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Cardiac Diagnostics and Imaging
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Your search returned 17 results
from the time period: last 30 days.
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Heart rhythm
Cardiac magnetic resonance imaging in patients with non-conditional cardiac implantable devices: good quality images besides safety are essential..
Purpose To compare the diagnostic accuracy of different computed tomographic (CT) fractional flow reserve (FFR) algorithms for vessels with intermediate stenosis. Materials and Methods This cross-sectional HIPAA-compliant and human research committee-approved study applied a four-step CT FFR algorithm in 61 patients (mean age, 69 years ± 10; age range, 29-89 years) with a lesion of intermediate-diameter stenosis (25%-69%) at CT angiography who underwent FFR measurement within 90 days. The per-lesion diagnostic performance of CT FFR was tested for three different approaches to estimate blood flow distribution for CT FFR calculation. The first two, the Murray law and the Huo-Kassab rule, used coronary anatomy; the third used contrast material opacification gradients. CT FFR algorithms and CT angiography percentage diameter stenosis (DS) measurements were compared by using the area under the receiver operating characteristic curve (AUC) to detect FFRs of 0.8 or lower. Results Twenty-five lesions (41%) had FFRs of 0.8 or lower. The AUC of CT FFR determination by using contrast material gradients (AUC = 0.953) was significantly higher than that of the Huo-Kassab (AUC = 0.882, P = .043) and Murray law models (AUC = 0.871, P = .033). All three AUCs were higher than that for 50% or greater DS at CT angiography (AUC = 0.596, P < .001). Correlation of CT FFR with FFR was highest for gradients (Spearman ? = 0.80), followed by the Huo-Kassab rule ( ? = 0.68) and Murray law ( ? = 0.67) models. All CT FFR algorithms had small biases, ranging from -0.015 (Murray) to -0.049 (Huo-Kassab). Limits of agreement were narrowest for gradients (-0.182, 0.147), followed by the Huo-Kassab rule (-0.246, 0.149) and the Murray law (-0.285, 0.256) models. Conclusion Clinicians can perform CT FFR by using a four-step approach on site to accurately detect hemodynamically significant intermediate-stenosis lesions. Estimating blood flow distribution by using coronary contrast opacification variations may improve CT FFR accuracy. (©) RSNA, 2017 Online supplemental material is available for this article.
Pathologic Constriction (4), more mentions
Whereas echocardiographic examination is a central component of diagnosis, alone it is ... Echocardiographic examination confirms the size, location, and other characteristics of the ... Several echocardiographic features support the hemodynamic diagnosis of tamponade including early diastolic ... Echocardiographic examination then supports decisions around the early treatment and drainage ... Keyword: goal-directed echocardiography.
Cardiovascular Diseases (1)
Cardiac Tamponade (5), Tachycardia (1), Cardiogenic Shock (1), more mentions
Purpose To assess concordance and relative prognostic utility between central core laboratory and local site interpretation for significant coronary artery disease (CAD) and cardiovascular events. Materials and Methods In the Prospective Multicenter Imaging Study for Evaluation of Chest Pain (PROMISE) trial, readers at 193 North American sites interpreted coronary computed tomographic (CT) angiography as part of the clinical evaluation of stable chest pain. Readers at a central core laboratory also interpreted CT angiography blinded to clinical data, site interpretation, and outcomes. Significant CAD was defined as stenosis greater than or equal to 50%; cardiovascular events were defined as a composite of cardiovascular death or myocardial infarction. Results In 4347 patients (51.8% women; mean age ± standard deviation, 60.4 years ± 8.2), core laboratory and site interpretations were discordant in 16% (683 of 4347), most commonly because of a finding of significant CAD by site but not by core laboratory interpretation (80%, 544 of 683). Overall, core laboratory interpretation resulted in 41% fewer patients being reported as having significant CAD (14%, 595 of 4347 vs 23%, 1000 of 4347; P < .001). Over a median follow-up period of 25 months, 1.3% (57 of 4347) sustained myocardial infarction or cardiovascular death. The C statistic for future myocardial infarction or cardiovascular death was 0.61 (95% confidence interval [CI]: 0.54, 0.68) for the core laboratory and 0.63 (95% CI: 0.56, 0.70) for the sites. Conclusion Compared with interpretation by readers at 193 North American sites, standardized core laboratory interpretation classified 41% fewer patients as having significant CAD. © RSNA, 2017 Online supplemental material is available for this article. Clinical trial registration no. NCT01174550.
