…artery occlusion is located. The term culprit – which means "the guilty one" – is used to denote the occluded coronary artery. In the majority of cases…

…specific ST T changes are very common. Non specific ST depressions, T wave inversions (negative T waves) do not affect the management of cardiac arrest…

…or lacunar infarct (occlusion of small penetrating arteries) : This is the most common type of ischaemic stroke, resulting from the occlusion of small penetrating arteries…

…of the Left Ventricle). Regional wall motion abnormalities are defined as regional abnormalities in contractile function. Ischemic heart disease is the most common cause of…

…diagnostic angiography. Collateral vessels may maintain distal perfusion and permit visualization of the vessel beyond the occlusion when the patent donor artery is injected. The…

…is particularly common in older people and in patients with diabetes. The haemodynamic consequences depend on lesion location, severity, length, the presence of multilevel disease…

…and less common causes such as severe pre existing valvular disease or excessive beta blocker or calcium channel blocker exposure. The incidence of cardiogenic shock…

…Disruption of an atherosclerotic plaque may also release atherosclerotic debris downstream, causing microvascular embolization (i.e occluding smaller vessels downstream). The thrombosis causes occlusion of…

…particularly inverted T waves. Below follows a discussion which aims to clarify some of the common misunderstandings. All T waves are illustrated in Figure 18…

…are common risk factors (see Risk factors below). A significant proportion of cases with pulmonary embolism require thrombolysis to dissolve the occlusion. Administration of thrombolysis…

…have been reported, with clusters occurring in the morning within a few hours of awakening. Pain is the most common presenting complaint. The pain is…

…right ventricular free wall rupture and cardiac tamponade. The most common of these are hypotension, low cardiac output and sensitivity to drugs that reduce preload…

…no coronary artery occlusion can be identified. Injection of contrast media into the ventricle will instead reveal that the apical portion of the left ventricle…

…Stent thrombosis Graft occlusion after CABG No reflow despite removal of an apparent epicardial stenosis The clinical consequences depend on the amount of viable myocardium…

…is caused by a complete coronary artery occlusion, which results in the complete stop of blood flow and thus more extensive myocardial ischemia (referred to…

…involve partial occlusions, resulting in subendocardial ischemia and comparatively milder symptoms. For the same reason, patients with STEMI are at higher risk of life threatening…

…with diabetes and becomes more common with advancing age. Presentations without pain may include: Sudden breathlessness Syncope or sudden loss of consciousness Confusion Profound weakness…

…also supplies the inferior left ventricular wall in over 90% of all individuals. Hence, a proximal occlusion (in the RCA) which cuts off blood flow…

…Occurrence of upsloping ST segment depressions with prominent T waves in the majority of the chest leads may indicate an acute occlusion in the LAD…

…formation of thrombi in the left atrial appendage . Such thrombi may leave the appendage and enter the systemic circulation which causes thromboembolic occlusions of arteries…

…is the most common cause of false activations of the catheterization laboratory. LBBB may mask (conceal) ongoing ischemia : LBBB causes severe disturbance of ventricular repolarization…

…rich and less occlusive, often presenting clinically as Non ST Elevation Myocardial Infarction (NSTEMI) rather than STEMI [4] . Calcified Nodules: A less common mechanism (2…

…Clinical features Occlusion of the left main coronary artery (LMCA) abruptly interrupts blood flow to both the left anterior descending (LAD) and left circumflex (LCx…

…ischemia and infarction Definition and conceptual framework Acute coronary occlusion is the abrupt or progressive reduction of coronary blood flow sufficient to produce myocardial ischaemia…

…identification of acute coronary occlusion (Al Zaiti et al, 2023). The proposed transition from the traditional STEMI/NSTEMI/UA classification to the OMI/NOMI approach…

…without significant ST segment elevations on ECG. NSTE ACS is caused by partial occlusion of the artery (i.e. coronary blood flow is not completely…

…infarction The ECG in the assessment of myocardial reperfusion The ECG is an invaluable tool to assess whether an occlusion has been resolved and blood…

…ESC), American College of Cardiology (ACC), American Heart Association (AHA), and World Heart Federation (WHF) collaborated to redefine MI using a biochemical and clinical approach…

…after coronary occlusion and progress over time. Experimentally, necrosis advances from the subendocardium towards the subepicardium over several hours. The extent and tempo of injury…

…and the ensuing atherothrombosis, causes a complete occlusion of the coronary artery. Ischemia will extend from the endocardium to the epicardium in the affected myocardial…

…and the ensuing atherothrombosis, causes a complete occlusion of the coronary artery. Ischemia will extend from the endocardium to the epicardium in the affected myocardial…

…recurrent infarction, or acute coronary occlusion. Stent thrombosis may occur within hours or days of implantation or many months to years later. Recurrent chest pain…

…with CAD. The pathophysiology of refractory angina is heterogeneous. In obstructive CAD, symptoms may result from extensive or diffuse epicardial disease, chronic total occlusion, incomplete…

…Clinical presentation and symptoms Symptoms commonly develop rapidly, often within an hour of arterial occlusion. The classic clinical constellation is remembered as the “six Ps…

…opening of a persistently occluded infarct related artery in a stable and asymptomatic patient is by contrast not recommended [1,5]. STEMI criteria and occlusion…

…cardiovascular death, and progression of atherosclerotic disease in patients with established coronary or other atherosclerotic vascular disease. Antiplatelet therapy is a central component because platelet…

…myocardial ischaemia caused by transient abnormal vasoconstriction of one or more coronary arteries. Epicardial spasm produces a reversible functional occlusion and usually causes transmural ischaemia…

…episodes of more severe myocardial ischemia. Collateral circulation may be very effective in reducing ischemia. Indeed, it may be so efficient that a total occlusion…

…The clinical importance of the finding is related to the extent of myocardium at risk. Occlusion or impaired perfusion in a vessel supplying a large…

…the left in the thorax. This positions the basal portion of the left lateral wall posteriorly in thorax (Figure 1). This area is most frequently…

…or chest pain equivalent symptoms. The ECG assessment remains necessary even when symptoms have improved by the time of medical evaluation, because transient or evolving…

…The standard investigation in acute stroke to identify large vessel occlusion, dissection or other vascular pathology CT perfusion Used with an unclear time of onset…

…and in patients with diabetes or renal failure the index may be falsely normal because of medial sclerosis — in that case add toe pressure measurement…

…total occlusion is an important predictor of incomplete anatomical revascularization with PCI. PCI of chronic total occlusion lesions may improve angina and quality of life…

…encompasses several physiological states. Brief coronary occlusion or relatively prolonged moderate ischemia may produce post ischemic stunning. In the absence of infarction, contractile recovery can…

…coronary artery occlusions. This is discussed in detail in the chapter NSTEMI (Non ST Elevation Myocardial Infarction). Orientation of myocardial fibers The orientation of myocardial…

…s predictive accuracy. The SYNTAX Score remains a cornerstone in the management of complex CAD, providing a structured approach to revascularization strategy. While it has…

…or at least four drinks for women or five for men on one occasion. Pharmacokinetics and pathophysiology Approximately 95% of ingested ethanol undergoes hepatic metabolism…