Author Question: A patient is following an elimination diet to help identify food allergies. After 1 week, the ... (Read 53 times)

Tazate · **on:** Jun 25, 2018

A patient is following an elimination diet to help identify food allergies. After 1 week, the patient's symptoms resolve. What should be planned for this patient?

1. reintroducing the eliminated foods one at a time to determine the allergy
2. resuming the regular pre-elimination diet
3. taking an antihistamine before eating a food that causes a food allergy
4. consuming foods identified as causing allergies for the full week following the elimination diet

Question 2

A patient is suspected of having a hypersensitivity reaction. Which laboratory test result supports this suspicion?

1. patch test with a 1-inch area of erythema
2. eosinophils 2 of the total WBC
3. Coombs indirect showing no agglutination
4. elevated hematocrit level

irishcancer18 · **Reply #1 on:** Jun 25, 2018

Answer to Question 1

Correct Answer: 1

If symptoms improve after an elimination diet, foods are reintroduced one at a time until symptoms recur, indicating allergy to that food. The patient should not resume the pre-elimination diet, take an antihistamine prior to eating a food identified as causing an allergy, or consume foods known to cause an allergic response.

Answer to Question 2

Correct Answer: 1

A patch test assesses a one-inch area impregnated with the allergen and is applied for 48 hours. Absence of a response indicates a negative result. Positive responses are graded from mild erythema in the exposed area to severe papules, vesicles, or ulcerations. The Coombs' indirect test checks the recipient's and donor's blood for antibodies before a blood transfusion. The normal range of the eosinophil count is 14. There is not enough information about the elevated hematocrit level.