…debridement 1. Cleanse with lukewarm tap water or saline; showering the leg is a good option. 2. Apply topical anaesthetic cream under occlusion for 30

…• In patients with pheochromocytoma, cocaine or methamphetamine overdose, prior treatment with alpha blockade is necessary before administering labetalol (risk of elevating blood pressure in these…

…and dyspnea at rest that persists despite administration of diuretics and vasodilators. Clinically, these patients exhibit hypotension—often with a systolic blood pressure less than…

…In the setting of ST elevation myocardial infarction (STEMI), cardiogenic shock most commonly reflects severe left ventricular (LV) dysfunction, accounting for approximately 80% of cases…

…change in symptoms or signs, with or without electrocardiographic changes, and with or without acute elevations in cardiac troponin concentrations. Based on the presenting electrocardiogram…

…not yield ST elevations. It is important to recognize these situations since they should be managed clinically as STEMI. The explanation for this is simple…

…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] …

…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…

…elevation myocardial infarction (STEMI) is an acute coronary syndrome characterized clinically by acute myocardial ischaemic symptoms or equivalent presentations together with persistent ST segment elevation…

…Unstable Angina presents with clinical and/or electrocardiographic signs of myocardial ischemia but lacks this biomarker elevation. With the ubiquitous adoption of hs cTn assays…

…College of Cardiology (ACC) and the European Society for Cardiology (ESC). The chapter will start with basic concepts of NSTEMI and unstable angina and then…

…1 B). Such ST segment elevations are extremely common in all populations. They occur in young, old, healthy and diseased individuals. For example, roughly 90…

…The chain of care in acute STEMI Optimal care for patients with STEMI requires a well coordinated system involving both prehospital and hospital based services…

…criteria for the other leads apply in the absence of left ventricular hypertrophy or left bundle branch block [8, 10]. Characteristics of ST Elevation in…

…a rise and/or fall. A stable elevation indicates chronic myocardial injury . Myocardial injury is not synonymous with myocardial infarction. Cardiac troponin identifies injury to…

…Current guidelines, however, still recommend the use of the J point for assessing acute ischemia ( Third Universal Definition of Myocardial Infarction, Thygesen et al, Circulation…

ECG Video lecture: The ST segment: J point, J 60 point, ST depression & ST elevation

…electrocardiographic feature is the absence of persistent ST segment elevation. This does not imply low risk: patients with NSTE ACS may have substantial myocardial ischaemia…

…communities. Late presentation is clinically important: Within 12 hours of symptom onset: reperfusion therapy is recommended for all patients with a working diagnosis of STEMI…

…is severe blood pressure elevation accompanied by acute hypertension mediated target organ damage (HMOD). The European definition uses BP ≥180/110 mmHg with acute HMOD…

…segment elevation myocardial infarction (STEMI) is a working diagnosis based on persistent ST segment elevation or an equivalent electrocardiographic pattern in a patient with symptoms…

…on ST segment elevation as the key trigger for emergent reperfusion therapy. This approach fails to identify a substantial proportion of patients with acute coronary…

…coexist, diagnosis and classification must integrate haemodynamics with the patient’s clinical context and the results of all relevant investigations. Haemodynamic definition At rest, PH…

…segment elevation in the right precordial leads—and a propensity for life threatening polymorphic ventricular tachycardia (VT) and ventricular fibrillation (VF) in patients with structurally…

…is indicated for the prevention of atherothrombotic events in adult patients with acute coronary syndromes (ACS), including: Unstable angina (UA) Non ST elevation myocardial infarction…

…2031 7. The TIMI risk score for unstable angina/non ST elevation MI: A method for prognostication and therapeutic decision making E M Antman, M…

…there are generally no reliable and safe drugs available for long term heart rate augmentation without undesirable side effects. Drugs, With Doses and Practical Co

…of non ST elevation myocardial infarction cases. Despite their rarity, they remain immediately life threatening; reported in hospital mortality was 42.4% for STEMI associated…

…infarction may manifest as reciprocal ST segment depression rather than apparent ST segment elevation. Posterior involvement is commonly associated with inferior or lateral myocardial infarction…

…be obtained immediately after ROSC in order to identify cases with ST segment elevations, which demand urgent coronary angiography with the intent to perform PCI…

…angiography with the intent of performing PCI. The COACT, PEARL and TOMAHAWK trials studied patients with ROSC who did not display ST segment elevations and…

