1
|
Liu Y, Jiang W, Wang H, Xu M, Liao Y, Zhou H, Bai B, Liu F, Yin H, Liu Q, Liang Y, Yu X, Guo L, Wang S, Ma H, Geng Q. Objective Ischemia, Subjective Angina, and Psychological Distress in Angina With No Obstructive Coronary Disease. J Am Heart Assoc 2024; 13:e034644. [PMID: 39082421 DOI: 10.1161/jaha.124.034644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Accepted: 06/14/2024] [Indexed: 08/07/2024]
Abstract
BACKGROUND Angina with no obstructive coronary disease (ANOCA) and ischemia with no obstructive coronary disease, prevalent yet underrecognized conditions, mostly affect women. Previous studies rarely distinguished between them. We aimed to compare the prevalence of objective ischemia through various examinations in women with ANOCA and assess the impact of objective and subjective ischemia on their mental health. METHODS AND RESULTS A total of 84 eligible women with ANOCA and 42 controls underwent mental stress, pharmacological stress, exercise stress, and Holter testing. Objective evidence of myocardial ischemia was assessed by positron emission tomography-computed tomography and ECG, and subjective symptoms were graded using the Canadian Cardiovascular Society scale (CCS). Psychological assessments were conducted using 6 scales. Among 84 women with ANOCA, 37 (44%) received a diagnosis of ischemia with no obstructive coronary disease following mental stress testing, 20 (28.6%) through pharmacological stress testing, 14 (21.2%) via exercise stress testing, and 24 (32.9%) from Holter. Mental stress-induced myocardial ischemia was more prevalent (P<0.05). Among 54 patients with ANOCA who completed all tests, 30% showed no ischemia, and only 1 (1.9%) showed ischemia in all tests. In addition, patients with ANOCA had higher psychological scores than controls (P<0.01). No significant differences was observed in psychological scores between ANOCA with positive and negative ischemia test results (P>0.05). However, ANOCA with milder angina (CCS I) exhibited higher scores across the Hospital Anxiety and Depression Scale, State-Trait Anxiety Inventory, Perceived Stress Scale, and Posttraumatic Stress Disorder Checklist-Civilian Version and a higher prevalence of Type D personality traits (P<0.05). CONCLUSIONS In patients with ANOCA, the positive rate of myocardial ischemia exhibits variability among several noninvasive tests. A worsened psychological state is more closely linked to milder angina symptoms than to ischemia performance, highlighting the importance of focusing on symptom management in their psychological care. REGISTRATION URL: https://www.clinicaltrials.gov; Unique identifier: NCT03982901.
Collapse
Affiliation(s)
- Yuting Liu
- Guangdong Provincial Clinical Research Center for Geriatrics, Shenzhen Clinical Research Center for Geriatrics Shenzhen People's Hospital (The Second Clinical Medical College, Jinan University; The First Affiliated Hospital, Southern University of Science and Technology) Shenzhen Guangdong China
- Department of Cardiology Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Southern Medical University Guangzhou Guangzhou China
| | - Wei Jiang
- Department of Internal Medicine, Department of Psychiatry and Behavioral Sciences Duke University Medical Center Durham NC USA
| | - Haochen Wang
- Department of Cardiology Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Southern Medical University Guangzhou Guangzhou China
| | - Mingyu Xu
- Department of Cardiology Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Southern Medical University Guangzhou Guangzhou China
| | - Yingxue Liao
- Department of Cardiology Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Southern Medical University Guangzhou Guangzhou China
| | - Haofeng Zhou
- Department of Cardiology Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Southern Medical University Guangzhou Guangzhou China
| | - Bingqing Bai
- Department of Cardiology Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Southern Medical University Guangzhou Guangzhou China
| | - Fengyao Liu
- Department of Cardiology Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Southern Medical University Guangzhou Guangzhou China
| | - Han Yin
- Guangdong Provincial Clinical Research Center for Geriatrics, Shenzhen Clinical Research Center for Geriatrics Shenzhen People's Hospital (The Second Clinical Medical College, Jinan University; The First Affiliated Hospital, Southern University of Science and Technology) Shenzhen Guangdong China
- Department of Cardiology Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Southern Medical University Guangzhou Guangzhou China
| | - Quanjun Liu
- Department of Cardiology Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Southern Medical University Guangzhou Guangzhou China
| | - Yanting Liang
- Guangdong Provincial Clinical Research Center for Geriatrics, Shenzhen Clinical Research Center for Geriatrics Shenzhen People's Hospital (The Second Clinical Medical College, Jinan University; The First Affiliated Hospital, Southern University of Science and Technology) Shenzhen Guangdong China
- Department of Cardiology Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Southern Medical University Guangzhou Guangzhou China
| | - Xueju Yu
- Department of Cardiology Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Southern Medical University Guangzhou Guangzhou China
| | - Lan Guo
- Department of Cardiology Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Southern Medical University Guangzhou Guangzhou China
| | - Shuxia Wang
- Department of Nuclear Medicine, Guangdong Provincial People's Hospital Guangdong Academy of Medical Sciences, Southern Medical University Guangzhou China
| | - Huan Ma
- Department of Cardiology Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Southern Medical University Guangzhou Guangzhou China
| | - Qingshan Geng
- Guangdong Provincial Clinical Research Center for Geriatrics, Shenzhen Clinical Research Center for Geriatrics Shenzhen People's Hospital (The Second Clinical Medical College, Jinan University; The First Affiliated Hospital, Southern University of Science and Technology) Shenzhen Guangdong China
- Department of Cardiology Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Southern Medical University Guangzhou Guangzhou China
| |
Collapse
|
2
|
Lima R, Bezerra ALF, Daibes M, Domenico C, Lorenzo AD. Clinical Impact of Assessment of Myocardial Flow Reserve in Identifying the Cause of Chest Discomfort. Arq Bras Cardiol 2024; 121:e20230700. [PMID: 38985080 PMCID: PMC11216331 DOI: 10.36660/abc.20230700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Accepted: 03/13/2024] [Indexed: 07/11/2024] Open
Abstract
BACKGROUND Gamma cameras with cadmium-zinc telluride (CZT) detectors allowed the quantification of myocardial flow reserve (MBF), which can increase the accuracy of myocardial perfusion scintigraphy (MPS) to detect the cause of chest discomfort. OBJECTIVE To assess the clinical impact of MBF to detect the cause of chest discomfort. METHODS 171 patients with chest discomfort who underwent coronary angiography or coronary CT angiography also underwent MPS and MBF in a time interval of <30 days. The acquisitions of dynamic imaging of rest and stress were initiated simultaneously with the 99mTc injection sestamibi (10 and 30mCi, respectively), both lasting eleven minutes, followed by immediately acquiring perfusion images for 5 minutes. The stress was performed with dipyridamole. A global or per coronary territory MBF <2.0 was classified as abnormal. RESULTS The average age was 65.9±10 years (60% female). The anatomical evaluation showed that 115 (67.3%) patients had coronary obstruction significant, with 69 having abnormal MPs and 91 having abnormal MBF (60.0% vs 79.1%, p<0.01). Among patients without obstruction (56 - 32.7%), 7 had abnormal MPS, and 23 had reduced global MBF. Performing MBF identified the etiology of the chest discomfort in 114 patients while MPS identified it in 76 (66.7% vs 44.4%, p<0.001). CONCLUSION MBF is a quantifiable physiological measure that increases the clinical impact of MPS in detecting the cause of chest discomfort through greater accuracy for detecting obstructive CAD, and it also makes it possible to identify the presence of the microvascular disease.
