The cardiac contrast agent is usually excreted from the body within 24 hours, although the exact time is also closely related to the patient’s kidney function and the amount of water consumed. If the patient usually drinks less water or has poor kidney function, the excretion time of the cardiac contrast agent may be prolonged accordingly.
1. After the surgery, the cardiac contrast medium will be excreted within a few hours with the body’s metabolism, and it will be completely excreted in about 1~2 days. After the surgery, the doctor will instruct the patient to drink more water, mainly to increase the amount of urine, thus accelerating the excretion of the contrast medium to the outside. However, the exact time for the cardiac contrast agent to be excreted out of the body is closely related to the dose of the contrast agent and the metabolic ability of the patient’s kidneys.
2. Generally speaking, for CT use, 50~80 ml may be used, and about 20~30 ml is needed for contrast use. For stenting, 70-80 mL is needed, and even more than 100 mL. Generally the more contrast used, the longer it will take to drain.
After the use of cardiac contrast, be sure to drink plenty of water under the guidance of your doctor to help improve the body’s metabolism and promote the rapid expulsion of the contrast agent.