…or sudden cardiac death. The resulting extensive ischemia causes immediate myocardial stunning (akinesia) and electrical instability. Fewer than 1% of patients with ST elevation myocardial…

…or severe, myocardial necrosis. It most commonly reflects atherothrombosis: disruption of an atherosclerotic plaque followed by platelet activation and coagulation, with formation of an intraluminal…

…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…

…reperfusion therapy. This approach fails to identify a substantial proportion of patients with acute coronary occlusion (ACO) who present without diagnostic ST elevation, often resulting…

…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…

…waves) do not affect the management of cardiac arrest. Recurrent VT or VF after ROSC in a patient with a coronary risk profile should lead…

…in the leads with the highest ST segment elevation. Figure 2. The electrocardiographic natural course in STEMI (ST elevation myocardial infarction). Inversion of T waves…

…Describes cardiac death in patients with symptoms suggestive of myocardial ischaemia and presumed new ischaemic ECG changes, occurring before cTn values become available or abnormal…

…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…

…subepicardium over several hours. The extent and tempo of injury are influenced by collateral flow, myocardial oxygen consumption, and intermittent occlusion with reperfusion. Prompt reperfusion…

…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…

…pectoris : Symptoms appear primarily during exercise or other situations with increased myocardial load. Symptoms are exacerbated by increasing the level of exertion ( i.e increasing…

…pectoris : Symptoms appear primarily during exercise or other situations with increased myocardial load. Symptoms are exacerbated by increasing the level of exertion ( i.e increasing…

…Asymptomatic and atypical disease Fewer than half of patients with PAD have typical symptoms. Many have impaired walking or a slow gait without describing classic…

…Additional features associated with greater difficulty include a previously failed attempt, a blunt proximal stump, vessel bending, calcification and an occlusion length of at least…

…with ACS. Clinical manifestations therefore commonly include recurrent myocardial ischaemia, recurrent infarction, or acute coronary occlusion. Stent thrombosis may occur within hours or days of…

…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…

…CABG), or percutaneous coronary intervention (PCI), including attempted recanalization of a chronic total coronary occlusion. Angina or ischaemia with non obstructive coronary arteries (ANOCA/INOCA)…

…unexplained drop in arterial pressure. Silent or unrecognized infarction occurs more often in patients without antecedent angina and in those with diabetes and hypertension. Of

… However, T wave inversions that are accompanied by ST segment deviation (either depression or elevation) is representative of ischemia (but in that scenario, it is…

…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…

…of patients with pulmonary embolism or deep vein thrombosis experience a second thrombotic event within 10 years ( Goldhaber et al, Kearon et al ). Epidemiology of…

…occur simultaneously (if both territories are affected by the same artery occlusion). Approximately 30% of patients with posterolateral infarction will also have right ventricular infarction…

…instability or a large area of myocardium at risk. Over 48 hours: urgent PCI is still indicated with continuing ischaemia, shock, serious arrhythmia or acute…

…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…

…patients with intermediate lesions that do not produce physiologically significant flow limitation. The mechanisms are incompletely defined. Proposed contributors include hypercontractility or hypersensitivity of coronary…

…a 60 minute occlusion of the left anterior descending coronary artery (LAD) would reduce the infarct size by 60%, as compared with directly occluding the…

…patients with acute coronary syndromes is permeated by the mantra time is myocardium, which refers to the progressive loss of myocytes following the occlusion of…

…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…

…substantially exceeding those seen with native vessel PCI. Mechanisms The principal mechanism is distal embolization of atheromatous and thrombotic material. Plaque or thrombus may be…

…NSTEMI) since they present with ST segment depressions on the 12 lead ECG (recall that ST segment depression is the hallmark of NSTE ACS/NSTEMI…

…primarily in the context of suspected acute coronary syndrome and acute myocardial ischaemia. Patients may present with acute chest pain or chest pain equivalent symptoms…

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

…Most cases (70%) of takotsubo cardiomyopathy occur in situations with extreme stress, such as car accidents, gun violence, threats, or any situation in which the…

…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…

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

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

…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…

…with PCI. PCI of chronic total occlusion lesions may improve angina and quality of life, but randomized trials have not demonstrated reductions in mortality or…

…coronary occlusion or relatively prolonged moderate ischemia may produce post ischemic stunning. In the absence of infarction, contractile recovery can occur rapidly after reperfusion, with…

…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…

…connective tissue and a very high density of capillaries. The muscle fibers are organized into several sheets that wrap around the ventricle with varying orientation…

…anatomical complexity of CAD, particularly in patients with multivessel disease or left main coronary artery disease . It integrates multiple variables, including the number of lesions…

…limbs or other organs. However, the increased risk in mortality is not completely explained by the increased risk of stroke; people with atrial fibrillation are…

…coronary artery occlusions, and outcomes improved when they were treated as acute STEMI cases. Management of left bundle branch block (LBBB) in patients with acute…

…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…

…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…