To prepare for myocardial scan, also called myocardial infusion scan or myocardial scan with mibi, it is advisable to avoid certain foods such as coffee and banana and to discontinue, according to your doctor’s instructions, beta blockers (atenolol, propranolol, metoprolol, bisoprolol), 1 or 2 days before the operation.In patients who cannot stop taking these medications, there is a method to combine medication with the treadmill.
Myocardial scanners are between 1200 and 1400 reais and are used to assess blood flow in the arteries of the heart, being used to assess the presence of infarction in patients with chest pain, at high risk of heart problems or in cases of heart failure, heart transplantation and valvulopathy.
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At first, the person receives an injection of a radioactive substance, needed to form images in the device, that evaluates how blood reaches the heart.Then it is necessary to drink about 3 glasses of water, eat and take a light walk to help the substance accumulate in the area of the heart, thus improving the images obtained during the exam.
The review consists of two steps:
In this last phase there is also the combined modality, where there is a combination of medication and physical exertion, the decision on how this phase of stress will be performed should be made by the doctor performing the examination, after prior evaluation of the patient..
Cardiac evaluation begins 30 to 90 minutes after injection of the radioactive substance and images are obtained using a device that rotates around the patient’s abdomen for approximately 5 minutes.
The test is often done both at rest and under stress, so it can take two days to perform the test, but if they are done on the same day, the test usually begins at rest.
Preparation for the test involves taking care of medications and food:
You should consult your doctor for advice, as you should avoid using high blood pressure medications, such as verapamil and diltiazem, for 48 hours, and beta blockers that eventually decrease your heart rate, and for asthma and bronchitis, such as aminophylline.
In addition, nitrate-based drugs to improve circulation, such as isosorbide and monocordil, should be discontinued within 12 hours of the test, if the doctor believes there will be more benefit than risk in the suspension.
In the 24 hours prior to the test, ingestion of
In addition, any other food or medicine containing caffeine, alcoholic beverages and soft drinks should also be avoided.
Although some doctors may indicate a fast before the test, most recommend a light meal 2 hours before the test.
Risks of myocardial scans are more expected in myocardial scans with pharmacological stress due to the side effects of the drug, which may include:
However, myocardial scans generally have no health consequences and there is no need to stay in the hospital.
In addition, it is important to remember that myocardial scans are contraptions in pregnant or breastfeeding women.