Coronary stents are mesh scaffolds that are threaded into arteries and then expanded, usually by inflating a balloon inside the stent, to hold a previously plaque-clogged vessel open. Stents are often employed following angioplasty, in which an unstented balloon is first inflated to widen a clogged or narrowed artery; the stent is then inserted and expanded by another balloon to keep the vessel from renarrowing. Direct stenting [above] opens the artery and implants the stent in one step.


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11 September 2013 Sound Circulation

Angina is one of the most common heart conditions, affecting more than one in a hundred people. Usually limited to pain in the heart muscles, having angina can also be a sign that fibroatheromas are forming – irregularities in the walls of the vital arteries that feed the heart with oxygen. They can cause potentially life threatening blood clots and are notoriously hard to detect because they form inside the walls of the arteries, so outwardly arteries can appear clear and healthy. Ultrasound – the same technology used to see babies in the womb – can provide a view into the artery wall (left). By transforming this image into a computer generated ‘virtual’ artery, fibroatheromas can be pinpointed (right – shown in white). Scientists are now looking for the proteins responsible and may already have found one.

Written by Fred White-Flower


Angina is a type of chest pain caused by reduced blood flow to the heart muscle. Angina (an-JI-nuh or AN-juh-nuh) is a symptom of coronary artery disease. Angina is typically described as squeezing, pressure, heaviness, tightness or pain in your chest. Many people with angina say it feels like someone is standing on their chest.

Angina, also called angina pectoris, can be a recurring problem or a sudden, acute health concern.

Angina is relatively common, but can be hard to distinguish from other types of chest pain, such as the pain or discomfort of indigestion. If you have unexplained chest pain, seek medical attention right away.

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