Collapse
Affiliation(s)
- Ronaldo Lima
- Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ - Brasil
| | | | - Marianna Daibes
- Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ - Brasil
| | - Claudio Domenico
- Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ - Brasil
| | | |
Collapse
|
3
|
van Drie RWA, van de Wouw J, Zandbergen LM, Dehairs J, Swinnen JV, Mulder MT, Verhaar MC, MaassenVanDenBrink A, Duncker DJ, Sorop O, Merkus D. Vasodilator reactive oxygen species ameliorate perturbed myocardial oxygen delivery in exercising swine with multiple comorbidities. Basic Res Cardiol 2024:10.1007/s00395-024-01055-z. [PMID: 38796544 DOI: 10.1007/s00395-024-01055-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 05/06/2024] [Accepted: 05/07/2024] [Indexed: 05/28/2024]
Abstract
Multiple common cardiovascular comorbidities produce coronary microvascular dysfunction. We previously observed in swine that a combination of diabetes mellitus (DM), high fat diet (HFD) and chronic kidney disease (CKD) induced systemic inflammation, increased oxidative stress and produced coronary endothelial dysfunction, altering control of coronary microvascular tone via loss of NO bioavailability, which was associated with an increase in circulating endothelin (ET). In the present study, we tested the hypotheses that (1) ROS scavenging and (2) ETA+B-receptor blockade improve myocardial oxygen delivery in the same female swine model. Healthy female swine on normal pig chow served as controls (Normal). Five months after induction of DM (streptozotocin, 3 × 50 mg kg-1 i.v.), hypercholesterolemia (HFD) and CKD (renal embolization), swine were chronically instrumented and studied at rest and during exercise. Sustained hyperglycemia, hypercholesterolemia and renal dysfunction were accompanied by systemic inflammation and oxidative stress. In vivo ROS scavenging (TEMPOL + MPG) reduced myocardial oxygen delivery in DM + HFD + CKD swine, suggestive of a vasodilator influence of endogenous ROS, while it had no effect in Normal swine. In vitro wire myography revealed a vasodilator role for hydrogen peroxide (H2O2) in isolated small coronary artery segments from DM + HFD + CKD, but not Normal swine. Increased catalase activity and ceramide production in left ventricular myocardial tissue of DM + HFD + CKD swine further suggest that increased H2O2 acts as vasodilator ROS in the coronary microvasculature. Despite elevated ET-1 plasma levels in DM + HFD + CKD swine, ETA+B blockade did not affect myocardial oxygen delivery in Normal or DM + HFD + CKD swine. In conclusion, loss of NO bioavailability due to 5 months exposure to multiple comorbidities is partially compensated by increased H2O2-mediated coronary vasodilation.
Collapse
Affiliation(s)
- R W A van Drie
- Division of Experimental Cardiology, Department of Cardiology, Thoraxcenter, Erasmus University Medical Center, PO Box 2040, 3000 CA, Rotterdam, The Netherlands
- Laboratory of Vascular Medicine, Department of Internal Medicine, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - J van de Wouw
- Division of Experimental Cardiology, Department of Cardiology, Thoraxcenter, Erasmus University Medical Center, PO Box 2040, 3000 CA, Rotterdam, The Netherlands
| | - L M Zandbergen
- Division of Experimental Cardiology, Department of Cardiology, Thoraxcenter, Erasmus University Medical Center, PO Box 2040, 3000 CA, Rotterdam, The Netherlands
- Walter Brendel Center of Experimental Medicine (WBex), University Clinic Munich, 81377 LMU, Munich, Germany
| | - J Dehairs
- Laboratory of Lipid Metabolism and Cancer, Department of Oncology, KU Leuven-University of Leuven, Leuven, Belgium
| | - J V Swinnen
- Laboratory of Lipid Metabolism and Cancer, Department of Oncology, KU Leuven-University of Leuven, Leuven, Belgium
| | - M T Mulder
- Laboratory of Vascular Medicine, Department of Internal Medicine, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - M C Verhaar
- Department of Nephrology and Hypertension, University Medical Center Utrecht, Utrecht, The Netherlands
| | - A MaassenVanDenBrink
- Laboratory of Vascular Medicine, Department of Internal Medicine, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - D J Duncker
- Division of Experimental Cardiology, Department of Cardiology, Thoraxcenter, Erasmus University Medical Center, PO Box 2040, 3000 CA, Rotterdam, The Netherlands
| | - O Sorop
- Division of Experimental Cardiology, Department of Cardiology, Thoraxcenter, Erasmus University Medical Center, PO Box 2040, 3000 CA, Rotterdam, The Netherlands
| | - D Merkus
- Division of Experimental Cardiology, Department of Cardiology, Thoraxcenter, Erasmus University Medical Center, PO Box 2040, 3000 CA, Rotterdam, The Netherlands.
- Walter Brendel Center of Experimental Medicine (WBex), University Clinic Munich, 81377 LMU, Munich, Germany.
- Center for Cardiovascular Research (DZHK), Munich Heart Alliance (MHA), Partner Site Munich, 81377, Munich, Germany.
- Interfaculty Center for Endocrine and Cardiovascular Disease Network Modelling and Clinical Transfer (ICONLMU), University Clinic Munich, LMU, Munich, Germany.
| |
Collapse
|
4
|
Borovac JA. The Molecular Mechanisms and Therapeutic Targets of Atherosclerosis: From Basic Research to Interventional Cardiology. Int J Mol Sci 2024; 25:4936. [PMID: 38732155 PMCID: PMC11084326 DOI: 10.3390/ijms25094936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2024] [Accepted: 04/25/2024] [Indexed: 05/13/2024] Open
Abstract
The goal of this Special Issue was to collect original pieces as well as state-of-the-art review articles from scientists and research groups with specific interests in atherosclerosis research [...].
Collapse
Affiliation(s)
- Josip Andelo Borovac
- Division of Interventional Cardiology, Cardiovascular Diseases Department, University Hospital of Split (KBC Split), 21000 Split, Croatia; ; Tel.: +385-92-172-1314
- Department of Pathophysiology, University of Split School of Medicine, 21000 Split, Croatia
- University Department of Health Studies, University of Split, 21000 Split, Croatia
| |
Collapse
|
5
|
Bland A, Chuah E, Meere W, Ford TJ. Targeted Therapies for Microvascular Disease. Cardiol Clin 2024; 42:137-145. [PMID: 37949535 DOI: 10.1016/j.ccl.2023.07.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2023]
Abstract
Coronary microvascular dysfunction (CMD) is a common cause of ischemia but no obstructive coronary artery disease that results in an inability of the coronary microvasculature to meet myocardial oxygen demand. CMD is challenging to diagnose and manage due to a lack of mechanistic research and targeted therapy. Recent evidence suggests we can improved patient outcomes by stratifying antianginal therapies according to the diagnosis revealed by invasive assessment of the coronary microcirculation. This review article appraises the evidence for management of CMD, which includes treatment of cardiovascular risk, antianginal therapy and therapy for atherosclerosis.
Collapse
Affiliation(s)
- Adam Bland
- Department of Cardiology, Gosford Hospital - Central Coast LHD, 75 Holden Street, Gosford, New South Wales 2250, Australia; The University of Newcastle, University Dr, Callaghan, New South Wales 2308, Australia
| | - Eunice Chuah
- Department of Cardiology, Gosford Hospital - Central Coast LHD, 75 Holden Street, Gosford, New South Wales 2250, Australia; The University of Newcastle, University Dr, Callaghan, New South Wales 2308, Australia
| | - William Meere
- Department of Cardiology, Gosford Hospital - Central Coast LHD, 75 Holden Street, Gosford, New South Wales 2250, Australia; The University of Newcastle, University Dr, Callaghan, New South Wales 2308, Australia
| | - Thomas J Ford
- Department of Cardiology, Gosford Hospital - Central Coast LHD, 75 Holden Street, Gosford, New South Wales 2250, Australia; The University of Newcastle, University Dr, Callaghan, New South Wales 2308, Australia; University of Glasgow, ICAMS, G12 8QQ Glasgow, UK.