Myocardial Infarction (3), Pathologic Constriction (1), Coronary Artery Disease (1), more mentions
JACC. Cardiovascular interventions 
AbstractText: The aim of this study was to examine the current practice and use of transfemoral approach (TFA) for coronary angiography and intervention AbstractText: Wide variability exists in TFA techniques for coronary procedures AbstractText: The authors developed a survey instrument that was distributed via e-mail lists from professional societies ...
Heart (British Cardiac Society)
AbstractText: The National Institute for Health and Care Excellence (NICE) clinical guidelines 'chest pain of recent onset: assessment and diagnosis' (update 2016) state CT coronary angiography (CTCA) should be offered as the first-line investigation for patients with stable chest pain. However, the current provision in the UK is unknown.
Cardiovascular Diseases (1)
Coronary Artery Disease (1), Stable Angina (1), Coronary Disease (1), more mentions
Annals of internal medicine
Comparative Effectiveness of Routine Invasive Coronary Angiography for Managing Unstable Angina..
Unstable Angina (2), more mentions
Annals of internal medicine
Comparative Effectiveness of Routine Invasive Coronary Angiography for Managing Unstable Angina..
Unstable Angina (2), more mentions
The American journal of cardiology
... of high-risk obstructive coronary artery disease (CAD) on diagnostic coronary angiography... testing for the evaluation of chest pain and underwent diagnostic coronary angiography within the subsequent 3 months... the 412 patients, 105 (25%) had high-risk CAD on coronary angiography... This supports the strategy for provisional use of myocardial perfusion imaging in patients with low functional capacity and/or abnormal stress ...
Pathologic Constriction (3), Coronary Artery Disease (2), more mentions
... NIV) or CPAP on cardiac structure and function assessed by echocardiography AbstractText: We performed a secondary analysis of the data from ... lifestyle modification (control group, n=70) on structural and functional echocardiographic changes AbstractText: Conventional transthoracic two-dimensional and Doppler echocardiograms were ... Echocardiographers at each site were blinded to the treatment arms.
Cardiovascular Diseases (3), Anti-Obesity and Weight Loss (2)
Pulmonary Hypertension (3), Left Ventricular Hypertrophy (3), Obesity Hypoventilation Syndrome (2), more mentions
Echocardiographic Detection of Latent Rheumatic Heart Disease: A Pandora's Box?.
Cardiovascular Diseases (2)
Rheumatic Heart Disease (2), more mentions
The American journal of cardiology
We examined the association between global cardiac calcification quantified by a previously validated echocardiographic calcium score (eCS) with the severity of mitral stenosis (MS) and coronary artery disease (CAD ... 147 patients (mean age 81 ± 9 years, 50% male), 81 patients (55%) were determined by echocardiography to have some degree of MS.
Aortic Valve Stenosis (3), Mitral Valve Stenosis (2), Coronary Artery Disease (2), more mentions
The Journal of thoracic and cardiovascular surgery
Echocardiographic correlates to right ventricular dysfunction and failure..
Ventricular Dysfunction (2), more mentions
Canadian journal of anaesthesia = Journal canadien d'anesthesie
AbstractText: The use of transesophageal echocardiography (TEE) has evolved to include patients undergoing high-risk non-cardiac procedures and patients with significant cardiac disease undergoing non-cardiac ... Transesophageal echocardiography examination allows assessment of volume status, ventricular function, diagnosis of gross valvular pathology and pericardial tamponade, as well as close monitoring ...
Cardiovascular Diseases (1)
Heart Diseases (3), Hypertrophic Cardiomyopathy (1), Cardiac Tamponade (1), more mentions
Critical care (London, England) 
Abstract: Critical care echocardiography is developing rapidly with an increasing number of specialists now performing comprehensive studies using Doppler and other advanced techniques... Keyword: Echocardiography. Keyword: Intensive care.
Echocardiography is the primary imaging modality for diagnosing cardiac conditions... ultrasound equipment that is compact and battery operated, and handheld echocardiography can be readily performed at the point of care with ... As a consequence, the use of handheld echocardiography is on the rise even among nonechocardiographers (intensivists, emergency care ... and selecting patients for appropriate downstream diagnostic testing including comprehensive echocardiography.
The American journal of cardiology
Harvey Feigenbaum, MD, and the Creation of Clinical Echocardiography: A Conversation With Barry J. Maron, MD..