…sinoatrial pause (sinus pause/arrest): ECG characteristics & clinical implications A sinoatrial arrest occurs when the sinoatrial node does not discharge an impulse for ≥2 seconds…

…Early repolarisation: J point elevation ≥ 1 mm with notching or slurring in the inferolateral leads. See also the Calculators section for QTc formulas and risk…

…regional poison control centre for advice on the treatment threshold and on whether haemodialysis should be considered. Rhabdomyolysis with marked elevation of CK and threatened…

…but high risk patients should be evaluated with angiography earlier. Guidelines recommend the use of validated risk models to estimate the risk of acute myocardial…

…and miscellaneous conditions A novel potentially life threatening cardiac arrhythmia syndrome identified with ECG The ECG may be used to diagnose several cardiac genetic disorders…

…at rest, usually lasting more than 20 minutes; new severe angina; an accelerating pattern with increasing frequency, duration, or severity; a lower threshold for symptom…

…the right atrium and right ventricle are compressed, with elevation of their diastolic pressures. Right sided filling becomes increasingly dependent on the fall in intrathoracic…

…troponin elevation is not specific for myocardial infarction. Other conditions may produce cardiomyocyte injury and elevated troponin, so biomarker interpretation must be integrated with the…

…to invasive coronary angiography (ICA) for excluding non ST segment elevation acute coronary syndrome (NSTE ACS) in patients with a low to intermediate likelihood of…

…with increasing frequency or severity; angina that awakens the patient from sleep. Patients receiving modified antiplatelet therapy require clinical surveillance for both recurrent ischemia and…

…is the most common symptom initiating evaluation for ACS. Features that increase the likelihood of ACS include: Sudden symptoms at rest or with minimal exertion…

…include evaluation for: Hemodynamic instability or cardiogenic shock. Clinical heart failure. Recurrent ischemia or reinfarction. Ventricular tachyarrhythmia. Features suggesting systemic embolization. In patients with recurrent…

…when they are established as the explanation for the presentation. Clinical presentation and symptoms Patients typically present with symptoms suggestive of ACS and troponin elevation…

…injury in patients undergoing either procedure, and postprocedural cTnI elevation correlates with evidence of injury on cardiac magnetic resonance. Interpretation is more difficult when the…

…placed to reveal the ST segment elevations. North American (AHA, ACC) and European (ESC) guidelines recommend that patients presenting with ST segment depressions in V1…

…Acute native vessel thrombosis Stent thrombosis Mechanical complications of myocardial infarction Pericarditis Dynamic recurrence of ST segment elevation is particularly concerning for a new infarction…

…ischemia and infarction Definition and Pathophysiology Unstable angina (UA) is an acute coronary syndrome characterized by myocardial ischaemia occurring at rest or with minimal exertion…

…mixed syndrome, with exertional angina and ST segment depression related to fixed disease, together with rest angina and ST segment elevation caused by spasm. The…

…the concept has important limitations. Although thin capped fibroatheromas may have imaging characteristics associated with rupture, fewer than 5% of such lesions caused a clinical…

…may cause ST segment elevations in V1–V3 that resemble those in Brugada syndrome. This disorder is easy to diagnose with a simple blood test…

…associated with tamponade has an exceptionally poor prognosis. In the vast majority of these cases, the tamponade develops acutely or subacutely. It is uncommon for…

…Patients with NSTE ACS (NSTEMI, unstable angina), on the other hand, may only display ST depressions and/or T wave inversions. STE ACS (ST Elevation…

…population. Troponin levels higher than the 99th percentile of a normal population are considered elevated (abnormal). Criteria for elevated troponins: serial measurements with a rising

…Increased QRS amplitude. Diminished T wave amplitude Osborn like waves. ST segment elevation in leads V1–V2. All degrees of AV block. Sinus node dysfunction…

…(B) Note that the reference level for measuring deviation (elevation or depression) of the ST segment is the PR segment (the terminal portion of the…

…Sinus rhythm. Relatively large T waves in V2 V3, with ST segment elevations. Relative to the R waves, T waves are too large and pointed…

…management strategies. For instance, administering nitroglycerin to alleviate ischemic chest pain may lead to hemodynamic collapse in patients with right ventricular ischemia or infarction. Recognizing…

…had higher crude in hospital and 6 month mortality (up to 18% at 6 months for 1 mm elevation, vs 7.6% with no elevation)…

…least two anatomically contiguous leads. In patients with STEMI, ST segment elevations and pathological Q waves occur in the same leads, which is why pathological…