IVUS & PRESSURE WIRE STUDY

IVUS & Pressure Wire Study

Intravascular Ultrasound (IVUS)

This is performed as an extension of the coronary angiogram procedure. It comprises a specialized coronary catheter, with a miniature ultrasound-emitting transducer mounted on the tip, which is threaded over the coronary wire down the coronary artery and generates high resolution cross sectional images of the interior of the arteries and the different layers of the artery wall. The information allows your cardiologist to assess the amount, distribution and composition of the blockage within the artery. The result may also influence the need for further treatment, such as angioplasty (stent placement). After stenting a region of diseased artery, Intravascular Ultrasound (IVUS) can be used to confirm the stent is properly expanded and abutting the artery wall.

Pressure Wire Study

This is a functional, invasive test performed as an extension of the coronary angiogram procedure to assess the importance of blockages. Sometimes, it is difficult to accurately determine the degree of narrowing of the artery, especially if the blockage is of borderline significance (50-70% blockages). Mild or critically narrowed segments of the artery are much easier to appreciate. The pressure wire, which has a pressure sensor near the tip, is threaded down the coronary artery beyond the blockage. The artery is primed by administering nitrate medication, followed by an intravenous infusion or intracoronary bolus of intra-coronary adenosine. These medicines optimise blood flow within the artery. The pressure within the artery, beyond the narrowing, is compared with that in the aorta (main blood vessel). The difference between the two values is expressed as a ratio, called the fractional flow reserve.

If the ratio is >0.8 then the blockage is not significant and does not require treatment with an angioplasty (stenting).

IVUS & Pressure Wire Study
HEART-RELATED ARTICLES
How can snoring affect your heart?
Has your partner ever said you snore? Have they ever mentioned that you sometimes stop breathing when you sleep? If so, you may have sleep apnea, a potentially serious sleep disorder that can have significant consequences for the heart and arteries.
Read More
Article
Is Red Wine Really Good for the Heart?
Is red wine actually good for the heart? The short answer is yes - and no. It depends very much on your personal and familial health history, among other matters. This article will give you a good idea of the risks and rewards of red wine on heart health, but before going out to buy a bottle for health reasons, consult a medical professional. You should not start drinking red wine for health benefits without discussing it with your doctor, but if you already enjoy an occasional glass with your dinner, you may be at reduced risk for some heart-related health issues.
Read More
Article
5 Causes of Chest Pain Unrelated to the Heart
When people get chest pain they often immediately think of their heart. Heart causes of chest pain are the most important to diagnose, so it’s important if you do have chest pain that you come for assessment so we can reach the correct diagnosis, but are all chest pains a result of heart disease? NO!
Read More
 
HAVE A QUESTION OR
NEED A SECOND OPINION?
Book an appointment or a teleconsult now.