…artery (LMCA) occlusion is a rare but catastrophic manifestation of acute coronary syndromes. The LMCA supplies a large myocardial territory through the left anterior descending…

…hypertension with or without left ventricular hypertrophy. Among patients with NSTE ACS undergoing angiography, approximately 10% have no critical epicardial stenosis. In some of these…

…larger R waves, which are reciprocal to posterior Q waves. As mentioned above, posterior myocardial infarction may be accompanied by inferior infarction if the occlusion…

…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…

…abrupt reduction in coronary blood flow caused by thrombotic occlusion of a previously atherosclerotic artery. Plaque erosion or rupture exposes thrombogenic material to circulating blood…

…and form of the thrombus, it will occlude the main pulmonary artery or its branches. The larger the thrombus, the more proximal the occlusion and…

…the conventional 12 lead ECG. These situations are as follows: Transmural ischemia located in the posterolateral portion of the left ventricle . Transmural ischemia located in…

…alleviate ischemic chest pain may lead to hemodynamic collapse in patients with right ventricular ischemia or infarction. Recognizing ECG signs of right ventricular involvement is…

…a cerebral artery is occluded due to local atherothrombosis or occlusion due to embolization. Approximately 30% of all ischemic strokes are caused by cardiac embolism…

…a proximal occlusion (in the RCA) which cuts off blood flow to the right ventricle, will also affect the inferior wall of the left ventricle…

…inversion of the T waves. These T waves are called post ischemic T waves and they indicate that the infarction process is more or less…

…occur when atherosclerotic plaques rupture or erode, leading to atherothrombosis and occlusion. This causes severe ischemia and the vast majority of patients experience angina pectoris…

…left ventricular ejection fraction, procedural factors and anticipated outcomes. The supplied material does not describe specific physical signs of CTO or a dedicated physical examination…

…and Pathophysiology Posterior myocardial infarction is myocardial necrosis involving the posterior region of the left ventricle, usually as part of an inferoposterior or posterolateral infarction…

…vasoconstriction of one or more coronary arteries. Epicardial spasm produces a reversible functional occlusion and usually causes transmural ischaemia. The resulting abnormalities in left ventricular…

…coronary artery occlusion can be identified. Injection of contrast media into the ventricle will instead reveal that the apical portion of the left ventricle is…

…and degree of myocardial involvement The anatomical territory, including anterior, inferoposterolateral or right ventricular involvement Pre existing abnormalities such as prior infarction, left bundle branch…

…that applying a 5 minute occlusion reflow cycle repeatedly to the circumflex artery before a 60 minute occlusion of the left anterior descending coronary artery…

…30 days if left untreated. Moreover, the pathophysiology of NSTEMI and unstable angina is very similar: both are due to partial (incomplete) coronary artery occlusions …

…objective, particularly in patients with left ventricular dysfunction and/or MVD. Nevertheless, the optimal extent and timing of intervention depend on the clinical setting, haemodynamic…

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

…tunica adventitia , respectively. Figure 1. Layers of the left ventricular wall, pericardium and ventricular cavity. The endocardium The endocardium lines the atria, ventricles and the…

…in left ventricular depolarization and repolarization, which result in secondary ST T changes. Such ST T changes may mimic (simulate) or mask ischemia. Simulation of…

…left main coronary artery disease . It integrates multiple variables, including the number of lesions, their location, and specific characteristics such as bifurcations, chronic total occlusions…

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

…women or three in men, or at least four drinks for women or five for men on one occasion. Pharmacokinetics and pathophysiology Approximately 95% of…

…colleagues in 2018. This approach seeks to anchor diagnostic and therapeutic decisions in the presence or absence of an acute coronary occlusion, rather than rigid…

…partial occlusion of the artery (i.e. coronary blood flow is not completely obstructed). NSTE ACS typically presents with ST segment depressions and/or T…

…inversions (negative T waves) do not affect the management of cardiac arrest. Recurrent VT or VF after ROSC in a patient with a coronary risk…

…the 99th percentile upper reference limit (URL). The injury is considered acute if there is a documented rise and/or fall of cTn values. However…

…4b and 4c fulfil the criteria for type 1 MI because they represent coronary atherothrombotic events in the setting of a stent thrombosis or restenosis…

…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…

…PAD) is a clinical disorder caused by stenosis or occlusion of the aorta or arteries supplying the limbs. In adults over 40 years of age…

…impaired flow into or out of the stent, stent diameter less than 3 mm, long stent length Large thrombotic burdens increase procedural risk because thrombus…

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

…rupture or erosion leads to thrombus formation and subsequent coronary occlusion. Plaque rupture typically involves a thin, collagen poor fibrous cap overlying a large lipid…

…women, respectively, should be considered abnormal. A common cause of abnormally large T waves is hyperkalemia, which results in high, pointed and asymmetric T waves…

…causing microvascular embolization (i.e occluding smaller vessels downstream). The thrombosis causes occlusion of the artery; blood flow may be partially or completely obstructed. Consequently…

…within an hour of arterial occlusion. The classic clinical constellation is remembered as the “six Ps”: Pain Paresthesia Pallor Pulselessness Poikilothermia, or coldness Paralysis Pain…

…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…

…NSTEMI) or unstable angina (UA), is attributed to the greater extent of ischemia present in STEMI. In STEMI, a complete coronary artery occlusion leads to…

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

…dissection with obstruction of the true lumen Occlusion of a major epicardial artery or bypass graft Side branch occlusion or thrombus Disruption of collateral flow…

…to identify large vessel occlusion, dissection or other vascular pathology CT perfusion Used with an unclear time of onset, a late time window, or when…

…may be falsely normal because of medial sclerosis — in that case add toe pressure measurement. Absolute: ABI < 0.5 or toe pressure < 30…

…linking). Concurrent activation of the coagulation cascade leads to thrombin generation and fibrin deposition, culminating in a partially or fully occlusive intraluminal thrombus [5] . ACS…