Doctor insights on:
Detecting Blocked Coronary Arteries
Cardiac Cath: Still today, the most reliable means of demonstrating "blocked" arteries is cardiac catheterization otherwise known as angiography. Ct scan angiography when done in good hands and experienced centers, is also a reliable test, and if negative, makes it very unlikely that the person has significant disease. ...Read moreSee 1 more doctor answer
Arteries are defined as blood vessels which carry blood away from the heart (to either the body or lungs). Arteries: higher pressure, thicker walls, stretch (pulse) with each heart contraction & deliver blood to the arterioles which control the flow to individual capillaries. Veins are blood vessels which carry blood from capillaries back to the heart (body to right heart; ...Read more
Indirectly/Maybe: An electrocardiogram is a recording of a series of heartbeats in a moment in time. Depending on the severity of the blockage, the symptoms being experienced at the time, whether this was an ekg during exercise or stress or symptoms would all come into play as to the ability of the test to detect blockage. Not the best test but of use in the overall evaluation of cad. Get a complete evaluation. ...Read more
Invasive and non: Coronary blockage is defined as enough narrowing to cause symptoms, or to show up on a stress test. Stress tests look for signs of reduced heart muscle oxygen supply (e.g. Ekg changes during exercise, weak heart squeezing on echo, or nuclear perfusion defects). Angiography ("cardiac cath") is invasive, injecting dye into the arteries to image blockages, and stents can be inserted at the same time. ...Read moreSee 1 more doctor answer
Several: If a cardiologist suspects coronary artery blockage the first step will be a very complete history. A nuclear stress test is a common diagnostic test and cardiac ct angiograms are becoming more common. The next step is usually a diagnostic cardiac catheterizaiton. Also since approximately 80% of coronary artery disease, cad, patients have peripheral vascular disease, pvd, that will need eval to. ...Read moreSee 1 more doctor answer
Yes: By echo I am assuming you are talking about an ultrasound. If that is true, the ultrasound machine is more than capable of detecting occluded vessels (arteries or veins) by an experienced ultrasound technician. The ultrasound is a very valuable tool used by vascular surgeons to help diagnosis disease processes. ...Read more
Which procedure is more useful to detect artery blockage, angiography, CT angiogram, or cardiac catheterization and why?
Usually stress tests: Stress tests are used to see if an artery has severe blockage in it, which prevents adequate blood flow to the heart muscle to meet its energy needs. If abnormal, cardiac cath (i.e. "angiogram) is often needed to invasively image the arteries and see the extent of the problem. ...Read moreSee 1 more doctor answer
Excellent: Ultrasound duplex imaging of the cervical carotid arteries is very good at determining significant arterial narrowing. Changes in the flow patterns of the carotid arteries can also suggest disease in the internal carotid arteries further on in at the skull base even though the arteries themselves cannot be seen at that level. ...Read more
Depends: Some studies suggest that by using carotid duplex and measuring intima media thickness we can detect early coronary artery disease with sensitivity of 85% but low specificity of 39% . It is a good screening test that is not invasive but not very accurate. ...Read moreSee 2 more doctor answers
Can you tell me how precise is a nuclear stress ECG at detecting narrowing of the coronary arteries?
Usually accurate: Nuclear stress test using exercise (tread mill or drug induced tachycardia) as well as resting phases for comparison. Test detects ischemic or infarcted heart muscle which can be correlated with coronary artery supplying that portion of cardiac muscle.Test is considered usually quite accurate. ...Read moreSee 3 more doctor answers
Does act angiography show all blockages to the heart like clogged arteries anywhere and everywhere?
Will a cardiac mri/mra show congested heart failure, blocked arteries, etc? What all will it show?
Can a CT CHEST W/CST. + 3D visualize the coronary arteries well? The connections of the coronary arteries? Help please....
Can a CT CHEST W/CST. + 3D visualize the coronary arteries well? The connections of the coronary arteries?
Yes: The test is excellent for ruling out significant coronary disease. It's not so good for determining the severity of coronary disease in people with known disease or who have stents since the x-ray can't penetrate calcified deposits or metal well enough. But in healthy (non-calcified) vessels, it's very accurate. ...Read moreSee 1 more doctor answer
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