| |
Collapse
|
6
|
Sidik NP, Stanley B, Sykes R, Morrow AJ, Bradley CP, McDermott M, Ford TJ, Roditi G, Hargreaves A, Stobo D, Adams J, Byrne J, Mahrous A, Young R, Carrick D, McGeoch R, Corcoran D, Lang NN, Heggie R, Wu O, McEntegart MB, McConnachie A, Berry C. Invasive Endotyping in Patients With Angina and No Obstructive Coronary Artery Disease: A Randomized Controlled Trial. Circulation 2024; 149:7-23. [PMID: 37795617 DOI: 10.1161/circulationaha.123.064751] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Accepted: 08/01/2023] [Indexed: 10/06/2023]
Abstract
BACKGROUND We investigated the usefulness of invasive coronary function testing to diagnose the cause of angina in patients with no obstructive coronary arteries. METHODS Outpatients referred for coronary computed tomography angiography in 3 hospitals in the United Kingdom were prospectively screened. After coronary computed tomography angiography, patients with unobstructed coronary arteries, and who consented, underwent invasive endotyping. The diagnostic assessments included coronary angiography, fractional flow reserve (patient excluded if ≤0.80), and, for those without obstructive coronary artery disease, coronary flow reserve (abnormal <2.0), index of microvascular resistance (abnormal ≥25), and intracoronary infusion of acetylcholine (0.182, 1.82, and 18.2 μg/mL; 2 mL/min for 2 minutes) to assess for microvascular and coronary spasm. Participants were randomly assigned to disclosure of the results of the coronary function tests to the invasive cardiologist (intervention group) or nondisclosure (control group, blinded). In the control group, a diagnosis of vasomotor angina was based on medical history, noninvasive tests, and coronary angiography. The primary outcome was the between-group difference in the reclassification rate of the initial diagnosis on the basis of coronary computed tomography angiography versus the final diagnosis after invasive endotyping. The Seattle Angina Questionnaire summary score and Treatment Satisfaction Questionnaire for Medication were secondary outcomes. RESULTS Of 322 eligible patients, 250 (77.6%) underwent invasive endotyping; 19 (7.6%) had obstructive coronary disease, 127 (55.0%) had microvascular angina, 27 (11.7%) had vasospastic angina, 17 (7.4%) had both, and 60 (26.0%) had no abnormality. A total of 231 patients (mean age, 55.7 years; 64.5% women) were randomly assigned and followed up (median duration, 19.9 [12.6-26.9] months). The clinician diagnosed vasomotor angina in 51 (44.3%) patients in the intervention group and in 55 (47.4%) patients in the control group. After randomization, patients in the intervention group were 4-fold (odds ratio, 4.05 [95% CI, 2.32-7.24]; P<0.001) more likely to be diagnosed with a coronary vasomotor disorder; the frequency of this diagnosis increased to 76.5%. The frequency of normal coronary function (ie, no vasomotor disorder) was not different between the groups before randomization (51.3% versus 50.9%) but was reduced in the intervention group after randomization (23.5% versus 50.9%, P<0.001). At 6 and 12 months, the Seattle Angina Questionnaire summary score in the intervention versus control groups was 59.2±24.2 (2.3±16.2 change from baseline) versus 60.4±23.9 (4.6±16.4 change) and 63.7±23.5 (4.7±14.7 change) versus 66.0±19.3 (7.9±17.1 change), respectively, and not different between groups (global P=0.36). Compared with the control group, global treatment satisfaction was higher in the intervention group at 12 months (69.9±22.8 versus 61.7±26.9, P=0.013). CONCLUSIONS For patients with angina and no obstructive coronary arteries, a diagnosis informed by invasive functional assessment had no effect on long-term angina burden, whereas treatment satisfaction improved. REGISTRATION URL: https://www.clinicaltrials.gov; Unique identifier: NCT03477890.
Collapse
Affiliation(s)
- Novalia P Sidik
- West of Scotland Heart and Lung Centre, NHS Golden Jubilee, Glasgow, United Kingdom (N.P.S., R.S., A.J.M., C.P.B., M.M., M.B.M., C.B.)
- British Heart Foundation Glasgow Cardiovascular Research Centre, School of Cardiovascular and Metabolic Health (N.P.S., R.S., A.J.M., C.P.B., M.M., N.N.L., M.B.M., C.B.), University of Glasgow, Glasgow, United Kingdom
| | - Bethany Stanley
- Robertson Centre for Biostatistics, School of Health and Wellbeing (B.S., R.Y., A. McConnachie), University of Glasgow, Glasgow, United Kingdom
| | - Robert Sykes
- West of Scotland Heart and Lung Centre, NHS Golden Jubilee, Glasgow, United Kingdom (N.P.S., R.S., A.J.M., C.P.B., M.M., M.B.M., C.B.)
- British Heart Foundation Glasgow Cardiovascular Research Centre, School of Cardiovascular and Metabolic Health (N.P.S., R.S., A.J.M., C.P.B., M.M., N.N.L., M.B.M., C.B.), University of Glasgow, Glasgow, United Kingdom
| | - Andrew J Morrow
- West of Scotland Heart and Lung Centre, NHS Golden Jubilee, Glasgow, United Kingdom (N.P.S., R.S., A.J.M., C.P.B., M.M., M.B.M., C.B.)
- British Heart Foundation Glasgow Cardiovascular Research Centre, School of Cardiovascular and Metabolic Health (N.P.S., R.S., A.J.M., C.P.B., M.M., N.N.L., M.B.M., C.B.), University of Glasgow, Glasgow, United Kingdom
| | - Conor P Bradley
- West of Scotland Heart and Lung Centre, NHS Golden Jubilee, Glasgow, United Kingdom (N.P.S., R.S., A.J.M., C.P.B., M.M., M.B.M., C.B.)
- British Heart Foundation Glasgow Cardiovascular Research Centre, School of Cardiovascular and Metabolic Health (N.P.S., R.S., A.J.M., C.P.B., M.M., N.N.L., M.B.M., C.B.), University of Glasgow, Glasgow, United Kingdom
| | - Michael McDermott
- West of Scotland Heart and Lung Centre, NHS Golden Jubilee, Glasgow, United Kingdom (N.P.S., R.S., A.J.M., C.P.B., M.M., M.B.M., C.B.)
- British Heart Foundation Glasgow Cardiovascular Research Centre, School of Cardiovascular and Metabolic Health (N.P.S., R.S., A.J.M., C.P.B., M.M., N.N.L., M.B.M., C.B.), University of Glasgow, Glasgow, United Kingdom
| | - Thomas J Ford
- Department of Cardiology, Gosford Hospital, Central Coast, Australia (T.J.F.)
- Faculty of Medicine, The University of Newcastle, Australia (T.J.F.)
| | - Giles Roditi
- Department of Radiology, NHS Greater Glasgow and Clyde Health Board, Glasgow, United Kingdom (G.R., D.S.)
| | - Allister Hargreaves
- Department of Cardiology, Forth Valley Royal Hospital, Larbert, United Kingdom (A.H.)
| | - David Stobo
- Department of Radiology, NHS Greater Glasgow and Clyde Health Board, Glasgow, United Kingdom (G.R., D.S.)
| | - Jacqueline Adams
- Department of Cardiology, Queen Elizabeth University Hospital, Glasgow, United Kingdom (J.A., J.B., D. Corcoran, N.N.L.)
| | - John Byrne
- Department of Cardiology, Queen Elizabeth University Hospital, Glasgow, United Kingdom (J.A., J.B., D. Corcoran, N.N.L.)
| | - Ahmed Mahrous
- Raigmore Hospital, Inverness, United Kingdom (A. Mahrous)
| | - Robin Young
- Robertson Centre for Biostatistics, School of Health and Wellbeing (B.S., R.Y., A. McConnachie), University of Glasgow, Glasgow, United Kingdom
| | - David Carrick
- Department of Cardiology, University Hospital Hairmyres, East Kilbride, United Kingdom (D. Carrick, R.M.)
| | - Ross McGeoch
- Department of Cardiology, University Hospital Hairmyres, East Kilbride, United Kingdom (D. Carrick, R.M.)
| | - David Corcoran
- Department of Cardiology, Queen Elizabeth University Hospital, Glasgow, United Kingdom (J.A., J.B., D. Corcoran, N.N.L.)
| | - Ninian N Lang
- British Heart Foundation Glasgow Cardiovascular Research Centre, School of Cardiovascular and Metabolic Health (N.P.S., R.S., A.J.M., C.P.B., M.M., N.N.L., M.B.M., C.B.), University of Glasgow, Glasgow, United Kingdom
- Department of Cardiology, Queen Elizabeth University Hospital, Glasgow, United Kingdom (J.A., J.B., D. Corcoran, N.N.L.)
| | - Robert Heggie
- Health Economics and Health Technology Assessment, School of Health and Wellbeing (R.H., O.W.), University of Glasgow, Glasgow, United Kingdom
| | - Olivia Wu
- Health Economics and Health Technology Assessment, School of Health and Wellbeing (R.H., O.W.), University of Glasgow, Glasgow, United Kingdom
| | - Margaret B McEntegart
- West of Scotland Heart and Lung Centre, NHS Golden Jubilee, Glasgow, United Kingdom (N.P.S., R.S., A.J.M., C.P.B., M.M., M.B.M., C.B.)
