排序方式: 共有16条查询结果,搜索用时 171 毫秒
11.
Kavitha M. Chinnaiyan MD FACC FSCCT Gilbert L. Raff MD FACC FSCCT Karthik Ananthasubramaniam MD FRCP FACC FASE FASNC 《Journal of nuclear cardiology》2012,19(4):649-657
Coronary CT angiography (CCTA) has matured to be a fast noninvasive imaging test in the evaluation of coronary artery disease (CAD). It has demonstrated excellent accuracy for defining the presence and the severity of luminal coronary artery stenoses and is probably the best noninvasive test to reliably exclude atherosclerotic coronary disease. Furthermore, accumulating CCTA data indicate that it can identify individuals at risk for all-cause mortality. It is also well known that despite the wealth of data regarding diagnostic and prognostic values of stress testing in CAD, up to 10% of stress imaging studies are considered inconclusive, leading to subsequent invasive coronary angiography for definitive diagnosis often with negative results. Moreover, recent data indicate that up to 30 % of patients undergoing angiography have no significant CAD despite a majority of them having had a prior stress test. Whether CCTA can serve as a cost-effective methodology to invasive angiography has been a source of active research. In this context, we will discuss the implications of the recently published data from the Advanced Cardiovascular Imaging Consortium registry looking at the use of CCTA after stress testing in Michigan. 相似文献
12.
Endovascular closure of thoracic aortic pseudoaneurysms: A combined device occlusion and coil embolization technique in patients unsuitable for surgery or stenting
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13.
Justin Gould MBBS PhD Baldeep S. Sidhu BM Benjamin J. Sieniewicz MBChB PhD Bradley Porter MBChB PhD Angela W. C. Lee PhD Orod Razeghi PhD Jonathan M. Behar MBBS PhD Vishal Mehta MBBS Mark K. Elliott MBBS Daniel Toth PhD Ulrike Haberland PhD Reza Razavi MD Ronak Rajani MD FSCCT Steven Niederer DPhil Christopher A. Rinaldi MD FHRS 《Journal of cardiovascular electrophysiology》2021,32(3):802-812
14.
The Relationship Between Left Ventricular Wall Thickness,Myocardial Shortening,and Ejection Fraction in Hypertensive Heart Disease: Insights From Cardiac Magnetic Resonance Imaging
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Stephen Rohan BSc Amardeep Ghosh Dastidar MBBS MRCP Adam Trickey MSc Gergely Szantho MD MRCP Laura E. K. Ratcliffe BSc MBBS MRCP Amy E. Burchell MA BM BCh MRCP Emma C. Hart BSc PhD Chiara Bucciarelli‐Ducci MD PhD FESC FRCP Mark C. K. Hamilton MBChB MRCP FRCR Angus K. Nightingale MA MB BChir FRCP MD Julian F. R. Paton BSc PhD Nathan E. Manghat MBChB MRCP FRCR MD FSCCT David H. MacIver MBBS MD FRCP FESC 《Journal of clinical hypertension (Greenwich, Conn.)》2016,18(11):1119-1127
Hypertensive heart disease is often associated with a preserved left ventricular ejection fraction despite impaired myocardial shortening. The authors investigated this paradox in 55 hypertensive patients (52±13 years, 58% male) and 32 age‐ and sex‐matched normotensive control patients (49±11 years, 56% male) who underwent cardiac magnetic resonance imaging at 1.5T. Long‐axis shortening (R=0.62), midwall fractional shortening (R=0.68), and radial strain (R=0.48) all decreased (P<.001) as end‐diastolic wall thickness increased. However, absolute wall thickening (defined as end‐systolic minus end‐diastolic wall thickness) was maintained, despite the reduced myocardial shortening. Absolute wall thickening correlated with ejection fraction (R=0.70, P<.0001). In multiple linear regression analysis, increasing wall thickness by 1 mm independently increased ejection fraction by 3.43 percentage points (adjusted β‐coefficient: 3.43 [2.60–4.26], P<.0001). Increasing end‐diastolic wall thickness augments ejection fraction through preservation of absolute wall thickening. Left ventricular ejection fraction should not be used in patients with hypertensive heart disease without correction for degree of hypertrophy. 相似文献
15.
Cardiac magnetic resonance imaging provides new insight into hypertensive heart disease—a reply
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Stephen Rohan BSc Amardeep Ghosh Dastidar MBBS MRCP Adam Trickey MSc Gergely Szantho MD MRCP Laura E. K. Ratcliffe BSc MBBS MRCP Amy E. Burchell MA BM BCh MRCP Emma C. Hart BSc PhD Chiara Bucciarelli‐Ducci MD PhD FESC FRCP Mark C. K. Hamilton MBChB MRCP FRCR Angus K. Nightingale MA MB BChir FRCP MD Julian F. R. Paton BSc PhD Nathan E. Manghat MBChB MRCP FRCR MD FSCCT David H. MacIver MBBS MD FRCP FESC 《Journal of clinical hypertension (Greenwich, Conn.)》2017,19(3):335-336
16.
William Thomas MBBS GradDipSurgAnat GradCertClinUS Jonathan Henry MBChB MClinUS CCPU AFRACMA FACEM Jay Ee Chew MD Manuja Premaratne MBBS FRACP FSCCT FCSANZ Gabriel Blecher MBBS PGradDipMan MSc CCPU FACEM Darsim L Haji MBChB PhD PGradDipCritCareEcho FACEM 《Emergency medicine Australasia : EMA》2023,35(5):720-730
Point-of-care ultrasound (POCUS) is becoming ubiquitous in emergency medicine. POCUS for abdominal aortic aneurysm is well established in practice. The thoracic aorta can also be assessed by POCUS for dissection and aneurysm and transthoracic echocardiography is endorsed by international guidelines as an initial test for thoracic aortic pathologies. A systematic search of Ovid Medline, PubMed, EMBASE, SCOPUS and Web of Science from January 2000 to August 2022 identified four studies evaluating diagnostic accuracy of emergency physician POCUS for thoracic aortic dissection (TAD) and five studies for thoracic aortic aneurysm (TAA). Study designs were heterogeneous including differing diagnostic criteria for aortic pathology. Convenience recruitment was frequent in prospective studies. Sensitivity and specificity ranges for studies of TAD were 41–91% and 94–100%, respectively when an intimal flap was seen. Sensitivity and specificity ranges for studies of thoracic aorta dilation >40 mm were 50–100% and 93–100%, respectively; for >45 mm ranges were 64–65% and 95–99%. Literature review identified that POCUS is specific for TAD and TAA. POCUS reduces the time to diagnosis of thoracic aortic pathology; however, it remains insensitive and cannot be recommended as a stand-alone rule-out test. We suggest that detection of thoracic aorta dilation >40 mm by POCUS at any site increases the suspicion of serious aortic pathology. Studies incorporating algorithmic use of POCUS, Aortic Dissection Detection Risk Score and D-dimer as decision tools are promising and may improve current ED practices. Further research is warranted in this rapidly evolving field. 相似文献