Search results
Results from the WOW.Com Content Network
Allergic reactions are rare. [1] The use of barium during pregnancy is safe for the baby; however, X-rays may result in harm. [4] Barium sulfate suspension is typically made by mixing barium sulfate powder with water. [1] It is a non-iodinated contrast media. [5] Barium sulfate has been known since the Middle Ages. [6]
Also, the iodinated contrast medium used in contrast CT and contrast radiography can cause allergic reactions, including severe ones. [5] The contrast dye may also be toxic to the kidneys. [7] Because a cannula is inserted, there is also a risk of a cannula site infection, that may cause fevers or redness of the cannula area. [7]
A patient with a history of allergy to contrast may be advised to take medications such as corticosteroids or histamine (H1) blockers before CTA to lessen the risk of allergic reaction or to undergo a different exam that does not call for contrast material injection. [4] [9] Patients should also be well hydrated in order to minimize possible ...
[4] Hypersensitivity towards iodinated contrast agent is associated with increase in histamine and tryptase concentration in blood. [5] Diphenhydramine (Benadryl) 50 mg orally or intravenously one hour before contrast administration can reduce the risk of urticaria, angioedema, and respiratory symptoms. [6]
Within minutes of exposure to an antigen, the immediate hypersensitivity occurs, releasing histamines and lipid mediators which are responsible for the initial allergic reaction response. However, about 4-12 hours after antigen exposure, a cough and wheezing may persist in the patient, along with swelling and redness of the skin.
Other side effects include itchiness, kidney problems, low blood pressure, and allergic reactions. [1] It is not recommended in people who have an iodine allergy. [1] Diatrizoate is an iodinated ionic radiocontrast agent with high osmolality. [2] Diatrizoate was approved for medical use in the United States in 1954. [4]
2 Allergy, intolerance, iodine. 3 comments. 3 Contrast media table. 4 comments. 4 Contrast medium. 2 comments. 5 Excretion of barium sulfate. 2 comments. 6 External ...
An intravenous cannula is required for the administration of iodinated contrast. The typical dose is 30-40 g of iodine (corresponding to 20–30 cc of 370 mg/ml iodine solution). [10] However, for patients at high risk of contrast-induced nephropathy, it is possible to reduce the required amount of contrast using dual energy CT.