Circulation. Cardiovascular imaging
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Circ Cardiovasc Imaging · Mar 2015
Multicenter Study Observational StudyUsefulness of global left ventricular longitudinal strain for risk stratification in low ejection fraction, low-gradient aortic stenosis: results from the multicenter True or Pseudo-Severe Aortic Stenosis study.
The objective of this study was to examine the impact of left ventricular (LV) global longitudinal strain (GLS) measured at rest and at dobutamine stress echocardiography on the outcome of patients with low LV ejection fraction and low-gradient aortic stenosis. ⋯ http://www.clinicaltrials.gov. Unique identifier: NCT01835028.
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Circ Cardiovasc Imaging · Mar 2015
Randomized Controlled Trial Multicenter StudyUse of coronary artery calcium scanning beyond coronary computed tomographic angiography in the emergency department evaluation for acute chest pain: the ROMICAT II trial.
Whether a coronary artery calcium (CAC) scan provides added value to coronary computed tomographic angiography (CCTA) in emergency department patients with acute chest pain remains unsettled. We sought to determine the value of CAC scan in patients with acute chest pain undergoing CCTA. ⋯ http://www.clinicaltrials.gov. Unique identifier: NCT01084239.
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Circ Cardiovasc Imaging · Mar 2015
Multicenter Study Comparative Study Pragmatic Clinical TrialDetection of significant coronary artery disease by noninvasive anatomical and functional imaging.
The choice of imaging techniques in patients with suspected coronary artery disease (CAD) varies between countries, regions, and hospitals. This prospective, multicenter, comparative effectiveness study was designed to assess the relative accuracy of commonly used imaging techniques for identifying patients with significant CAD. ⋯ http://www.clinicaltrials.gov. Unique identifier: NCT00979199.
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Circ Cardiovasc Imaging · Mar 2015
Comparative Study Observational StudyEarly resting myocardial computed tomography perfusion for the detection of acute coronary syndrome in patients with coronary artery disease.
Acute rest single-photon emission computed tomography-myocardial perfusion imaging (SPECT-MPI) has high predictive value for acute coronary syndrome (ACS) in emergency department patients. Prior studies have shown excellent agreement between rest/stress computed tomography perfusion (CTP) and SPECT-MPI, but the value of resting CTP (rCTP) in acute chest pain triage remains unclear. We sought to determine the diagnostic accuracy of early rCTP, incremental value beyond obstructive coronary artery disease (CAD; ≥50% stenosis), and compared early rCTP to late stress SPECT-MPI in patients with CAD presenting with suspicion of ACS to the emergency department. ⋯ http://www.clinicaltrials.gov. Unique identifier: NCT00990262.
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Circ Cardiovasc Imaging · Mar 2015
Assessment of perioperative cardiac risk of patients undergoing noncardiac surgery using coronary computed tomographic angiography.
The appropriate indication for coronary computed tomographic angiography (CTA) as a part of preoperative evaluation has not been defined yet. We investigated the value of coronary CTA in patients undergoing noncardiac surgery. ⋯ Addition of coronary CTA to clinical risk improved perioperative risk stratification. Absence of significant coronary CTA findings conferred low PMCE risk with high specificity and negative predictive value regardless of clinical risk. Coronary CTA may improve perioperative risk stratification in patients undergoing noncardiac surgery.