Angiography

2021 ◽  
pp. 57-60
Author(s):  
Matthew I. Tomey
Keyword(s):  
Coronary Artery ◽  
Coronary Angiography ◽  
Artery Bypass ◽  
Bypass Graft ◽  
Cleveland Clinic ◽  
Artery Bypass Graft ◽  
Selective Coronary Angiography ◽  
Coronary Ostia ◽  
Artery Disease

‘As an aid to diagnosis in ischaemic heart-disease’, Lancet editorialists wrote in 1966, coronary angiography ‘seems at present to offer little that cannot be more easily obtained by much simpler methods, such as good history-taking and electrocardiography’. Since its serendipitous origins at the Cleveland Clinic laboratory of Dr F. Mason Sones in 1958, selective coronary angiography has taken on central importance in the diagnosis of coronary artery disease and characterization of coronary anatomy prior to coronary artery bypass graft surgery. Performance has become simpler and safer, evolving from a brachial artery cut-down approach with stiff, large-calibre multipurpose catheters to percutaneous femoral, radial, and now ulnar approaches with softer, lower-profile catheters specially designed to atraumatically engage the coronary ostia.

scholarly journals Coronary Angiography Characteristics of Symptomatic Patients with Prior Coronary Artery Bypass Graft: A Descriptive Study

2019 ◽  
Vol 2019 ◽  
pp. 1-6
Author(s):  
Xiaolong Ma ◽  
Pengfei Chen ◽  
Yicheng Zhao ◽  
Caiwu Zeng ◽  
Meng Xin ◽  
...  
Keyword(s):  
Coronary Artery Disease ◽  
Coronary Artery ◽  
Coronary Angiography ◽  
Coronary Artery Bypass Graft ◽  
Coronary Artery Bypass ◽  
Artery Bypass ◽  
Bypass Graft ◽  
Artery Bypass Graft ◽  
Type C ◽  
Artery Disease

Objectives. The target of this study was to explore the coronary angiography characteristics for symptomatic patients with prior coronary artery bypass graft (CABG). Methods. Between 2009 and 2017, 993 patients who had undergone CABG but subsequently suffered recurrent symptoms in Beijing Anzhen Hospital were selected for this study and divided into either medical therapy (MT) group (n = 351) or percutaneous coronary intervention (PCI) group (n = 642) based on the treatment. Clinical data were analyzed between two groups. Results. Patients in the MT group were older and more likely to have chronic lung disease (6.6% vs 3.4%, P=0.026) while patients in the PCI group were more likely to have prior MI (8.8% vs 17.0%, P<0.001). In the MT group, 54.4% of patients had newly developed lesions both in the graft and native coronary artery while 58.1% in the PCI group (P=0.003), and in the MT group, 80.6% had type C coronary artery disease while 60.1% in the PCI group (P<0.001). Patients in the MT group presented higher proportion of diffuse lesions (49.3% vs 15.0%, P<0.001) in native coronary arteries. Conclusion. Patients receiving MT (35.3%) likely had occluded grafts and type C coronary artery disease featuring as diffuse lesions.

Quantification of Coronary Artery Stenosis with 16-Slice MSCT in Patients before CABG Surgery: Comparison to Standard Invasive Coronary Angiography

2005 ◽  
Vol 8 (1) ◽  
pp. 42 ◽  
Author(s):  
C. Probst ◽  
A. Kovacs ◽  
C. Schmitz ◽  
W. Schiller ◽  
H. Schild ◽  
...  
Keyword(s):  
Coronary Artery ◽  
Coronary Angiography ◽  
Coronary Arteries ◽  
Artery Bypass ◽  
Invasive Coronary Angiography ◽  
Bypass Graft ◽  
Heart Association ◽  
Artery Stenosis ◽  
Vessel Disease ◽  
Selective Coronary Angiography

