

Duke Scholars

Published In

J Card Fail

DOI

EISSN

1532-8414

Publication Date

February 2007

Volume

13

Issue

1

Start / End Page

18 / 24

Location

United States

Related Subject Headings

  • Ventricular Dysfunction, Left
  • Time Factors
  • Systole
  • Predictive Value of Tests
  • Phonocardiography
  • Natriuretic Peptide, Brain
  • Middle Aged
  • Male
  • Humans
  • Heart Sounds
 

Citation

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Shapiro, M., Moyers, B., Marcus, G. M., Gerber, I. L., McKeown, B. H., Vessey, J. C., … Michaels, A. D. (2007). Diagnostic characteristics of combining phonocardiographic third heart sound and systolic time intervals for the prediction of left ventricular dysfunction. J Card Fail, 13(1), 18–24. https://doi.org/10.1016/j.cardfail.2006.09.009
Shapiro, Mia, Brian Moyers, Gregory M. Marcus, Ivor L. Gerber, Barry H. McKeown, Joshua C. Vessey, Mark V. Jordan, et al. “Diagnostic characteristics of combining phonocardiographic third heart sound and systolic time intervals for the prediction of left ventricular dysfunction.J Card Fail 13, no. 1 (February 2007): 18–24. https://doi.org/10.1016/j.cardfail.2006.09.009.
Shapiro M, Moyers B, Marcus GM, Gerber IL, McKeown BH, Vessey JC, et al. Diagnostic characteristics of combining phonocardiographic third heart sound and systolic time intervals for the prediction of left ventricular dysfunction. J Card Fail. 2007 Feb;13(1):18–24.
Shapiro, Mia, et al. “Diagnostic characteristics of combining phonocardiographic third heart sound and systolic time intervals for the prediction of left ventricular dysfunction.J Card Fail, vol. 13, no. 1, Feb. 2007, pp. 18–24. Pubmed, doi:10.1016/j.cardfail.2006.09.009.
Shapiro M, Moyers B, Marcus GM, Gerber IL, McKeown BH, Vessey JC, Jordan MV, Huddleston M, Foster E, Chatterjee K, Michaels AD. Diagnostic characteristics of combining phonocardiographic third heart sound and systolic time intervals for the prediction of left ventricular dysfunction. J Card Fail. 2007 Feb;13(1):18–24.
Journal cover image

Published In

J Card Fail

DOI

EISSN

1532-8414

Publication Date

February 2007

Volume

13

Issue

1

Start / End Page

18 / 24

Location

United States

Related Subject Headings

  • Ventricular Dysfunction, Left
  • Time Factors
  • Systole
  • Predictive Value of Tests
  • Phonocardiography
  • Natriuretic Peptide, Brain
  • Middle Aged
  • Male
  • Humans
  • Heart Sounds