- British Heart Foundation Glasgow Cardiovascular Research Centre, School of Cardiovascular and Metabolic Health (N.P.S., R.S., A.J.M., C.P.B., M.M., N.N.L., M.B.M., C.B.), University of Glasgow, Glasgow, United Kingdom
- Department of Cardiology, Columbia University Medical Center, New York (M.B.M.)
| | - Alex McConnachie
- Robertson Centre for Biostatistics, School of Health and Wellbeing (B.S., R.Y., A. McConnachie), University of Glasgow, Glasgow, United Kingdom
| | - Colin Berry
- West of Scotland Heart and Lung Centre, NHS Golden Jubilee, Glasgow, United Kingdom (N.P.S., R.S., A.J.M., C.P.B., M.M., M.B.M., C.B.)
- British Heart Foundation Glasgow Cardiovascular Research Centre, School of Cardiovascular and Metabolic Health (N.P.S., R.S., A.J.M., C.P.B., M.M., N.N.L., M.B.M., C.B.), University of Glasgow, Glasgow, United Kingdom
| |
Collapse
|
7
|
Bland A, Chuah E, Meere W, Ford TJ. Targeted Therapies for Microvascular Disease. Heart Fail Clin 2024; 20:91-99. [PMID: 37953025 DOI: 10.1016/j.hfc.2023.06.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2023]
Abstract
Coronary microvascular dysfunction (CMD) is a common cause of ischemia but no obstructive coronary artery disease that results in an inability of the coronary microvasculature to meet myocardial oxygen demand. CMD is challenging to diagnose and manage due to a lack of mechanistic research and targeted therapy. Recent evidence suggests we can improved patient outcomes by stratifying antianginal therapies according to the diagnosis revealed by invasive assessment of the coronary microcirculation. This review article appraises the evidence for management of CMD, which includes treatment of cardiovascular risk, antianginal therapy and therapy for atherosclerosis.
Collapse
Affiliation(s)
- Adam Bland
- Department of Cardiology, Gosford Hospital - Central Coast LHD, 75 Holden Street, Gosford, New South Wales 2250, Australia; The University of Newcastle, University Dr, Callaghan, New South Wales 2308, Australia
| | - Eunice Chuah
- Department of Cardiology, Gosford Hospital - Central Coast LHD, 75 Holden Street, Gosford, New South Wales 2250, Australia; The University of Newcastle, University Dr, Callaghan, New South Wales 2308, Australia
| | - William Meere
- Department of Cardiology, Gosford Hospital - Central Coast LHD, 75 Holden Street, Gosford, New South Wales 2250, Australia; The University of Newcastle, University Dr, Callaghan, New South Wales 2308, Australia
| | - Thomas J Ford
- Department of Cardiology, Gosford Hospital - Central Coast LHD, 75 Holden Street, Gosford, New South Wales 2250, Australia; The University of Newcastle, University Dr, Callaghan, New South Wales 2308, Australia; University of Glasgow, ICAMS, G12 8QQ Glasgow, UK.
| |
Collapse
|
8
|
Zdravkovic M, Popadic V, Klasnja S, Klasnja A, Ivankovic T, Lasica R, Lovic D, Gostiljac D, Vasiljevic Z. Coronary Microvascular Dysfunction and Hypertension: A Bond More Important than We Think. MEDICINA (KAUNAS, LITHUANIA) 2023; 59:2149. [PMID: 38138252 PMCID: PMC10744540 DOI: 10.3390/medicina59122149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 12/01/2023] [Accepted: 12/07/2023] [Indexed: 12/24/2023]
Abstract
Coronary microvascular dysfunction (CMD) is a clinical entity linked with various risk factors that significantly affect cardiac morbidity and mortality. Hypertension, one of the most important, causes both functional and structural alterations in the microvasculature, promoting the occurrence and progression of microvascular angina. Endothelial dysfunction and capillary rarefaction play the most significant role in the development of CMD among patients with hypertension. CMD is also related to several hypertension-induced morphological and functional changes in the myocardium in the subclinical and early clinical stages, including left ventricular hypertrophy, interstitial myocardial fibrosis, and diastolic dysfunction. This indicates the fact that CMD, especially if associated with hypertension, is a subclinical marker of end-organ damage and heart failure, particularly that with preserved ejection fraction. This is why it is important to search for microvascular angina in every patient with hypertension and chest pain not associated with obstructive coronary artery disease. Several highly sensitive and specific non-invasive and invasive diagnostic modalities have been developed to evaluate the presence and severity of CMD and also to investigate and guide the treatment of additional complications that can affect further prognosis. This comprehensive review provides insight into the main pathophysiological mechanisms of CMD in hypertensive patients, offering an integrated diagnostic approach as well as an overview of currently available therapeutical modalities.
Collapse
Affiliation(s)
- Marija Zdravkovic
- Clinic for Internal Medicine, University Clinical Hospital Center Bezanijska Kosa, 11000 Belgrade, Serbia; (M.Z.); (S.K.); (A.K.); (T.I.)
- Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia; (R.L.); (D.G.); (Z.V.)
| | - Viseslav Popadic
- Clinic for Internal Medicine, University Clinical Hospital Center Bezanijska Kosa, 11000 Belgrade, Serbia; (M.Z.); (S.K.); (A.K.); (T.I.)
| | - Slobodan Klasnja
- Clinic for Internal Medicine, University Clinical Hospital Center Bezanijska Kosa, 11000 Belgrade, Serbia; (M.Z.); (S.K.); (A.K.); (T.I.)
| | - Andrea Klasnja
- Clinic for Internal Medicine, University Clinical Hospital Center Bezanijska Kosa, 11000 Belgrade, Serbia; (M.Z.); (S.K.); (A.K.); (T.I.)
| | - Tatjana Ivankovic
- Clinic for Internal Medicine, University Clinical Hospital Center Bezanijska Kosa, 11000 Belgrade, Serbia; (M.Z.); (S.K.); (A.K.); (T.I.)
| | - Ratko Lasica
- Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia; (R.L.); (D.G.); (Z.V.)
- Clinic of Cardiology, Clinical Center of Serbia, 11000 Belgrade, Serbia
| | - Dragan Lovic
- Clinic for Internal Diseases Inter Medica, 18000 Nis, Serbia;
- School of Medicine, Singidunum University, 18000 Nis, Serbia
| | - Drasko Gostiljac
- Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia; (R.L.); (D.G.); (Z.V.)
- Clinic of Endocrinology, Diabetes and Metabolic Diseases, Clinical Center of Serbia, 11000 Belgrade, Serbia
| | - Zorana Vasiljevic
- Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia; (R.L.); (D.G.); (Z.V.)
| |
Collapse
|
9
|
Yang Z, Liu Y, Li Z, Feng S, Lin S, Ge Z, Fan Y, Wang Y, Wang X, Mao J. Coronary microvascular dysfunction and cardiovascular disease: Pathogenesis, associations and treatment strategies. Biomed Pharmacother 2023; 164:115011. [PMID: 37321056 DOI: 10.1016/j.biopha.2023.115011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 06/09/2023] [Accepted: 06/11/2023] [Indexed: 06/17/2023] Open
Abstract
Coronary microvascular dysfunction (CMD) is a high-risk factor for a variety of cardiovascular events. Due to its complex aetiology and concealability, knowledge of the pathophysiological mechanism of CMD is still limited at present, which greatly restricts its clinical diagnosis and treatment. Studies have shown that CMD is closely related to a variety of cardiovascular diseases, can aggravate the occurrence and development of cardiovascular diseases, and is closely related to a poor prognosis in patients with cardiovascular diseases. Improving coronary microvascular remodelling and increasing myocardial perfusion might be promising strategies for the treatment of cardiovascular diseases. In this paper, the pathogenesis and functional assessment of CMD are reviewed first, along with the relationship of CMD with cardiovascular diseases. Then, the latest strategies for the treatment of CMD and cardiovascular diseases are summarized. Finally, urgent scientific problems in CMD and cardiovascular diseases are highlighted and future research directions are proposed to provide prospective insights for the prevention and treatment of CMD and cardiovascular diseases in the future.
