What is coronary ct angiography

What is coronary CT angiography? This is a question that many friends do not understand. When many patients with coronary heart disease are treated in the hospital, doctors often recommend that they undergo coronary CT angiography. So what is the role of this examination? Next, let us explain to you what coronary CT angiography is. I hope this question can help everyone better understand it.

The main functions of coronary angiography are to evaluate the course, number and malformation of coronary arteries; to evaluate the presence, severity and range of coronary artery lesions; to evaluate changes in coronary artery functionality, including coronary artery spasm and the presence of collateral circulation; and to take into account the evaluation of left ventricular function at the same time. On this basis, interventional treatment can be performed according to the degree and extent of coronary artery lesions; the effects of coronary artery bypass grafting and interventional treatment can be evaluated; and long-term follow-up and prognosis evaluation can be performed.

For diagnosis purposes:

⒈ Chest pain of unknown cause, which cannot be diagnosed by non-invasive examination and clinically suspected of coronary heart disease.

⒉ Unexplained arrhythmias, such as persistent ventricular arrhythmias or new-onset heart block; coronary angiography is sometimes required to rule out coronary heart disease.

⒊ Unexplained left ventricular failure is mainly seen in dilated cardiomyopathy or ischemic cardiomyopathy. Differentiation between the two often requires coronary angiography.

⒋ Recurrent angina after percutaneous coronary intervention (PCI) or coronary artery bypass grafting.

⒌ Before major surgery for congenital heart disease, valvular disease, etc., patients aged > 50 years are prone to coronary artery malformations or atherosclerosis, and intervention can be performed at the same time as the surgery.

⒍ Asymptomatic but suspected of having coronary heart disease, working in high-risk occupations such as pilots, car drivers, police, athletes and firefighters, or requiring medical insurance.

For treatment purposes:

Once the clinical diagnosis of coronary heart disease is clear, coronary angiography can further clarify the scope and extent of coronary artery lesions and select a treatment plan.

⒈ Stable angina pectoris or old myocardial infarction, poor medical treatment effect, affecting study, work and life.

⒉ For unstable angina pectoris, active and intensive medical treatment is first adopted. Once the condition stabilizes, coronary angiography is actively performed. If medical drug treatment is ineffective, emergency angiography is generally required. For high-risk patients with unstable angina, which is mainly spontaneous, accompanied by obvious ST segment changes on the electrocardiogram and post-infarction angina, coronary angiography can also be performed directly.

⒊ For acute myocardial infarction (AMI) within 6 hours of onset or persistent chest pain more than 6 hours after onset, emergency PCI surgery is planned; if PCI is not possible, patients with contraindications to thrombolysis after AMI should be transferred to a hospital with the necessary conditions. For patients who do not regain canalization after intravenous thrombolysis after AMI, rescue PCI should be sought as appropriate. For patients with uncomplicated AMI, elective coronary angiography should be considered about 1 week after infarction. AMI with complications such as cardiogenic shock and ventricular septal perforation should be treated with vascular reperfusion as early as possible with the help of auxiliary circulation. For patients with highly suspected AMI but unable to be diagnosed, especially those with left bundle branch block, pulmonary embolism, aortic dissection, and pericarditis, coronary angiography can be performed directly to confirm the diagnosis.

⒋ Asymptomatic coronary heart disease, including patients with positive exercise test and obvious risk factors, should undergo coronary angiography.

⒌ CT and other imaging examinations reveal or highly suspect moderate or above coronary artery stenosis or the presence of unstable plaques.

⒍People who are likely to have successful resuscitation from primary cardiac arrest, left main coronary artery lesions, or proximal anterior descending coronary artery lesions are at high risk and should receive early intervention for vascular disease and require coronary artery evaluation.

⒎ After coronary artery bypass grafting or PCI, recurrence of angina pectoris often requires re-evaluation of coronary artery lesions.

What is coronary CT angiography? After reading the above explanation of this question, I think everyone has understood that for patients with coronary heart disease, coronary CT angiography is a very necessary examination, which can allow doctors to understand your condition more clearly and is of great help in formulating treatment plans.