scholarly journals Cardiovascular magnetic resonance accurately detects obstructive coronary artery disease in suspected non-ST elevation myocardial infarction: a sub-analysis of the CARMENTA Trial

2021 ◽  
Vol 23 (1) ◽  
Author(s):  
Yvonne J. M. van Cauteren ◽  
Martijn W. Smulders ◽  
Ralph A. L. J. Theunissen ◽  
Suzanne C. Gerretsen ◽  
Bouke P. Adriaans ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
Coronary Artery Disease ◽  
Cardiovascular Magnetic Resonance ◽  
Coronary Artery ◽  
Obstructive Coronary Artery Disease ◽  
Stress Perfusion ◽  
St Elevation ◽  
Artery Disease ◽  
Sensitivity Specificity ◽  
Perfusion Cmr

Abstract Background Invasive coronary angiography (ICA) is still the reference test in suspected non-ST elevation myocardial infarction (NSTEMI), although a substantial number of patients do not have obstructive coronary artery disease (CAD). Early cardiovascular magnetic resonance (CMR) may be a useful gatekeeper for ICA in this setting. The main objective was to investigate the accuracy of CMR to detect obstructive CAD in NSTEMI. Methods This study is a sub-analysis of a randomized controlled trial investigating whether a non-invasive imaging-first strategy safely reduced the number of ICA compared to routine clinical care in suspected NSTEMI (acute chest pain, non-diagnostic electrocardiogram, high sensitivity troponin T > 14 ng/L), and included 51 patients who underwent CMR prior to ICA. A stepwise approach was used to assess the diagnostic accuracy of CMR to detect (1) obstructive CAD (diameter stenosis ≥ 70% by ICA) and (2) an adjudicated final diagnosis of acute coronary syndrome (ACS). First, in all patients the combination of cine, T2-weighted and late gadolinium enhancement (LGE) imaging was evaluated for the presence of abnormalities consistent with a coronary etiology in any sequence. Hereafter and only when the scan was normal or equivocal, adenosine stress-perfusion CMR was added. Results Of 51 patients included (63 ± 10 years, 51% male), 34 (67%) had obstructive CAD by ICA. The sensitivity, specificity and overall accuracy of the first step to diagnose obstructive CAD were 79%, 71% and 77%, respectively. Additional vasodilator stress-perfusion CMR was performed in 19 patients and combined with step one resulted in an overall sensitivity of 97%, specificity of 65% and accuracy of 86%. Of the remaining 17 patients with non-obstructive CAD, 4 (24%) had evidence for a myocardial infarction on LGE, explaining the modest specificity. The sensitivity, specificity and overall accuracy to diagnose ACS (n = 43) were 88%, 88% and 88%, respectively. Conclusion CMR accurately detects obstructive CAD and ACS in suspected NSTEMI. Non-obstructive CAD is common with CMR still identifying an infarction in almost one-quarter of patients. CMR should be considered as an early diagnostic approach in suspected NSTEMI. Trial registration. The CARMENTA trial has been registered at ClinicalTrials.gov with identifier NCT01559467.

scholarly journals Takotsubo Syndrome Associated with ST Elevation Myocardial Infarction

2019 ◽  
Vol 2019 ◽  
pp. 1-6 ◽  
Author(s):  
Saad Ezad ◽  
Michael McGee ◽  
Andrew J. Boyle
Keyword(s):  
Myocardial Infarction ◽  
Coronary Artery Disease ◽  
Acute Myocardial Infarction ◽  
Coronary Artery ◽  
Wall Motion ◽  
Obstructive Coronary Artery Disease ◽  
Takotsubo Syndrome ◽  
St Elevation ◽  
Wall Motion Abnormalities ◽  
Artery Disease

