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Sex-Specific Computed Tomography Coronary Plaque Characterization and Risk of Myocardial Infarction

  • Michelle C. Williams (Lead / Corresponding author)
  • , Jacek Kwiecinski
  • , Mhairi Doris
  • , Priscilla McElhinney
  • , Michelle S. D’Souza
  • , Sebastien Cadet
  • , Philip D. Adamson
  • , Alastair J. Moss
  • , Shirjel Alam
  • , Amanda Hunter
  • , Anoop S. V. Shah
  • , Nicholas L. Mills
  • , Tania Pawade
  • , Chengjia Wang
  • , Jonathan R. Weir Mccall
  • , Michael Bonnici-Mallia
  • , Christopher Murrills
  • , Giles Roditi
  • , Edwin J. R. Van Beek
  • , Leslee J. Shaw
  • Edward D. Nicol, Daniel S. Berman, Piotr J. Slomka, David E. Newby, Marc R. Dweck, Damini Dey

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Objectives: This study was designed to investigate whether coronary computed tomography angiography assessments of coronary plaque might explain differences in the prognosis of men and women presenting with chest pain. Background: Important sex differences exist in coronary artery disease. Women presenting with chest pain have different risk factors, symptoms, prevalence of coronary artery disease and prognosis compared to men.

    Methods: Within a multicenter randomized controlled trial, we explored sex differences in stenosis, adverse plaque characteristics (positive remodeling, low-attenuation plaque, spotty calcification, or napkin ring sign) and quantitative assessment of total, calcified, noncalcified and low-attenuation plaque burden.

    Results: Of the 1,769 participants who underwent coronary computed tomography angiography, 772 (43%) were female. Women were more likely to have normal coronary arteries and less likely to have adverse plaque characteristics (p < 0.001 for all). They had lower total, calcified, noncalcified, and low-attenuation plaque burdens (p < 0.001 for all) and were less likely to have a low-attenuation plaque burden >4% (41% vs. 59%; p < 0.001). Over a median follow-up of 4.7 years, myocardial infarction (MI) occurred in 11 women (1.4%) and 30 men (3%). In those who had MI, women had similar total, noncalcified, and low-attenuation plaque burdens as men, but men had higher calcified plaque burden. Low-attenuation plaque burden predicted MI (hazard ratio: 1.60; 95% confidence interval: 1.10 to 2.34; p = 0.015), independent of calcium score, obstructive disease, cardiovascular risk score, and sex.

    Conclusions: Women presenting with stable chest pain have less atherosclerotic plaque of all subtypes compared to men and a lower risk of subsequent MI. However, quantitative low-attenuation plaque is as strong a predictor of subsequent MI in women as in men. (Scottish Computed Tomography of the HEART Trial [SCOT-HEART]; NCT01149590).

    Original languageEnglish
    Pages (from-to)1804-1814
    Number of pages11
    JournalJACC: Cardiovascular Imaging
    Volume14
    Issue number9
    Early online date14 Apr 2021
    DOIs
    Publication statusPublished - Sept 2021

    Keywords

    • computed tomography
    • computed tomography coronary angiography
    • coronary artery disease
    • quantitative plaque analysis
    • sex

    ASJC Scopus subject areas

    • Radiology Nuclear Medicine and imaging
    • Cardiology and Cardiovascular Medicine

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