…clinical concept Myocardial infarction with non obstructive coronary arteries (MINOCA) describes a clinical presentation in which the patient has symptoms suggestive of acute coronary syndrome…

…70% of women compared with 30–50% of men. Microvascular angina (MVA) is myocardial ischaemia caused by structural or functional abnormalities of the coronary microcirculation…

…a white, platelet rich thrombus. Myocardial vulnerability, largely driven by coronary microvascular dysfunction, also contributes to the extension and severity of ischemic injury. In its…

…of stress myocardial blood flow to resting myocardial blood flow. It provides an integrated measure influenced by epicardial stenosis, diffuse atherosclerosis, and coronary microvascular dysfunction…

…also by the vulnerability of the myocardium and coronary microcirculation. Endothelial dysfunction promotes leukocyte and platelet activation and interaction. Thrombotic debris may worsen microvascular obstruction…

…Mechanisms involving reduced myocardial perfusion include fixed coronary atherosclerosis without plaque rupture, coronary artery spasm, coronary microvascular dysfunction (encompassing endothelial dysfunction, smooth muscle cell dysfunction…

…Mechanism or clinical setting Examples Acute coronary atherothrombosis Plaque disruption or erosion with thrombosis Reduced myocardial perfusion Coronary spasm, microvascular dysfunction, coronary embolism, coronary dissection…

…ventricular failure. Mechanisms of Shock The central consequence of extensive infarction is loss of contractile myocardium, with reduced cardiac output and systemic hypoperfusion. LV failure…

…obstruction. In patients with anginal symptoms and unobstructed or non obstructive coronary arteries, possible mechanisms include microvascular obstruction, endothelial dysfunction and epicardial coronary spasm. The…

…induced angina or ischaemia associated with obstructive epicardial coronary disease. Angina or ischaemia caused by epicardial vasomotor dysfunction or microvascular abnormalities without obstructive epicardial disease…

…imbalance between myocardial oxygen supply and demand. In many cases, the initiating process is plaque disruption with thrombosis; other cases result from spasm, microvascular dysfunction…

…that angiographic blood flow does not always correlate with myocardial perfusion on the microvascular level. This is presumably explained by distal microembolization and dysfunctional microcirculation…

…ischemic heart disease and myocardial infarction are primary drivers, HFpEF is more frequently associated with coronary microvascular dysfunction, though epicardial coronary artery disease frequently coexists…

…highlight a shifting demographic profile in incident HFrEF. Historically dominated by acute myocardial infarction (MI) survivors, the contemporary risk factor profile is increasingly driven by…

…producing progressive narrowing or obstruction of epicardial coronary arteries. Endothelial dysfunction, coronary microvascular disease and vasospasm may coexist with atherosclerosis or may be the dominant…

…of angina may differ between patients. Myocardial ischaemia may result predominantly from obstructive epicardial coronary disease, coronary vasospasm, microvascular dysfunction, or combinations of these mechanisms…

…that symptoms of myocardial ischaemia may arise from obstructive atherosclerotic CAD, coronary microvascular dysfunction or vasospasm. A normal or non obstructive coronary anatomy does not…

…or ventricular tachycardia. Prolonged spasm can cause acute myocardial infarction, including myocardial infarction with non obstructive coronary arteries (MINOCA). Ventricular fibrillation and sudden cardiac death…

…preserved FFR with reduced CFR may indicate coronary microvascular dysfunction or diffuse epicardial disease. Concordantly normal FFR and CFR are associated with an excellent prognosis…

…with increased carotid intima–media thickness, early plaque formation and coronary microvascular dysfunction. Women with RA were reported to have approximately twice the myocardial infarction…

…changes consistent with myocardial infarction/ischemia. Most patients, however, display both ECG changes and symptoms. Troponins and other biomarkers of myocardial necrosis (infarction) Myocardium can…

…performed for acute myocardial infarction. In SVG PCI, slow flow or no reflow rates may reach 15%–20%, substantially exceeding those seen with native vessel…

…oxygen supply from increasing in parallel with oxygen demands. Depending on several factors– including the severity of the stenosis/occlusion, microvascular function, myocardial oxygen extraction…

…and approximately doubles cardiovascular risk on average. Its cardiovascular manifestations include atherosclerotic cardiovascular disease (ASCVD), coronary artery disease (CAD), myocardial infarction, stroke, heart failure (HF)…

…STE ACS (ST Elevation Acute Coronary Syndrome) & STEMI (ST Elevation Myocardial Infarction) Acute coronary syndromes with significant ST segment elevations are classified as STE ACS…

…leads. Localization of myocardial infarction / ischemia is done by using ECG changes to determine the affected area and subsequently the occluded coronary artery (culprit). Figure…

…inflammatory disease of the arterial intima that serves as the fundamental pathophysiological substrate for acute coronary syndromes (ACS), including ST Elevation Myocardial Infarction (STEMI) [1] …

…patients with Non ST Elevation Myocardial Infarction (NSTEMI) and unstable angina (UA), which are collectively referred to as NSTE ACS (Non ST Elevation Acute Coronary…

