Contrast medium reaction
Author:
[notes 1]
This page in a nutshell: In a more severe reaction: |
In case of a contrast medium reaction, anaphylaxis is a more severe allergic reaction whose diagnostic criteria generally include low blood pressure and/or respiratory distress.[2] In anaphylaxis, intramuscularly administered adrenaline is the most important initial therapy.[1] Also, an anesthesiologist or corresponding clinician on duty should be summoned. Oxygen saturation, pulse and blood pressure are monitored.[1]
In general in a contrast medium reaction, the patient should be evaluated for the presence of the following symptoms and be medicated accordingly.[1]
Symptoms[1] | Medication[1] | Route[1] | Dosage[1] | Time to effect[1] | Repeat[1] | |
---|---|---|---|---|---|---|
Adults | Children | |||||
|
Injection of adrenaline | Intramuscular in lateral thigh | 0.3 - 0.5 mg |
|
Less than 5 min | Every 5-10 min if needed |
Asthma | Salbutamol (Ventolin) or own bronchodilator | Inhalation |
|
|
Less than 5 min | Every 10 mins if needed |
Hypoxia | Oxygen | Mask | >5 l/min | Almost immediate | Continuous | |
Altered level of consciousness or hypotension | Volume expander such as Ringer's | IV with pressure | 20mg/kg | Fast | As needed | |
All anaphylaxis cases | Antihistamine such as desloratadine (Clarinex/Aerius) | Oral | 10mg of desloratadine |
|
Within 30-60 minutes | Usually not |
All anaphylaxis cases | Glucocorticoid such as betamethasone | Oral or IV |
|
|
2-3 hours | Usually not |
References
- ↑ 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 . Hypersensitivity reactions against contrast media - Swedish Society of Uroradiology [Swedish: Överkänslighetsreaktioner mot kontrastmedel – SURFs kontrastmedelsgrupp ], 2014-10-17].
- ↑ Kim, Harold; Fischer, David (2011). "Anaphylaxis ". Allergy, Asthma & Clinical Immunology 7 (Suppl 1): S6. doi: . ISSN 1710-1492.
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