Collapse
Affiliation(s)
- Zhihua Yang
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, Tianjin, China; Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China.
| | - Yangxi Liu
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, Tianjin, China.
| | - Zhenzhen Li
- Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China.
| | - Shaoling Feng
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, Tianjin, China.
| | - Shanshan Lin
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, Tianjin, China.
| | - Zhao Ge
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, Tianjin, China.
| | - Yujian Fan
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, Tianjin, China.
| | - Yi Wang
- Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China.
| | - Xianliang Wang
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, Tianjin, China.
| | - Jingyuan Mao
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, Tianjin, China.
| |
Collapse
|
10
|
Zhao X, Gong Y, Xu L, Xia L, Zhang J, Zheng D, Yao Z, Zhang X, Wei H, Jiang J, Liu H, Mao J. Entropy-based reliable non-invasive detection of coronary microvascular dysfunction using machine learning algorithm. MATHEMATICAL BIOSCIENCES AND ENGINEERING : MBE 2023; 20:13061-13085. [PMID: 37501478 DOI: 10.3934/mbe.2023582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/29/2023]
Abstract
PURPOSE Coronary microvascular dysfunction (CMD) is emerging as an important cause of myocardial ischemia, but there is a lack of a non-invasive method for reliable early detection of CMD. AIM To develop an electrocardiogram (ECG)-based machine learning algorithm for CMD detection that will lay the groundwork for patient-specific non-invasive early detection of CMD. METHODS Vectorcardiography (VCG) was calculated from each 10-second ECG of CMD patients and healthy controls. Sample entropy (SampEn), approximate entropy (ApEn), and complexity index (CI) derived from multiscale entropy were extracted from ST-T segments of each lead in ECGs and VCGs. The most effective entropy subset was determined using the sequential backward selection algorithm under the intra-patient and inter-patient schemes, separately. Then, the corresponding optimal model was selected from eight machine learning models for each entropy feature based on five-fold cross-validations. Finally, the classification performance of SampEn-based, ApEn-based, and CI-based models was comprehensively evaluated and tested on a testing dataset to investigate the best one under each scheme. RESULTS ApEn-based SVM model was validated as the optimal one under the intra-patient scheme, with all testing evaluation metrics over 0.8. Similarly, ApEn-based SVM model was selected as the best one under the intra-patient scheme, with major evaluation metrics over 0.8. CONCLUSIONS Entropies derived from ECGs and VCGs can effectively detect CMD under both intra-patient and inter-patient schemes. Our proposed models may provide the possibility of an ECG-based tool for non-invasive detection of CMD.
Collapse
Affiliation(s)
- Xiaoye Zhao
- School of Instrument Science and Opto-electronic Engineering, Hefei University of Technology, Hefei 230009, Anhui, China
- School of Electrical and Information Engineering, North Minzu University, Yinchuan 750001, Ningxia, China
- Key Laboratory of Atmospheric Environment Remote Sensing of Ningxia, Yinchuan 750001, Ningxia, China
| | - Yinlan Gong
- Institute of Wenzhou, Zhejiang University, Wenzhou 325000, Zhejiang, China
| | - Lihua Xu
- Hangzhou Linghua Biotech Ltd, Hangzhou 310009, Zhejiang, China
| | - Ling Xia
- Key Laboratory for Biomedical Engineering of Ministry of Education, Hangzhou 310009, Zhejiang, China
- Institute of Biomedical Engineering, Zhejiang University, Hangzhou 310009, Zhejiang, China
| | - Jucheng Zhang
- Department of Clinical Engineering, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, Zhejiang, China
| | - Dingchang Zheng
- Research Centre for Intelligent Healthcare, Coventry University, Coventry, CV1 5FB, United Kingdom
| | - Zongbi Yao
- Department of Cardiology, Ningxia Hui Autonomous Region People's Hospital, Yinchuan 750021, Ningxia, China
| | - Xinjie Zhang
- Department of Cardiology, Ningxia Hui Autonomous Region People's Hospital, Yinchuan 750021, Ningxia, China
| | - Haicheng Wei
- School of Electrical and Information Engineering, North Minzu University, Yinchuan 750001, Ningxia, China
| | - Jun Jiang
- Department of Cardiology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, Zhejiang, China
| | - Haipeng Liu
- Research Centre for Intelligent Healthcare, Coventry University, Coventry, CV1 5FB, United Kingdom
| | - Jiandong Mao
- School of Instrument Science and Opto-electronic Engineering, Hefei University of Technology, Hefei 230009, Anhui, China
- School of Electrical and Information Engineering, North Minzu University, Yinchuan 750001, Ningxia, China
- Key Laboratory of Atmospheric Environment Remote Sensing of Ningxia, Yinchuan 750001, Ningxia, China
| |
Collapse
|
11
|
Carberry J, Aubiniere-Robb L, Kamdar A, Lomholt-Welch H, Berry C. Reappraising Ischemic Heart Disease in Women. Rev Cardiovasc Med 2023; 24:118. [PMID: 39076281 PMCID: PMC11273011 DOI: 10.31083/j.rcm2404118] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 01/17/2023] [Accepted: 02/07/2023] [Indexed: 07/31/2024] Open
Abstract
Despite advances in the management of ischemic heart disease worldwide, mortality in women remains disproportionally high in comparison to men, particularly in women under the age of 55. The greater prevalence of ischemia with non-obstructive coronary arteries (INOCA) in women has been highlighted as a potential cause of this disparity. Moreover, current guideline recommendations for computed tomography coronary angiography (CTCA) as the first line of investigation for stable chest pain may further amplify this inequality. Traditional cardiovascular risk factors carry greater influence in women than men in the development of ischemic heart disease. Despite this, women have been consistently under-represented in large-scale clinical trials. Chest pain in women is more likely to be overlooked due to the higher likelihood of atypical presentation and normal anatomical imaging, despite persistent symptoms and decreased quality of life indicators. Accordingly, we call into question a CTCA-first approach in clinical guidelines; instead, we favor a personalized, patient first approach. Due to the misdiagnosis of ischemic heart disease in women, a large proportion are denied access to preventative therapy. This is especially true of women with INOCA, for which there is a critical lack of specific guidelines and rigorous evidence-based therapies. Ongoing clinical trials aim to identify potential management options that may benefit those with INOCA, bringing the field closer to eliminating sex-related disparities in the diagnosis, management and prognosis of ischemic heart disease.