Background. Takotsubo syndrome is a reversible heart failure syndrome which often presents with symptoms and ECG changes that mimic an acute myocardial infarction. Obstructive coronary artery disease has traditionally been seen as exclusion criteria for the diagnosis of takotsubo; however, recent reports have called this into question and suggest that the two conditions may coexist. Case Summary. We describe a case of an 83-year-old male presenting with chest pain consistent with acute myocardial infarction. The ECG demonstrated anterior ST elevation with bedside echocardiography showing apical wall motion abnormalities. Cardiac catheterisation found an occluded OM2 branch of the left circumflex artery with ventriculography confirming apical ballooning consistent with takotsubo and not in the vascular territory supplied by the occluded epicardial vessel. Repeat echocardiogram 6 weeks later confirmed resolution of the apical wall motion abnormalities consistent with a diagnosis of takotsubo. Discussion. This case demonstrates the finding of takotsubo syndrome in a male patient with acute myocardial infarction. Traditionally, this would preclude a diagnosis of takotsubo; however, following previous reports of takotsubo in association with coronary artery dissection and acute myocardial infarction in female patients, new diagnostic criteria have been proposed which allow the diagnosis of takotsubo in the presence of obstructive coronary artery disease. This case adds to the growing body of literature that suggests takotsubo can coexist with acute myocardial infarction; however, it remains to be elucidated if it is a consequence or cause of myocardial infarction.

P885Cardiovascular events in patients with suspected ST-elevation myocardial infarction and no obstructive coronary artery disease

2019 ◽  
Vol 40 (Supplement_1) ◽  
Author(s):  
H Andersson ◽  
L S Laustsen ◽  
A Laustsen ◽  
F Pedersen ◽  
L E Bang ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
Coronary Artery Disease ◽  
Coronary Artery ◽  
Obstructive Coronary Artery Disease ◽  
St Elevation Myocardial Infarction ◽  
Receiver Operating Curve ◽  
Significant Difference ◽  
St Elevation ◽  
Coronary Procedures ◽  
Artery Disease

Abstract Background Patients with suspected ST-elevation myocardial infarction (STEMI) and no obstructive coronary artery disease (CAD) comprise a heterogeneous group with varying prognoses. Purpose To evaluate the prognostic value of cardiac troponin T (cTnT) in patients with suspected STEMI and no obstructive CAD. Methods Patients with suspected STEMI and no obstructive (<50% diameter stenosis) CAD were consecutively included from 2009–2014. Patients were classified as having normal cTnT, dynamic cTnT elevation, or stationary cTnT elevation. All patients were followed with respect to major adverse cardiovascular events (MACE), cardiovascular readmission, and repeat coronary procedures, until 1 year after discharge. Results The study included 502 patients with suspected STEMI and no obstructive CAD: 165 (33%) had normal cTnT, 293 (58%) had dynamic cTnT elevation and 44 (9%) had stationary cTnT elevation. Within one year after admission, 40 (8%) had MACE, 81 (16%) had cardiovascular readmission, and 8 (2%) underwent repeat coronary procedures. The risk of MACE was elevated in patients with stationary cTnT elevation compared with normal cTnT (OR 13.6, 95% CI 2.3–80.2, p=0.004). There was no statistically significant difference between those with dynamic cTnT elevation and normal cTnT (OR 2.9, 95% CI 0.6–14.0, p=0.189). Adding cTnT pattern to a conventional risk model, area under the receiver operating curve for predicting the 1-year risk of MACE improved significantly (80% vs. 85%, p=0.004, Figure 1). Figure 1 Conclusion In patients with suspected STEMI and no obstructive CAD, cTnT pattern during acute hospitalization is associated with the 1-year risk of MACE and improves risk prediction for the individual patient. Acknowledgement/Funding The Danish Heart Foundation, the A.P. Møller Foundation, the Foundation of Reinholdt W. Jorck and Wife, Rigshospitalet's Research Foundation

scholarly journals A rare cause of acute ST-elevation myocardial infarction: case report of native aortic valve thrombosis

2019 ◽  
Vol 4 (1) ◽  
pp. 1-4
Author(s):  
Gerrie Beekman-van Solkema ◽  
M H Schoots ◽  
G Pundziute-Do Prado
Keyword(s):  
Myocardial Infarction ◽  
Coronary Artery Disease ◽  
Coronary Artery ◽  
Aortic Valve ◽  
Obstructive Coronary Artery Disease ◽  
St Elevation Myocardial Infarction ◽  
Native Aortic Valve ◽  
Valve Thrombosis ◽  
St Elevation ◽  
Artery Disease