Objective: Invasive, selective coronary angiography is the gold standard for evaluation of coronary artery disease (CAD) and degree of stenosis. The purpose of this study was to compare 3-dimensional (3D) reconstructed 16-slice multislice computed tomographic (MSCT) angiography and selective coronary angiography in patients before elective coronary artery bypass graft (CABG) procedure. Methods: Sixteen-slice MSCT scans (Philips Mx8000 IDT) were performed in 50 patients (42 male/8 female; mean age, 64.44 8.66 years) scheduled for elective CABG procedure. Scans were retrospectively electrocardiogram-gated 3D reconstructed. The images of the coronary arteries were evaluated for stenosis by 2 independent radiologists. The results were compared with the coronary angiography findings using the American Heart Association segmental classification for coronary arteries. Results: Four patients (8%) were excluded for technical reasons. Thirty-eight patients (82.6%) had 3-vessel disease, 4 (8.7 %) had 2-vessel disease, and 4 (8.7%) had an isolated left anterior descending artery stenosis. In the proximal segments all stenoses >50% (56/56) were detected by MSCT; medial segment sensitivity was 97% (73/75), specificity 90.3%; distal segment sensitivity was 90.7% (59/65), specificity 77%. Conclusion: Accurate quantification of coronary stenosis greater than 50% in the proximal and medial segments is possible with high sensitivity and specificity using the new generation of 16-slice MSCTs. There is still a tendency to overestimate stenosis in the distal segments. MSCT seems to be an excellent diagnostic tool for screening patients with possible CAD.

scholarly journals Perivascular Adipose Tissue Inflammation in Ischemic Heart Disease

2021 ◽  
Vol 41 (3) ◽  
pp. 1239-1250
Author(s):  
Celestina Mazzotta ◽  
Sanchita Basu ◽  
Adam C. Gower ◽  
Shakun Karki ◽  
Melissa G. Farb ◽  
...  
Keyword(s):  
Adipose Tissue ◽  
Coronary Artery ◽  
Quantitative Polymerase Chain Reaction ◽  
Artery Bypass ◽  
Bypass Graft ◽  
Artery Bypass Graft ◽  
Chain Reaction ◽  
Perivascular Adipose Tissue ◽  
Polymerase Chain ◽  
Artery Disease

Objective: There is growing recognition that adipose tissue–derived proatherogenic mediators contribute to obesity-related cardiovascular disease. We sought to characterize regional differences in perivascular adipose tissue (PVAT) phenotype in relation to atherosclerosis susceptibility. Approach and Results: We examined thoracic PVAT samples in 34 subjects (body mass index 32±6 kg/m 2 , age 59±11 years) undergoing valvular, aortic, or coronary artery bypass graft surgeries and performed transcriptomic characterization using whole-genome expression profiling and quantitative polymerase chain reaction analyses. We identified a highly inflamed region of PVAT surrounding the human aortic root in close proximity to coronary takeoff and adjoining epicardial fat. In subjects undergoing coronary artery bypass graft, we found 300 genes significantly upregulated (false discovery rate Q <0.1) in paired samples of PVAT surrounding the aortic root compared with nonatherosclerotic left internal mammary artery. Genes encoding proteins mechanistically implicated in atherogenesis were enriched in aortic PVAT consisting of signaling pathways linked to inflammation, WNT (wingless-related integration site) signaling, matrix remodeling, coagulation, and angiogenesis. Overexpression of several proatherogenic transcripts, including IL1β , CCL2 ( MCP-1 ), and IL6 , were confirmed by quantitative polymerase chain reaction and significantly bolstered in coronary artery disease subjects. Angiographic coronary artery disease burden quantified by the Gensini score positively correlated with the expression of inflammatory genes in PVAT. Moreover, periaortic adipose inflammation was markedly higher in obese subjects with striking upregulation (≈8-fold) of IL1β expression compared to nonobese individuals. Conclusions: Proatherogenic mediators that originate from dysfunctional PVAT may contribute to vascular disease mechanisms in human vessels. Moreover, PVAT may adopt detrimental properties under obese conditions that play a key role in the pathophysiology of ischemic heart disease. Graphic Abstract: A graphic abstract is available for this article.

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