Collapse
Affiliation(s)
- Jaclyn Carberry
- British Heart Foundation Glasgow Cardiovascular Research Centre, University of Glasgow, G12 8QQ Glasgow, Scotland, UK
- The West of Scotland Heart and Lung Centre, NHS Golden Jubilee, G81 4DY Glasgow, Scotland, UK
| | - Louise Aubiniere-Robb
- British Heart Foundation Glasgow Cardiovascular Research Centre, University of Glasgow, G12 8QQ Glasgow, Scotland, UK
| | - Anna Kamdar
- British Heart Foundation Glasgow Cardiovascular Research Centre, University of Glasgow, G12 8QQ Glasgow, Scotland, UK
| | - Harriet Lomholt-Welch
- British Heart Foundation Glasgow Cardiovascular Research Centre, University of Glasgow, G12 8QQ Glasgow, Scotland, UK
| | - Colin Berry
- British Heart Foundation Glasgow Cardiovascular Research Centre, University of Glasgow, G12 8QQ Glasgow, Scotland, UK
- The West of Scotland Heart and Lung Centre, NHS Golden Jubilee, G81 4DY Glasgow, Scotland, UK
| |
Collapse
|
12
|
Bland A, Chuah E, Meere W, Ford TJ. Targeted Therapies for Microvascular Disease. Interv Cardiol Clin 2023; 12:131-139. [PMID: 36372457 DOI: 10.1016/j.iccl.2022.09.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Coronary microvascular dysfunction (CMD) is a common cause of ischemia but no obstructive coronary artery disease that results in an inability of the coronary microvasculature to meet myocardial oxygen demand. CMD is challenging to diagnose and manage due to a lack of mechanistic research and targeted therapy. Recent evidence suggests we can improved patient outcomes by stratifying antianginal therapies according to the diagnosis revealed by invasive assessment of the coronary microcirculation. This review article appraises the evidence for management of CMD, which includes treatment of cardiovascular risk, antianginal therapy and therapy for atherosclerosis.
Collapse
Affiliation(s)
- Adam Bland
- Department of Cardiology, Gosford Hospital - Central Coast LHD, 75 Holden Street, Gosford, New South Wales 2250, Australia; The University of Newcastle, University Dr, Callaghan, New South Wales 2308, Australia
| | - Eunice Chuah
- Department of Cardiology, Gosford Hospital - Central Coast LHD, 75 Holden Street, Gosford, New South Wales 2250, Australia; The University of Newcastle, University Dr, Callaghan, New South Wales 2308, Australia
| | - William Meere
- Department of Cardiology, Gosford Hospital - Central Coast LHD, 75 Holden Street, Gosford, New South Wales 2250, Australia; The University of Newcastle, University Dr, Callaghan, New South Wales 2308, Australia
| | - Thomas J Ford
- Department of Cardiology, Gosford Hospital - Central Coast LHD, 75 Holden Street, Gosford, New South Wales 2250, Australia; The University of Newcastle, University Dr, Callaghan, New South Wales 2308, Australia; University of Glasgow, ICAMS, G12 8QQ Glasgow, UK.
| |
Collapse
|
13
|
Gao J, Meng T, Li M, Du R, Ding J, Li A, Yu S, Li Y, He Q. Global trends and frontiers in research on coronary microvascular dysfunction: a bibliometric analysis from 2002 to 2022. Eur J Med Res 2022; 27:233. [PMID: 36335406 PMCID: PMC9636644 DOI: 10.1186/s40001-022-00869-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Accepted: 10/25/2022] [Indexed: 11/07/2022] Open
Abstract
BACKGROUND Coronary microvascular dysfunction (CMD) is a leading cause of ischemic heart disease. Over the past few decades, considerable progress has been made with respect to research on CMD. The present study summarized the current research hotspots and trends on CMD by applying a bibliometric approach. METHODS Relevant publications between 2002 and 2022 were extracted from the Web of Science Core Collection. Visualization network maps of countries, institutions, authors, and co-cited authors were built using VOSviewer. CiteSpace was used for keyword analysis and the construction of a dual-map overlay of journals and a timeline view of co-cited references. RESULTS 1539 CMD-related publications were extracted for bibliometric analysis. The annual publications generally showed an upward trend. The United States of America was the most prolific country, with 515 publications (33.5%). Camici P. G. was the most influential author, whereas the European Heart Journal, Circulation, and Journal of the American College of Cardiology were the most authoritative journals. Research hotspot analysis revealed that endothelial dysfunction as well as reduced nitric oxide production or bioavailability played critical roles in CMD development. Positron emission tomography was the most widely used imaging method for diagnosis. In addition, microvascular angina, hypertrophic cardiomyopathy, and heart failure have attracted much attention as the main clinical implications. Furthermore, international standards for CMD diagnosis and management may be the future research directions. CONCLUSIONS This study offers a comprehensive view about the hotspots and development trends of CMD, which can assist subsequent researchers and guide future directions.
Collapse
Affiliation(s)
- Jing Gao
- Department of Cardiology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
- Graduate School, Beijing University of Chinese Medicine, Beijing, China
| | - Tiantian Meng
- Department of Cardiology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Min Li
- Department of Cardiology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Ruolin Du
- Department of Cardiology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Jingyi Ding
- Department of Cardiology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Anqi Li
- Department of Cardiology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Shanshan Yu
- Graduate School, Henan University of Chinese Medicine, Zhengzhou, Henan, China
| | - Yixiang Li
- Graduate School, Henan University of Chinese Medicine, Zhengzhou, Henan, China
| | - Qingyong He
- Department of Cardiology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China.
| |
Collapse
|
14
|
Li YH, Wu MH, Lee WJ, Lee IT. A Synergistic Effect between Plasma Dickkopf-1 and Obstructive Coronary Artery Disease on the Prediction of Major Adverse Cardiac Events in Patients with Angina: An Observational Study. Biomolecules 2022; 12:biom12101408. [PMID: 36291617 PMCID: PMC9599804 DOI: 10.3390/biom12101408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 09/19/2022] [Accepted: 09/29/2022] [Indexed: 11/25/2022] Open
Abstract
The canonical β-catenin-dependent wingless (Wnt) pathway is associated with endothelial function. We examined the effect of plasma dickkopf-1 (DKK-1), an inhibitor of the Wnt pathway, on the prediction of major adverse cardiac events (MACEs). We enrolled patients who had undergone selective coronary angiography for angina. DKK-1 levels were determined using plasma collected at the outpatient visit after fasting. MACEs served as the primary endpoint. All 470 enrolled patients were divided into four groups according to their median plasma DKK-1 levels and the presence of obstructive coronary artery disease (CAD). Forty-eight patients reached the primary endpoint during a median follow-up time of 4.8 years. Kaplan–Meier survival analysis indicated that the group with high DKK-1 and obstructive CAD had a significantly higher mortality rate than the other three groups (log-rank test p = 0.001). Compared with the low plasma DKK-1 without significant coronary obstruction group, the high DKK-1 with obstructive CAD group had a hazard ratio of 10.640 (95% confidence interval: 1.350–83.874) for MACEs, as determined by multivariable Cox proportional hazard regression analysis. In conclusion, we observed a synergistic effect between high plasma DKK-1 and obstructive CAD on the prediction of MACEs in patients with angina.
Collapse
Affiliation(s)
- Yu-Hsuan Li
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Taichung Veterans General Hospital, Taichung 407219, Taiwan
- Department of Computer Science & Information Engineering, National Taiwan University, Taipei 106216, Taiwan
| | - Min-Huan Wu
- Bachelor of Science in Senior Wellness and Sport Science, Tunghai University, Taichung 407224, Taiwan
- Senior Life and Innovation Technology Center, Tunghai University, Taichung 407224, Taiwan
- Life Science Research Center, Tunghai University, Taichung 407224, Taiwan
| | - Wen-Jane Lee
- Department of Medical Research, Taichung Veterans General Hospital, Taichung 407219, Taiwan
| | - I-Te Lee
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Taichung Veterans General Hospital, Taichung 407219, Taiwan
- School of Medicine, National Yang Ming Chiao Tung University, Taipei 112304, Taiwan
- School of Medicine, Chung Shan Medical University, Taichung 402306, Taiwan
- Correspondence:
| |
Collapse
|
15
|
Bradley C, Berry C. Definition and epidemiology of coronary microvascular disease. J Nucl Cardiol 2022; 29:1763-1775. [PMID: 35534718 PMCID: PMC9345825 DOI: 10.1007/s12350-022-02974-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Accepted: 02/17/2022] [Indexed: 11/18/2022]
Abstract
Ischemic heart disease remains one of the leading causes of death and disability worldwide. However, most patients referred for a noninvasive computed tomography coronary angiogram (CTA) or invasive coronary angiogram for the investigation of angina do not have obstructive coronary artery disease (CAD). Approximately two in five referred patients have coronary microvascular disease (CMD) as a primary diagnosis and, in addition, CMD also associates with CAD and myocardial disease (dual pathology). CMD underpins excess morbidity, impaired quality of life, significant health resource utilization, and adverse cardiovascular events. However, CMD often passes undiagnosed and the onward management of these patients is uncertain and heterogeneous. International standardized diagnostic criteria allow for the accurate diagnosis of CMD, ensuring an often overlooked patient population can be diagnosed and stratified for targeted medical therapy. Key to this is assessing coronary microvascular function-including coronary flow reserve, coronary microvascular resistance, and coronary microvascular spasm. This can be done by invasive methods (intracoronary temperature-pressure wire, intracoronary Doppler flow-pressure wire, intracoronary provocation testing) and non-invasive methods [positron emission tomography (PET), cardiac magnetic resonance imaging (CMR), transthoracic Doppler echocardiography (TTDE), cardiac computed tomography (CT)]. Coronary CTA is insensitive for CMD. Functional coronary angiography represents the combination of CAD imaging and invasive diagnostic procedures.
