Health

Want to see a doctor amid COVID-19? Use telehealth

We are being told to stay home and practice social distancing during the COVID-19 pandemic, but where does that leave people with routine doctor appointments? What about someone who notices a lump in her breast? Or has worrisome ...

Diseases, Conditions, Syndromes

Lives behind grim coronavirus numbers

As the coronavirus death toll spirals in country after country, the sheer scale of the pandemic sweeping the globe can sometimes obscure the individual tragedies.

Diseases, Conditions, Syndromes

'A battlefield behind your home': Deaths mount in New York

New York authorities rushed to bring in an army of medical volunteers Wednesday as the statewide death toll from the coronavirus doubled in 72 hours to more than 1,900 and the wail of ambulances in the otherwise eerily quiet ...

Health

BU creates database to track states' coronavirus policies

Researchers and students at the Boston University School of Public Health (BUSPH) have created a COVID-19 US state policy database, tracking steps that each U.S. state has taken to curb the spread of the new coronavirus and ...

Diseases, Conditions, Syndromes

What people with high blood pressure need to know about COVID-19

Many people have concerns about staying healthy during the COVID-19 pandemic. Those with a chronic condition such as high blood pressure—a reading above 130/80—may face an increased risk for severe complications if they ...

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Myocardial infarction (MI) or acute myocardial infarction (AMI), commonly known as a heart attack, results from the interruption of blood supply to a part of the heart, causing heart cells to die. This is most commonly due to occlusion (blockage) of a coronary artery following the rupture of a vulnerable atherosclerotic plaque, which is an unstable collection of lipids (cholesterol and fatty acids) and white blood cells (especially macrophages) in the wall of an artery. The resulting ischemia (restriction in blood supply) and ensuing oxygen shortage, if left untreated for a sufficient period of time, can cause damage or death (infarction) of heart muscle tissue (myocardium).

Classical symptoms of acute myocardial infarction include sudden chest pain (typically radiating to the left arm or left side of the neck), shortness of breath, nausea, vomiting, palpitations, sweating, and anxiety (often described as a sense of impending doom). Women may experience fewer typical symptoms than men, most commonly shortness of breath, weakness, a feeling of indigestion, and fatigue. Approximately one-quarter of all myocardial infarctions are "silent", that is without chest pain or other symptoms.

Among the diagnostic tests available to detect heart muscle damage are an electrocardiogram (ECG), echocardiography, cardiac MRI and various blood tests. The most often used blood markers are the creatine kinase-MB (CK-MB) fraction and the troponin levels. Immediate treatment for suspected acute myocardial infarction includes oxygen, aspirin, and sublingual nitroglycerin.

Most cases of STEMI (ST elevation MI) are treated with thrombolysis or percutaneous coronary intervention (PCI). NSTEMI (non-ST elevation MI) should be managed with medication, although PCI is often performed during hospital admission. In people who have multiple blockages and who are relatively stable, or in a few emergency cases, bypass surgery may be an option, especially in diabetics.

Heart attacks are the leading cause of death for both men and women worldwide. Important risk factors are previous cardiovascular disease, older age, tobacco smoking, high blood levels of certain lipids (triglycerides, low-density lipoprotein) and low levels of high density lipoprotein (HDL), diabetes, high blood pressure, obesity, chronic kidney disease, heart failure, excessive alcohol consumption, the abuse of certain drugs (such as cocaine and methamphetamine), and chronic high stress levels.

This text uses material from Wikipedia licensed under CC BY-SA