Abstract Background One to 13% of all patients with the clinical diagnosis of an acute coronary syndrome (ACS) show no evidence of significant obstructive coronary artery disease on angiography. Less common causes should be considered in those situations. A very rare cause of ACS is native aortic valve thrombosis. Case summary A 69-year-old previously healthy woman presented with acute chest pain. The electrocardiogram showed an anterolateral ST-elevation myocardial infarction (STEMI). She was immediately transferred for primary percutaneous coronary intervention. Shortly after arriving in hospital her condition deteriorated, with development of cardiogenic shock necessitating cardiopulmonary resuscitation. A coronary angiogram was performed during resuscitation that did not reveal any obstructive coronary artery disease. Echocardiography showed no pericardial effusion, no significant left-sided valve pathology, no signs of an aortic dissection or pulmonary embolism. She died of cardiogenic shock of unknown cause. Permission for autopsy was obtained. Pathologic examination revealed a large anterolateral myocardial infarction caused by a mass attached to the bottom of the left coronary cusp of the native aortic valve, which was large enough to occlude the ostium of the left main coronary artery. Microscopic analysis showed a thrombus of unknown origin. The aortic valve itself showed no signs of pathology. Discussion An ST-elevation myocardial infarction due to native aortic valve thrombosis is a rare condition, especially when there are no significant valvular abnormalities. This case demonstrates that thrombosis can develop in an apparently healthy middle-aged woman without any history of thrombotic disease.

P5257Prediction of 12-month cardiovascular event-free survival with regadenoson perfusion cardiovascular magnetic resonance

2019 ◽  
Vol 40 (Supplement_1) ◽  
Author(s):  
H Weiss ◽  
P Behm ◽  
M Gastl ◽  
M Kelm ◽  
F Boenner
Keyword(s):  
Myocardial Infarction ◽  
Coronary Artery Disease ◽  
Cardiovascular Magnetic Resonance ◽  
Coronary Artery ◽  
Magnetic Resonance ◽  
Cardiovascular Events ◽  
Event Free Survival ◽  
Free Survival ◽  
Artery Disease ◽  
Perfusion Cmr

Abstract Background To identify and stratify coronary artery disease (CAD) non-invasively, cardiovascular magnetic resonance (CMR) derived perfusion imaging holds a class Ia recommendation. As Gold standard, hyperemia is induced by an intravenous application of adenosine in a body weight adapted dosage over a constant time. However, adenosin has two disadvantages: 1.) efficacy of adenosine to induce maximal hyperemia via peripheral line is imperfect and 2.) additional adenosine specific effects exclude patients having comorbidities (e.g. AV-blocks and obstructive lung disease). Fortunately, regadenoson as aselective A2A-receptor agonist has the main advantages of being easier to handle (bolus application) and to be not restricted to patients without specific comorbidities. However, there is a lack of comprehensive data on the prognostic value of regadenoson perfusion CMR to predict clinical endpoints. To assess the predictive value of regadenoson perfusion CMR, our hypothesis was, that a “negative” ischemia test result by regadenoson-CMR predicted freedom from MACE at 12 month. Methods 676 patients, with known or suspected CAD with intermediate risk were retrospectively analyzed from May 2015 till December 2016. Cardiovascular risk factors (CVRF) like age, sex, arterial hypertension, dis-/hyperlipidemia, cigarette smoking status and diabetes were documented. All included patients received perfusion CMR (Philips 1.5 Tesla) with regadenoson (0.4 mg) and a positive ischemia test was defined as perfusion defects in ≥1,5 cardiac segments (using the 17-segment model). Major cardiovascular events (MACE) were defined as cardiovascular death, rehospitalisation due to myocardial infarction and rehospitalisation due to revascularization. The follow-up time was 12 month. Results 80,3% (n=543) of all analyzed patients showed negative ischemia testing in CMR and were thus followed up for 12 month. From these patients, 284 (52,3%) had a pre-existing coronary artery disease. The mean age regarding only the patients with negative ischemia was 66 years (65% male and 35% female) with 1,35±1,03 CVRF. The primary endpoint (MACE) occurred in 6 patients (1,1%): 3 (0,6%) died due to cardiovascular events, 1 (0,2%) suffered from a myocardial infarction and 2 (0,4%) received coronary revascularization. Consequently, an event-free survival was correctly predicted in 98,9% of all patients. No undesirable adverse reactions have appeared. Conclusion Regadenoson-CMR predicts a very low MACE-rate and an event-free survival in 98,9% in over 500 patients. In our study, Regadenoson was well tolerated and no side effects were reported.

Sign in / Sign up

Export Citation Format

Share Document