Acute Myocardial Infarction (MI) - The Merck Manuals
Acute myocardial infarction is myocardial necrosis resulting from acute obstruction of a coronary artery. Symptoms include chest discomfort with or without dyspnea, nausea, and/or diaphoresis. Diagnosis is by electrocardiography (ECG) and the presence or absence of biomarkers.
Myocardial ischemia - Symptoms & causes - Mayo Clinic
May 5, 2021 · Myocardial ischemia occurs when blood flow to the heart muscle (myocardium) is obstructed by a partial or complete blockage of a coronary artery by a buildup of plaques (atherosclerosis). If the plaques rupture, you can have a heart attack (myocardial infarction).
Myocardial ischemia - Diagnosis & treatment - Mayo Clinic
May 5, 2021 · Cardiac CT scan. This test can determine if you have a buildup of calcium in your coronary arteries — a sign of coronary atherosclerosis. The heart arteries can also be seen using CT scanning (coronary CT angiogram). More Information.
Myocardial Infarction - StatPearls - NCBI Bookshelf
Aug 8, 2023 · Myocardial infarction (MI), colloquially known as “heart attack,” is caused by decreased or complete cessation of blood flow to a portion of the myocardium. Myocardial infarction may be “silent” and go undetected, or it could be a catastrophic event leading to hemodynamic deterioration and sudden death.[1]
Subendocardial myocardial infarction – GPnotebook
Sep 4, 2024 · Subendocardial myocardial infarction. Non-ST elevation MI (previously termed non-Q wave MI, often referred to as non-STEMI), is an unstable coronary syndrome which is differentiated from unstable angina by a subsequent rise in cardiac enzymes.
Myocardial Infarction: Practice Essentials, Background, Definitions
Usually described as a substernal pressure sensation that also may be characterized as squeezing, aching, burning, or even sharp. In some patients, the symptom is epigastric, with a feeling of...
Acute Myocardial Infarction - StatPearls - NCBI Bookshelf
Sep 3, 2023 · Go to: Continuing Education Activity. Objectives: Identify the signs and symptoms of acute myocardial infarction through comprehensive patient assessment and interpretation of diagnostic findings. Assess the severity and extent of myocardial damage using diagnostic tests such as electrocardiography (ECG), cardiac biomarkers, and imaging modalities.
Myocardial Infarction Treatment & Management - Medscape
Morbidity and mortality from MI are significantly reduced if patients and bystanders recognize symptoms early, activate the emergency medical service (EMS) system, and thereby shorten the time to...
Non-Q Wave Myocardial Infarction: Pathophysiology and
Non-Q wave myocardial infarctions, also known as non-transmural myocardial infarctions or subendocardial myocardial infarctions, have been managed as “mild” coronary events in the past. Substantial evidence now requires modification of this approach.
Interpretation of acute myocardial infarction with persistent ...
Keywords: Myocardial infarction, acute coronary syndrome, cardiac magnetic resonance, ST segment, ... ST-segment depression is usually a sign of subendocardial (non-transmural) ischemia. 1 Whereas ST-segment elevation is an indication for immediate coronary reperfusion, ...