A process of introducing 1 cc or 1 ml of pure contrast media to the patient to check if there is any reaction or adverse effect to the patient.
SENSITIVITY TESTING
How much of pure contrast do you introduce to the patient in sensitivity testing?
1 cc or 1 ml
METHODS OF SENSITIVITY TESTING:
- SCLERAL METHOD
- SUBLINGUAL METHOD
- SUBCUTANEOUS METHOD
- INTRAVENOUS METHOD
introduction of c.m. through the eyes
SCLERAL METHOD
Possible effects of scleral method:
- redness of eyes
- eye irritation
- eye swelling
introduction of c.m. through the tongue
SUBLINGUAL METHOD
Possible effects of sublingual method:
- tongue irritation
- vomiting
- tongue swelling
- salivation
introduction of contrast media through skin
SUBCUTANEOUS METHOD
Possible effects of subcutaneous method:
- dilatation
- vomiting
- salivation
introduction of contrast media through the veins
INTRAVENOUS METHOD
Possible effects of subcutaneous method:
- Itchiness
- nausea
- vomiting
- dizziness
REACTION TO CONTRAST MEDIA:
1.) MILD
2.) MODERATE
3.) SEVERE
4.) FATAL
no treatment is necessary , observation is of greatest importance
MILD
During a mild reaction, the patient may exhibit:
a. “metallic taste” in the mouth
b. Nausea
c. vomiting
d. flushing of skin
e. mild urticaria (hives)
requires some treatment such as
histamine, but patients do not have to be hospitalized
MODERATE
During a moderate reaction, the patient may exhibit:
- mild drop in Blood Pressure
- urticaria of increased severity
requires some hospitalization and are possibly life threatening
SEVERE
During a sever reaction, the patient may exhibit:
- prolong drop in blood pressure
- collapse of circulatory system
- angina (chest pain)
- cardiac arrhythmia
- coma, convulsion, and
paralysis
the rarest type, occurs about one in every 20,000 examinations
FATAL
Fatal reactions to contrast media occurs about _ in every _ examinations
1 in every 20,000 examinations
DRUGS THAT ARE TO BE GIVEN TO THE PATIENT IF THERE IS REACTION:
1.) Ampoule Benadryl (Diphenhydramine HC)
2.) ANTISTINE
3.) Epinephrine
generally administered intramuscularly, commonly used for moderately severe allergic reactions
Ampoule Benadryl (Diphenhydramine HC)
Ampoule Benadryl (Diphenhydramine HC) is generally administered _
intramuscularly
relieves itching and irritation when allergic conditions affect the eye
ANTISTINE
