ECG Myocardial ischemia and infarction Myocardial ischemia: cellular changes, ECG signs and development of infarction Like all other cells in the human body, cardiac myocytes…

…and infarction ECG Definition and Pathophysiology Acute coronary syndromes (ACS) encompass a spectrum of clinical conditions characterized by a recent change in symptoms or signs…

…between myocardial oxygen demand and blood supply, generally during exertion, emotional stress, or another stressor. Manifestations include angina, other chest discomfort, dyspnoea, or no symptoms…

…syndromes, which may present with recent changes in symptoms or signs, with or without ECG abnormalities and with or without an elevation in cardiac troponin…

…The severity of the symptoms governs the emergency treatment Severe symptoms The following symptoms indicate hyponatraemic encephalopathy and warrant immediate treatment in the absence of…

…is associated with a greater likelihood of cure. When to investigate General indications Patients with suggestive signs, symptoms, or medical histories should undergo appropriate screening…

…50 beats per minute in the first 4 to 6 hours after an acute infarction—patients may develop hypotension and signs of end organ hypoperfusion…

…threatening tachyarrhythmias. Evaluation and Physical Examination Physical examination of a patient on digoxin therapy should focus on identifying signs of heart failure decompensation, which may…

…Symptom burden and functional limitation Evidence of heart failure Haemodynamic stability Diabetes status Renal dysfunction and other important comorbidities Frailty Liver cirrhosis Cognitive function and…

…may cause symptoms and impaired quality of life, contribute to heart failure, and increase the risk of stroke and other thromboembolic events. Subclinical cerebral injury…