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Latest revision as of 18:24, 18 March 2025
AMI or Acute Myocardial Infarction is a medical term that refers to the sudden blockage of a coronary artery. This blockage can lead to damage or death of part of the heart muscle, which is known as a heart attack.
Etymology[edit]
The term "myocardial infarction" is derived from the Greek words "myo" (meaning muscle), "cardia" (meaning heart), and "infarction" (meaning tissue death due to lack of blood supply). The term "acute" is used to indicate the sudden onset of symptoms.
Causes[edit]
The most common cause of an AMI is the formation of a blood clot in a coronary artery, which can block the blood supply to the heart muscle. This is often due to atherosclerosis, a condition in which fatty deposits build up on the inner walls of the arteries. Other causes can include a spasm of a coronary artery, which can temporarily reduce blood flow to the heart muscle.
Symptoms[edit]
Symptoms of an AMI can vary, but often include chest pain, shortness of breath, nausea, vomiting, and sweating. The pain is often described as a heavy pressure or squeezing sensation, and can radiate to the arms, neck, jaw, or back. Some people may also experience a sense of impending doom.
Diagnosis[edit]
Diagnosis of an AMI is typically based on the symptoms, electrocardiogram (ECG) findings, and blood tests for cardiac enzymes. An ECG can show changes in the heart's electrical activity that suggest a heart attack. Blood tests can detect increased levels of certain enzymes that are released when heart muscle cells are damaged.
Treatment[edit]
Treatment for an AMI aims to restore blood flow to the heart muscle as quickly as possible. This can be achieved through medications that dissolve blood clots, or through procedures such as angioplasty and stent placement. Medications to manage symptoms and prevent further heart damage are also commonly used.
Prognosis[edit]
The prognosis for an AMI can vary depending on the extent of the heart damage, the patient's overall health, and the timeliness of treatment. With prompt treatment, many people can survive an AMI and go on to live a productive life. However, some people may experience complications such as heart failure or arrhythmias.