Collapse
Affiliation(s)
- Conor Bradley
- British Heart Foundation Glasgow Cardiovascular Research Centre, University of Glasgow, Glasgow, United Kingdom
- NHS Golden Jubilee Hospital, Clydebank, United Kingdom
| | - Colin Berry
- British Heart Foundation Glasgow Cardiovascular Research Centre, University of Glasgow, Glasgow, United Kingdom.
- NHS Golden Jubilee Hospital, Clydebank, United Kingdom.
- British Heart Foundation Glasgow Cardiovascular Research Centre, Institute of Cardiovascular and Medical Sciences, University of Glasgow, 126 University Place, Glasgow, G12 8TA, Scotland, United Kingdom.
| |
Collapse
|
16
|
Zhou J, Onuma Y, Garg S, Kotoku N, Kageyama S, Masuda S, Ninomiya K, Huo Y, Reiber JHC, Tu S, Piek JJ, Escaned J, Perera D, Bourantas C, Yan H, Serruys PW. Angiography derived assessment of the coronary microcirculation: is it ready for prime time? Expert Rev Cardiovasc Ther 2022; 20:549-566. [PMID: 35899781 DOI: 10.1080/14779072.2022.2098117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
INTRODUCTION Non-obstructive coronary arteries (NOCA) are present in 39.7% to 62.4% of patients who undergo elective angiography. Coronary microcirculation (<400 µm) is not visible on angiography therefore functional assessment, invasive or non-invasive plays a prior role to help provide a more personalized diagnosis of angina. AREA COVERED In this review, we revise the pathophysiology, clinical importance and invasive assessment of the coronary microcirculation, and discuss angiography-derived indices of microvascular resistance. A comprehensive literature review over four decades is also undertaken. EXPERT OPINION The coronary microvasculature plays an important role in flow autoregulation and metabolic regulation. Invasive assessment of microvascular resistance is a validated modality with independent prognostic value, nevertheless, its routine application is hampered by the requirement of intravascular instrumentation and hyperaemic agents. The angiography-derived index of microvascular resistance has emerged as a promising surrogate in pilot studies, however, more data are needed to validate and compare the diagnostic and prognostic accuracy of different equations as well as to illustrate the relationship between angiography-derived parameters for epicardial coronary arteries and those for the microvasculature.
Collapse
Affiliation(s)
- Jinying Zhou
- National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Fuwai Hospital, Beijing, China.,Department of Cardiology, National University of Ireland Galway (NUIG), Galway, Ireland
| | - Yoshinobu Onuma
- Department of Cardiology, National University of Ireland Galway (NUIG), Galway, Ireland
| | - Scot Garg
- Department of CardiologyRoyal Blackburn Hospital, Blackburn, United Kingdom
| | - Nozomi Kotoku
- Department of Cardiology, National University of Ireland Galway (NUIG), Galway, Ireland
| | - Shigetaka Kageyama
- Department of Cardiology, National University of Ireland Galway (NUIG), Galway, Ireland
| | - Shinichiro Masuda
- Department of Cardiology, National University of Ireland Galway (NUIG), Galway, Ireland
| | - Kai Ninomiya
- Department of Cardiology, National University of Ireland Galway (NUIG), Galway, Ireland
| | - Yunlong Huo
- PKU-HKUST Shenzhen-Hong Kong Institution, Shenzhen, China; Department of Cardiology, Peking University First Hospital, Beijing, China; Institute of Mechanobiology & Medical Engineering, School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Johan H C Reiber
- Department of Radiology, Leiden University Medical Center, Leiden, The Netherlands
| | - Shengxian Tu
- School of Biomedical Engineering,Biomedical Instrument Institute Shanghai Jiao Tong University, Shanghai, China
| | - Jan J Piek
- Department of Cardiology, Academic Medical Center of Amsterdam, Amsterdam, The Netherlands
| | - Javier Escaned
- Complutense University of Madrid Hospital Clinico San Carlos IDISCC, Madrid, Spain
| | - Divaka Perera
- Cardiovascular Division, King's College London, London, UK
| | - Christos Bourantas
- Department of Cardiology, Barts Heart Centre, Barts Health NHS Trust, London, UK; Centre for Cardiovascular Medicine and Devices, William Harvey Research Institute, Queen Mary University of London, London, UK; Institute of Cardiovascular Sciences, University College London, London, UK
| | - Hongbing Yan
- Chinese Academy of Medical Sciences, Shenzhen, China; Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Fuwai Hospital,, Beijing, China
| | | |
Collapse
|
17
|
Manchanda AS, Kwan AC, Ishimori M, Thomson LEJ, Li D, Berman DS, Bairey Merz CN, Jefferies C, Wei J. Coronary Microvascular Dysfunction in Patients With Systemic Lupus Erythematosus and Chest Pain. Front Cardiovasc Med 2022; 9:867155. [PMID: 35498009 PMCID: PMC9053571 DOI: 10.3389/fcvm.2022.867155] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Accepted: 02/28/2022] [Indexed: 01/19/2023] Open
Abstract
Chest pain is a common symptom in patients with systemic lupus erythematosus, an autoimmune disease that is associated with increased cardiovascular morbidity and mortality. While chest pain mechanisms can be multifactorial and often attributed to non-coronary or non-cardiac cardiac etiologies, emerging evidence suggests that ischemia with no obstructive coronary arteries (INOCA) is a prevalent condition in patients with chest pain and no obstructive coronary artery disease. Coronary microvascular dysfunction is reported in approximately half of SLE patients with suspected INOCA. In this mini review, we highlight the cardiovascular risk assessment, mechanisms of INOCA, and diagnostic approach for patients with SLE and suspected CMD.
Collapse
Affiliation(s)
- Ashley S. Manchanda
- Barbra Streisand Women's Heart Center, Cedars-Sinai Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA, United States
| | - Alan C. Kwan
- Cedars-Sinai Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA, United States
- Biomedical Imaging Research Institute, Cedars-Sinai Medical Center, Los Angeles, CA, United States
- Department of Imaging, Mark Taper Imaging Institute, Cedars-Sinai Medical Center, Los Angeles, CA, United States
| | - Mariko Ishimori
- Division of Rheumatology and Department of Biomedical Sciences, Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, CA, United States
| | - Louise E. J. Thomson
- Department of Imaging, Mark Taper Imaging Institute, Cedars-Sinai Medical Center, Los Angeles, CA, United States
| | - Debiao Li
- Biomedical Imaging Research Institute, Cedars-Sinai Medical Center, Los Angeles, CA, United States
| | - Daniel S. Berman
- Cedars-Sinai Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA, United States
- Biomedical Imaging Research Institute, Cedars-Sinai Medical Center, Los Angeles, CA, United States
- Department of Imaging, Mark Taper Imaging Institute, Cedars-Sinai Medical Center, Los Angeles, CA, United States
| | - C. Noel Bairey Merz
- Barbra Streisand Women's Heart Center, Cedars-Sinai Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA, United States
- Cedars-Sinai Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA, United States
| | - Caroline Jefferies
- Division of Rheumatology and Department of Biomedical Sciences, Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, CA, United States
| | - Janet Wei
- Barbra Streisand Women's Heart Center, Cedars-Sinai Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA, United States
- Cedars-Sinai Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA, United States
- Biomedical Imaging Research Institute, Cedars-Sinai Medical Center, Los Angeles, CA, United States
- *Correspondence: Janet Wei
| |
Collapse
|
18
|
Reynolds HR, Merz CNB, Berry C, Samuel R, Saw J, Smilowitz NR, de Souza ACDA, Sykes R, Taqueti VR, Wei J. Coronary Arterial Function and Disease in Women With No Obstructive Coronary Arteries. Circ Res 2022; 130:529-551. [PMID: 35175840 PMCID: PMC8911308 DOI: 10.1161/circresaha.121.319892] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Ischemic heart disease (IHD) is the leading cause of mortality in women. While traditional cardiovascular risk factors play an important role in the development of IHD in women, women may experience sex-specific IHD risk factors and pathophysiology, and thus female-specific risk stratification is needed for IHD prevention, diagnosis, and treatment. Emerging data from the past 2 decades have significantly improved the understanding of IHD in women, including mechanisms of ischemia with no obstructive coronary arteries and myocardial infarction with no obstructive coronary arteries. Despite this progress, sex differences in IHD outcomes persist, particularly in young women. This review highlights the contemporary understanding of coronary arterial function and disease in women with no obstructive coronary arteries, including coronary anatomy and physiology, mechanisms of ischemia with no obstructive coronary arteries and myocardial infarction with no obstructive coronary arteries, noninvasive and invasive diagnostic strategies, and management of IHD.
