ArticleJournal of nuclear cardiology : official publication of the American Society of Nuclear Cardiology2018
Mechanical dyssynchrony according to validated cut-off values using gated SPECT myocardial perfusion imaging.
Article in Journal of nuclear cardiology : official publication of the American Society of Nuclear Cardiology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- The feasibility ofQuantitative imaging in medicine and surgery · 2022Article
- Mechanical dyssynchrony: How do we measure it, what it means, and what we can do about it.Journal of nuclear cardiology : official publication of the American Society of Nuclear Cardiology · 2021Article
- Perspective and future direction of intraventricular mechanical dyssynchrony assessment.Journal of nuclear cardiology : official publication of the American Society of Nuclear Cardiology · 2021Article
- Feasible Classified Models for Parkinson Disease fromSensors (Basel, Switzerland) · 2019Article
- Mechanical dyssynchrony according to validated cut-off values using gated SPECT myocardial perfusion imaging.Journal of nuclear cardiology : official publication of the American Society of Nuclear Cardiology · 2018Article
- Automated Classification of Severity in Cardiac Dyssynchrony Merging Clinical Data and Mechanical Descriptors.Computational and mathematical methods in medicine · 2017Article
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5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundThe aim of this study was to establish different degrees of mechanical dyssynchrony according to validated cut-off (CO) values of myocardial perfusion gated SPECT phase analysis parameters (SD, standard deviation; B, bandwidth; S, skewness; K, kurtosis).
methodsUsing Emory Cardiac Toolbox™, we prospectively analyzed 408 patients (mean age 64.1 years, 26.7% female), divided into a control group of 150 normal subjects and a validation group of 258 patients (left bundle branch block: 17.8%, right bundle branch block: 8.9%. atrial fibrillation: 16.3%, coronary revascularization: 30%, dilated cardiomyopathy: 7.4%. valvulopathies: 2.7%, ischemic test: 45.3%) with ischemic and non-ischemic cardiac diseases, by means of phase analysis.
resultsAgreement of CO values (SD > 18.4°; B > 51°; S ≤ 3.2; K ≤ 9.3) used to discriminate between normal subjects and patients was strong (c-statistic 0.9; 95% CI 0.98-0.99). Four degrees of dyssynchrony were found according to the number of abnormal phase parameters. All patients with mechanical and electrical criteria for cardiac resynchronization therapy (CCRT) (n: 82) had Grade 2 to 4 (two to four abnormal phase parameters). Agreement of CO values (SD > 40.2°; B > 132°; S ≤ 2.3; K ≤ 4.6) used to discriminate between patients with and without CCRT was strong (c-statistic 0.8; 95% CI 0.79-0.87) but 12% of patients with CCRT did not have any of these abnormal phase parameters.
conclusionsThe discriminatory capacity of gated SPECT phase analysis parameters between normal subjects and patients, and between patients with and without CCRT, is very good, making it possible to define different degrees of mechanical dyssynchrony.
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