Most healthy individuals can tolerate the 320 slice CT scan of the heart, but the actual tolerance is mainly related to factors such as contraindications, history of contrast agent allergies, renal function status, heart rate control, and compliance.
1. Taboos for examination:
Patients with severe arrhythmia and uncontrolled heart failure should not undergo this examination. Before the examination, it is necessary to evaluate whether there are contraindications to the use of contrast agents such as active asthma and hyperthyroidism. Pregnant women should generally avoid undergoing radiation tests.
2. History of Contrast Agent Allergy:
Individuals who have previously been allergic to iodinated contrast agents should be informed in advance of possible allergic reactions such as skin itching and laryngeal edema. Patients with a mild history of allergies can use antihistamines in advance, while those with a severe history of allergies should consider alternative examination options.
3. Renal function status: Patients with renal dysfunction whose serum creatinine clearance rate is less than 30ml/min should be cautious, as contrast agents may worsen renal damage. When patients with diabetes complicated with nephropathy, hydration treatment should be strengthened before and after examination to promote the excretion of contrast agent.
4. Heart rate control:
examination requires a stable heart rate below 65 beats per minute. Patients with frequent premature beats or atrial fibrillation may affect imaging quality. Beta blockers can be used to control heart rate, but individualized evaluation is required for medication in patients with hypotension and asthma.
5. Compatibility requirement:
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