Free PTCE Exam Braindumps (page: 42)

Page 42 of 113

How many grams of NaCl are in 100ml of NS solution?

  1. 0.009
  2. 0.09
  3. 0.9
  4. 9.0

Answer(s): C

Explanation:

Normal saline is a 0.9 (w/v) solution. % w/v is the number of grams/100ml X 100



Which of the following classes of antibiotics should not be taken with either fruit juices or colas?

  1. Macrolides
  2. Penicillins
  3. Quinolones
  4. Sulfas

Answer(s): B

Explanation:

Because of the acidic nature of both fruitjuices and colas, penicillin is inactivated by both.



How many milligrams of atropine sulfate are needed to make 30ml of a 1:200 solution?

  1. 1.5
  2. 15
  3. 150
  4. 1,500

Answer(s): C

Explanation:

Following formula:
Final volume X % (expressed as a decima|)= amount of active ingredient(g). The final volume is 30ml and 1:200 can be expressed as 1/200 or 0.005g. Multiplying 0.15g x 1000mg/g (changing grams to miIIigram...) will yeald 150mg.



Which drug classification may cause rhinitis medicatmentosa with repeated use?

  1. Antihistamines
  2. Corticosteroids
  3. Nasal Decongestants
  4. Xanthime derivatives

Answer(s): C



Page 42 of 113



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