Collapse
Affiliation(s)
- Harmony R Reynolds
- Sarah Ross Soter Center for Women’s Cardiovascular Research, Leon H. Charney Division of Cardiology, Department of Medicine, New York University Grossman School of Medicine, New York, New York, USA
| | - C. Noel Bairey Merz
- Barbra Streisand Women’s Heart Center, Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Colin Berry
- British Heart Foundation Glasgow Cardiovascular Research Centre, University of Glasgow, G12 8TA, UK, West of Scotland Heart and Lung Centre, Golden Jubilee National Hospital, Glasgow, UK, Department of Cardiology, Queen Elizabeth University Hospital, NHS Greater Glasgow and Clyde Health Board, Glasgow, UK
| | - Rohit Samuel
- Vancouver General Hospital, University of British Columbia, Vancouver, British Columbia, Canada
| | - Jacqueline Saw
- Vancouver General Hospital, University of British Columbia, Vancouver, British Columbia, Canada
| | - Nathaniel R Smilowitz
- Sarah Ross Soter Center for Women’s Cardiovascular Research, Leon H. Charney Division of Cardiology, Department of Medicine, New York University Grossman School of Medicine, New York, New York, USA
| | - Ana Carolina do A.H. de Souza
- Cardiovascular Imaging Program, Departments of Radiology and Medicine (Cardiology), Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Robert Sykes
- British Heart Foundation Glasgow Cardiovascular Research Centre, University of Glasgow, G12 8TA, UK, West of Scotland Heart and Lung Centre, Golden Jubilee National Hospital, Glasgow, UK
| | - Viviany R. Taqueti
- Cardiovascular Imaging Program, Departments of Radiology and Medicine (Cardiology), Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Janet Wei
- Barbra Streisand Women’s Heart Center, Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, California, USA
| |
Collapse
|
19
|
Wentzel JJ, Papafaklis MI, Antoniadis AP, Takahashi S, Cefalo NV, Cormier M, Saito S, Coskun AU, Stone PH. Sex-related differences in plaque characteristics and endothelial shear stress related plaque-progression in human coronary arteries. Atherosclerosis 2021; 342:9-18. [PMID: 34999306 DOI: 10.1016/j.atherosclerosis.2021.12.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 12/08/2021] [Accepted: 12/23/2021] [Indexed: 12/15/2022]
Abstract
BACKGROUND AND AIMS Clinical atherosclerosis manifestations are different in women compared to men. Since endothelial shear stress (ESS) is known to play a critical role in coronary atherosclerosis development, we investigated differences in anatomical characteristics and endothelial shear stress (ESS)-related plaque growth in human coronary arteries in men compared to women. METHODS 1183 coronary arteries (male/female: 944/239) from the PREDICTION study were studied for differences in artery/plaque and ESS characteristics, and ESS-related plaque progression (6-10 months follow-up) among men and women and after stratification for age. All characteristics were derived from IVUS-based vascular profiling and reported per 3 mm-segments (13,030 3-mm-segments (male/female: 10,465/2,565)). RESULTS Coronary arteries and plaques were significantly smaller in females compared to males; but no important differences were observed in plaque burden, ESS and rate of plaque progression. Change in plaque burden was inversely related to ESS (p<0.001) with no difference between women versus men (β: -0.62 ± 0.13 vs -0.68 ± 0.05, p=0.62). However, stratification for age demonstrated that ESS-related plaque growth was more marked in young women compared to men (<55 years, β: -2.02 ± 0.61 vs -0.33 ± 0.10, p=0.007), reducing in magnitude over the age-categories up till 75 years. CONCLUSIONS Coronary artery and plaque size are smaller in women compared to men, but ESS and ESS- related plaque progression were similar. Sex-related differences in ESS-related plaque growth were evident after stratification for age. These observations suggest that although the fundamental processes of atherosclerosis progression are similar in men versus women, plaque progression may be influenced by age within gender.
Collapse
Affiliation(s)
- Jolanda J Wentzel
- Biomedical Engineering, Department of Cardiology, ErasmusMC, University Medical Center Rotterdam, the Netherlands.
| | | | - Antonios P Antoniadis
- Cardiovascular Division, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Saeko Takahashi
- Department of Cardiology, Shonan Kamakura General Hospital, Kamakura, Japan
| | - Nicholas V Cefalo
- Cardiovascular Division, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Michelle Cormier
- Cardiovascular Division, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Shigeru Saito
- Department of Cardiology, Shonan Kamakura General Hospital, Kamakura, Japan
| | - Ahmet U Coskun
- Mechanical and Industrial Engineering, Northeastern University, Boston, MA, USA
| | - Peter H Stone
- Cardiovascular Division, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| |
Collapse
|
20
|
Seitz A, McChord J, Bekeredjian R, Sechtem U, Ong P. Definitions and Epidemiology of Coronary Functional Abnormalities. Eur Cardiol 2021; 16:e51. [PMID: 34950247 PMCID: PMC8674628 DOI: 10.15420/ecr.2021.14] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Accepted: 09/04/2021] [Indexed: 12/25/2022] Open
Abstract
Coronary functional abnormalities are frequent causes of angina pectoris, particularly in patients with unobstructed coronary arteries. There is a spectrum of endotypes of functional coronary abnormalities with different mechanisms of pathology including enhanced vasoconstriction (i.e. coronary artery spasm) or impaired vasodilatation, such as impaired coronary flow reserve or increased microvascular resistance. These vasomotor abnormalities can affect various compartments of the coronary circulation such as the epicardial conduit arteries and/or the coronary microcirculation. Unequivocal categorisation and nomenclature of the broad spectrum of disease endotypes is crucial both in clinical practice as well as in clinical trials. This article describes the definitions of coronary functional abnormalities with currently accepted cut-off values, as well as diagnostic methods to identify and distinguish endotypes. The authors also provide a summary of contemporary data on the prevalence of the different endotypes of coronary functional abnormalities and their coexistence.
Collapse
Affiliation(s)
- Andreas Seitz
- Robert-Bosch-Krankenhaus, Department of Cardiology and Angiology, Stuttgart, Germany
| | - Johanna McChord
- Robert-Bosch-Krankenhaus, Department of Cardiology and Angiology, Stuttgart, Germany
| | - Raffi Bekeredjian
- Robert-Bosch-Krankenhaus, Department of Cardiology and Angiology, Stuttgart, Germany
| | - Udo Sechtem
- Robert-Bosch-Krankenhaus, Department of Cardiology and Angiology, Stuttgart, Germany
| | - Peter Ong
- Robert-Bosch-Krankenhaus, Department of Cardiology and Angiology, Stuttgart, Germany
| |
Collapse
|