What is the name of the enzyme responsible for the short duration of action of catecholamine ...

What is the name of the enzyme responsible for the short duration of action of catecholamine bronchodilators?
 
  a. Catechol O-methyltransferase (COMT)
  b. Epinephrine dismutase
  c. EDTA
  d. Hyaluronidase

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Q. 2  Short-acting adrenergic bronchodilators are considered what type of agent according to the Na-tional Asthma Education and Prevention Program?
 
  a. Antiinflammatory
  b. Rescue
  c. Controller
  d. Mucolytic

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Q. 3  Which of the following short-acting catecholamines is used for their strong al-pha-1-vasoconstricting effects to reduce swelling in the nose and larynx and to control bleeding during bronchoscopic biopsy?
 
  a. Levophed
  b. Dopamine
  c. Dobutamine
  d. Racemic epinephrine

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Q. 4  A metered dose inhaler of salmeterol delivers which of the following?
 
  a. 131 mcg/puff
  b. 90 mcg/puff
  c. 65 mcg/puff
  d. 25 mcg/puff

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Q. 5  Proventil and Ventolin are brand names for which of the following beta-adrenergic bronchodila-tors?
 
  a. Albuterol
  b. Levalbuterol
  c. Vilanterol
  d. Arformoterol