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Natural History of Patients With Ischemia and No Obstructive Coronary Artery Disease: The CIAO-ISCHEMIA Study.

Publication ,  Journal Article
Reynolds, HR; Picard, MH; Spertus, JA; Peteiro, J; Lopez Sendon, JL; Senior, R; El-Hajjar, MC; Celutkiene, J; Shapiro, MD; Pellikka, PA; Li, Y ...
Published in: Circulation
September 28, 2021

BACKGROUND: Ischemia with no obstructive coronary artery disease (INOCA) is common and has an adverse prognosis. We set out to describe the natural history of symptoms and ischemia in INOCA. METHODS: CIAO-ISCHEMIA (Changes in Ischemia and Angina over One Year in ISCHEMIA Trial Screen Failures With INOCA) was an international cohort study conducted from 2014 to 2019 involving angina assessments (Seattle Angina Questionnaire) and stress echocardiograms 1 year apart. This was an ancillary study that included patients with a history of angina who were not randomly assigned in the ISCHEMIA trial. Stress-induced wall motion abnormalities were determined by an echocardiographic core laboratory blinded to symptoms, coronary artery disease status, and test timing. Medical therapy was at the discretion of treating physicians. The primary outcome was the correlation between the changes in the Seattle Angina Questionnaire angina frequency score and changes in echocardiographic ischemia. We also analyzed predictors of 1-year changes in both angina and ischemia, and we compared CIAO participants with ISCHEMIA participants with obstructive coronary artery disease who had stress echocardiography before enrollment, as CIAO participants did. RESULTS: INOCA participants in CIAO were more often female (66% of 208 versus 26% of 865 ISCHEMIA participants with obstructive coronary artery disease, P<0.001), but the magnitude of ischemia was similar (median 4 ischemic segments [interquartile range, 3-5] both groups). Ischemia and angina were not significantly correlated at enrollment in CIAO (P=0.46) or ISCHEMIA stress echocardiography participants (P=0.35). At 1 year, the stress echocardiogram was normal in half of CIAO participants, and 23% had moderate or severe ischemia (≥3 ischemic segments). Angina improved in 43% and worsened in 14%. Change in ischemia over 1 year was not significantly correlated with change in angina (ρ=0.029). CONCLUSIONS: Improvement in ischemia and angina were common in INOCA but not correlated. Our INOCA cohort had a degree of inducible wall motion abnormalities similar to concurrently enrolled ISCHEMIA participants with obstructive coronary artery disease. Our results highlight the complex nature of INOCA pathophysiology and the multifactorial nature of angina. Registration: URL: https://www.clinicaltrials.gov. Unique identifier: NCT02347215.

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Published In

Circulation

DOI

EISSN

1524-4539

Publication Date

September 28, 2021

Volume

144

Issue

13

Start / End Page

1008 / 1023

Location

United States

Related Subject Headings

  • Natural History
  • Middle Aged
  • Male
  • Ischemia
  • Humans
  • Female
  • Coronary Artery Disease
  • Cardiovascular System & Hematology
  • Aged
  • 4207 Sports science and exercise
 

Citation

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Reynolds, H. R., Picard, M. H., Spertus, J. A., Peteiro, J., Lopez Sendon, J. L., Senior, R., … Hochman, J. S. (2021). Natural History of Patients With Ischemia and No Obstructive Coronary Artery Disease: The CIAO-ISCHEMIA Study. Circulation, 144(13), 1008–1023. https://doi.org/10.1161/CIRCULATIONAHA.120.046791
Reynolds, Harmony R., Michael H. Picard, John A. Spertus, Jesus Peteiro, Jose Luis Lopez Sendon, Roxy Senior, Mohammad C. El-Hajjar, et al. “Natural History of Patients With Ischemia and No Obstructive Coronary Artery Disease: The CIAO-ISCHEMIA Study.Circulation 144, no. 13 (September 28, 2021): 1008–23. https://doi.org/10.1161/CIRCULATIONAHA.120.046791.
Reynolds HR, Picard MH, Spertus JA, Peteiro J, Lopez Sendon JL, Senior R, et al. Natural History of Patients With Ischemia and No Obstructive Coronary Artery Disease: The CIAO-ISCHEMIA Study. Circulation. 2021 Sep 28;144(13):1008–23.
Reynolds, Harmony R., et al. “Natural History of Patients With Ischemia and No Obstructive Coronary Artery Disease: The CIAO-ISCHEMIA Study.Circulation, vol. 144, no. 13, Sept. 2021, pp. 1008–23. Pubmed, doi:10.1161/CIRCULATIONAHA.120.046791.
Reynolds HR, Picard MH, Spertus JA, Peteiro J, Lopez Sendon JL, Senior R, El-Hajjar MC, Celutkiene J, Shapiro MD, Pellikka PA, Kunichoff DF, Anthopolos R, Alfakih K, Abdul-Nour K, Khouri M, Bershtein L, De Belder M, Poh KK, Beltrame JF, Min JK, Fleg JL, Li Y, Maron DJ, Hochman JS. Natural History of Patients With Ischemia and No Obstructive Coronary Artery Disease: The CIAO-ISCHEMIA Study. Circulation. 2021 Sep 28;144(13):1008–1023.

Published In

Circulation

DOI

EISSN

1524-4539

Publication Date

September 28, 2021

Volume

144

Issue

13

Start / End Page

1008 / 1023

Location

United States

Related Subject Headings

  • Natural History
  • Middle Aged
  • Male
  • Ischemia
  • Humans
  • Female
  • Coronary Artery Disease
  • Cardiovascular System & Hematology
  • Aged
  • 4207 Sports science and exercise