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. 2024 Jul 9;150(2):165-167.
doi: 10.1161/CIRCULATIONAHA.123.066980. Epub 2024 Jul 8.

Ischemia Severity, Coronary Artery Disease Extent, and Exercise Capacity in ISCHEMIA

Affiliations

Ischemia Severity, Coronary Artery Disease Extent, and Exercise Capacity in ISCHEMIA

Jerome L Fleg et al. Circulation. .
No abstract available

Keywords: coronary artery disease; exercise capacity; ischemia.

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Conflict of interest statement

Dr Fleg reports employment by the National Heart, Lung, and Blood Institute during the conduct of the study. Drs O’Brien, Berger, Kwong, and Maron and Z. Huang report grants from the National Heart, Lung, and Blood Institute during the conduct of the study. Dr Reynolds reports grants from the National Heart, Lung, and Blood Institute during the conduct of the study. She receives support from Abbott Vascular (donation of optical coherence tomography catheters for an unrelated research study) and Biotelemetry Inc (donation of telemetry monitors for an unrelated research study). Dr Reynolds is also a consultant for HeartFlow. Dr Chaitman reports grants from the National Heart, Lung, and Blood Institute, and personal fees from Merck, NovoNordisk, Sanofi, Lilly, Johnson and Johnson, Daiichi Sankyo, Tricida, Relypsa, Imbria, and Xylocor outside the submitted work. Dr Berman receives software royalties from Cedars-Sinai Medical Center outside the submitted work. Dr Min reports grants from the National Heart, Lung, and Blood Institute during the conduct of the study; other from Cleerly Inc, grants and other from GE Healthcare, and other from Arineta outside the submitted work. Dr Bangalore reports grants from the National Heart, Lung, and Blood Institute during the conduct of the study; grants and personal fees from Abbott Vascular; and personal fees from Biotronik, Pfizer, Amgen, and Reata outside the submitted work. Dr Hochman is principal investigator for the ISCHEMIA trial for which, in addition to support by the National Heart, Lung, and Blood Institute grant, devices and medications were provided by Abbott Vascular, Medtronic, Inc, Abbott Laboratories (formerly St Jude Medical, Inc), Royal Philips NV (formerly Volcano Corporation), Arbor Pharmaceuticals, LLC, AstraZeneca Pharmaceuticals, LP, Merck Sharp & Dohme Corp, and Omron Healthcare, Inc, and financial donations were provided by Arbor Pharmaceuticals LLC and AstraZeneca Pharmaceuticals LP. Dr Hochman is also the PI of ISCHEMIA-EXTEND. The other authors report no conflicts. The content of this article is solely the responsibility of the authors and does not necessarily represent the views of the National Heart, Lung, and Blood Institute, the National Institutes of Health, or the United States Department of Health and Human Services.

Figures

Figure 1:
Figure 1:. Relationship between ischemia severity, CAD extent, and peak exercise METs
Panel A. Incremental model information provided by ischemia severity and CAD extent over demographic and clinical variables to predict peak exercise METs in the 858 patients who underwent both nuclear or echo exercise imaging and CCTA Model 1: age and sex; Model 2: age and sex plus clinical variables (BMI, hypertension, diabetes mellitus, smoking status, prior MI, prior PCI/CABG, prior PAD, baseline eGFR, baseline SAQ summary score, NYHA class, use of anti-hypertensive medication, and hours of moderate physical activity in the past week by self-report); Model 3: variables in Model 2 plus exercise ischemia imaging and CCTA Panel B. Relationship between ischemia severity by nuclear or echo exercise imaging and peak METs in the subset of 259 patients reporting chest pain during the exercise test Panel C. Relationship between CAD extent, defined by number of coronary arteries with ≥50% stenosis on CCTA, and peak METs in the subset of 259 patients reporting chest pain during the exercise test

References

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