ECG Myocardial ischemia and infarction Use of ECG in acute coronary syndromes & chest pain patients An ECG must be performed on all patients seeking medical…

…troponin rise, with thresholds differing for PCI and CABG; and At least one additional indicator of new myocardial ischemia or procedural coronary compromise. When preprocedural…

…ACS Classification The clinical spectrum of Acute Coronary Syndromes encompasses Unstable Angina (UA), Non ST Elevation Myocardial Infarction (NSTEMI), and ST Elevation Myocardial Infarction (STEMI)…

…the most current recommendations for the management of acute coronary syndromes with persistent ST segment elevations (i.e STEMI, ST segment elevation acute myocardial infarction)…

…for a type 1 MI. Type 5 MI: Represents a periprocedural myocardial infarction associated with coronary artery bypass grafting (CABG). Clinical Presentation and Symptoms The…

…coronary intervention while limiting major and clinically relevant bleeding. Long term antiplatelet therapy after STEMI is associated with approximately a 25% reduction in recurrent infarction…

…All myocardial infarctions affect the left ventricle. Right ventricular infarction is uncommon but may occur if there is a proximal occlusion in the right coronary…

…Rehabilitation Clinical assessment Rehabilitation begins with patient assessment and ongoing medical surveillance. The programme should account for: The recent myocardial infarction and its clinical course…

…Infarction): Epidemiology, Diagnosis (ECG), Criteria & Management Acute ST Elevation Myocardial Infarction (STEMI) is the most severe manifestation of coronary artery disease. This chapter deals with…

…source material addresses posterior infarction primarily in the context of suspected acute coronary syndrome and acute myocardial ischaemia. Patients may present with acute chest pain…

…discussed in Left bundle branch block and ischemia/infarction). Studies demonstrate that individuals with acute myocardial infarction who do not display bundle branch block on…

…endocardium, typically overlying an akinetic or dyskinetic myocardial segment after myocardial infarction (MI). It is particularly associated with extensive anterior or transmural infarction, apical dysfunction…

…Elevation Myocardial Infarction) in terms of treatment and interventions. As discussed previously, STEMI is the result of a complete and proximal occlusion in a coronary…

…myocardium, as compared with a distally located thrombus. The duration of the ischemia: the longer the duration of the ischemia, the more extensive the infarction…

…also be associated with early death after cardiac transplantation. Myocardial bridging is not itself an atherosclerotic lesion, but it may cause local coronary injury over…

…Death of myocardial cells is referred to as myocardial infarction. Myocardial ischemia in clinical practice: coronary artery disease In clinical practice, myocardial ischemia occurs in…

…a stent thrombosis or restenosis. Type 1 myocardial infarction Definition and pathophysiology Type 1 MI results from acute coronary atherothrombosis. It is usually precipitated by…

…left bundle branch block in myocardial ischemia and infarction A summary of the issues that arise when facing a patient with left bundle branch block…

…aVR and often V1, and does not correspond to a specific coronary anatomic distribution [4, 5]. In contrast to acute myocardial infarction, pericarditis lacks prominent…

…myocardial infarction, or other major adverse cardiovascular events. Complete revascularization is therefore considered an important therapeutic objective, particularly in patients with left ventricular dysfunction and…

Myocardial ischemia and infarction Definition and therapeutic rationale Multivessel coronary artery disease (CAD) refers to clinically significant atherosclerotic disease affecting two or more major epicardial…

Myocardial ischemia and infarction Definition and pathophysiology A chronic total occlusion (CTO) is a complete or nearly complete coronary arterial obstruction that has persisted for…

…1β inhibition Canakinumab reduced inflammatory biomarkers without affecting lipids or other major coronary risk factors. In patients with previous myocardial infarction and residual inflammation…

Myocardial ischemia and infarction Introduction Drug eluting stents (DES) are the predominant device used during percutaneous coronary intervention (PCI). They evolved from balloon angioplasty and…

…with lower five year survival than a more distal lesion. Revascularisation improves myocardial blood flow and angina related health status but does not reverse coronary…

Myocardial ischemia and infarction Procedurer Definition and scope Coronary angiography is an invasive fluoroscopic procedure in which contrast media are injected selectively into the epicardial…

…but not 6 month DAPT, was associated with higher rates of myocardial infarction or stent thrombosis in ACS patients. Extension beyond 12 months DAPT beyond…

ECG Myocardial ischemia and infarction Coronary artery disease (ischemic heart disease) Coronary artery disease, which is synonymous with ischemic heart disease, is the most common…

ECG Myocardial ischemia and infarction Approach to patients with chest pain: differential diagnoses, evaluation and management Chest pain is one of the most common symptoms…

…and occlude. Many acute myocardial infarctions arise from lesions that previously obstructed less than 50% of the lumen. Assessment of total coronary disease burden, including…

Cardiology Myocardial ischemia and infarction Definition and Clinical Role Coronary computed tomographic angiography (CCTA) is a non invasive anatomical examination that depicts the coronary arterial…

…and infarction Definition and pathophysiology Acute coronary syndrome (ACS) comprises a spectrum of clinical presentations caused by suspected acute myocardial ischaemia. It includes patients with…