Simone Romano1, Benjamin Romer2, Kaleigh Evans2, Michael Trybula2, Chetan Shenoy3, Raymond Y Kwong4, Afshin Farzaneh-Far5. 1. Department of Medicine, University of Verona, Verona, Italy. 2. Division of Cardiology, Department of Medicine, University of Illinois at Chicago, Chicago, Illinois. 3. Division of Cardiology, Department of Medicine, University of Minnesota, Minneapolis, Minnesota. 4. Division of Cardiology, Department of Medicine, Brigham & Women's Hospital, Harvard Medical School, Boston, Massachusetts. 5. Division of Cardiology, Department of Medicine, University of Illinois at Chicago, Chicago, Illinois; Division of Cardiology, Department of Medicine, Duke University, Durham, North Carolina. Electronic address: afshin@uic.edu.
Abstract
OBJECTIVES: The purpose of this study was to determine the prognostic value of feature-tracking global longitudinal strain (GLS) measured during vasodilator stress cardiac magnetic resonance (CMR) imaging. BACKGROUND: Prior studies have suggested that blunted myocardial strain during dobutamine stress echocardiography may be associated with adverse prognosis. Recent developments in CMR feature-tracking techniques now allow assessment of strain in clinical practice using standard cine images without specialized pulse sequences or complex post-processing. Whether feature-tracking GLS measured during vasodilator stress provides independent and incremental prognostic data is unclear. METHODS: Consecutive patients undergoing stress perfusion CMR were prospectively enrolled (n = 535). Feature-tracking stress GLS was measured immediately after regadenoson perfusion. Patients were followed for major adverse cardiac events (MACE): death, nonfatal myocardial infarction, heart failure hospitalization, sustained ventricular tachycardia, and late revascularization. Cox proportional hazards regression modeling was used to examine the association between stress GLS and MACE. The incremental prognostic value of stress GLS was assessed in nested models. RESULTS: Over a median follow-up of 1.5 years, 82 patients experienced MACE. By Kaplan-Meier analysis, patients with stress GLS ≥ median (-19%) had significantly reduced event-free survival compared with those with stress GLS < median (log-rank p < 0.001). Stress GLS was significantly associated with risk of MACE after adjustment for clinical and imaging risk factors including ischemia, ejection fraction, and late gadolinium enhancement (hazard ratio: 1.267; p < 0.001). Addition of stress GLS into a model with clinical and imaging predictors resulted in significant increase in the C-index (from 0.80 to 0.85; p = 0.031) and a continuous net reclassification improvement of 0.898 (95% confidence interval: 0.565 to 1.124). CONCLUSIONS: Feature-tracking stress GLS measured during vasodilator stress CMR is an independent predictor of MACE in patients with known or suspected coronary artery disease, incremental to common clinical and imaging risk factors. These findings suggest a role for feature-tracking derived stress GLS in identifying patients at highest risk of adverse events following stress CMR.
OBJECTIVES: The purpose of this study was to determine the prognostic value of feature-tracking global longitudinal strain (GLS) measured during vasodilator stress cardiac magnetic resonance (CMR) imaging. BACKGROUND: Prior studies have suggested that blunted myocardial strain during dobutaminestress echocardiography may be associated with adverse prognosis. Recent developments in CMR feature-tracking techniques now allow assessment of strain in clinical practice using standard cine images without specialized pulse sequences or complex post-processing. Whether feature-tracking GLS measured during vasodilator stress provides independent and incremental prognostic data is unclear. METHODS: Consecutive patients undergoing stress perfusion CMR were prospectively enrolled (n = 535). Feature-tracking stress GLS was measured immediately after regadenoson perfusion. Patients were followed for major adverse cardiac events (MACE): death, nonfatal myocardial infarction, heart failure hospitalization, sustained ventricular tachycardia, and late revascularization. Cox proportional hazards regression modeling was used to examine the association between stress GLS and MACE. The incremental prognostic value of stress GLS was assessed in nested models. RESULTS: Over a median follow-up of 1.5 years, 82 patients experienced MACE. By Kaplan-Meier analysis, patients with stress GLS ≥ median (-19%) had significantly reduced event-free survival compared with those with stress GLS < median (log-rank p < 0.001). Stress GLS was significantly associated with risk of MACE after adjustment for clinical and imaging risk factors including ischemia, ejection fraction, and late gadolinium enhancement (hazard ratio: 1.267; p < 0.001). Addition of stress GLS into a model with clinical and imaging predictors resulted in significant increase in the C-index (from 0.80 to 0.85; p = 0.031) and a continuous net reclassification improvement of 0.898 (95% confidence interval: 0.565 to 1.124). CONCLUSIONS: Feature-tracking stress GLS measured during vasodilator stress CMR is an independent predictor of MACE in patients with known or suspected coronary artery disease, incremental to common clinical and imaging risk factors. These findings suggest a role for feature-tracking derived stress GLS in identifying patients at highest risk of adverse events following stress CMR.
Authors: Simone Romano; Robert M Judd; Raymond J Kim; John F Heitner; Dipan J Shah; Chetan Shenoy; Kaleigh Evans; Benjamin Romer; Pablo Salazar; Afshin Farzaneh-Far Journal: JACC Cardiovasc Imaging Date: 2019-11-11
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Authors: Daniel Overhoff; Uzair Ansari; Anna Hohneck; Erol Tülümen; Boris Rudic; Jürgen Kuschyk; Dirk Lossnitzer; Stefan Baumann; Matthias F Froelich; Stephan Waldeck; Ibrahim Akin; Martin Borggrefe; Stefan O Schoenberg; Theano Papavassiliu Journal: ESC Heart Fail Date: 2021-11-24