,Question 1 of 273
A 62-year-old is started on allopurinol prophylaxis following his second episode of gout in the past 12
months. What is the mechanism of action of allopurinol?
Promotes excretion of uric acid
Causes the depolymerisation of intracellular microtubules
Uric acid chelator
Inhibits xanthine oxidase
Xanthine oxidase activator
,Question 1 of 273
A 62-year-old is started on allopurinol prophylaxis following his second episode of gout in the past 12
months. What is the mechanism of action of allopurinol?
Promotes excretion of uric acid
Causes the depolymerisation of intracellular microtubules
Uric acid chelator
Inhibits xanthine oxidase
Xanthine oxidase activator
Allopurinol inhibits xanthine oxidase
Xanthine oxidase is responsible for the oxidation of 6-mercaptopurine to 6-thiouric acid
Discuss and give feedback
Allopurinol
, Question 2 of 273
A patient develops a broad complex tachycardia two days following a myocardial infarction.
Intravenous amiodarone is given. Which one of the following best describes the mechanism of
action of amiodarone?
Blocks potassium channels
Shortens QT interval
Blocks sodium channels
Opens sodium channels
Blocks calcium channels
A 62-year-old is started on allopurinol prophylaxis following his second episode of gout in the past 12
months. What is the mechanism of action of allopurinol?
Promotes excretion of uric acid
Causes the depolymerisation of intracellular microtubules
Uric acid chelator
Inhibits xanthine oxidase
Xanthine oxidase activator
,Question 1 of 273
A 62-year-old is started on allopurinol prophylaxis following his second episode of gout in the past 12
months. What is the mechanism of action of allopurinol?
Promotes excretion of uric acid
Causes the depolymerisation of intracellular microtubules
Uric acid chelator
Inhibits xanthine oxidase
Xanthine oxidase activator
Allopurinol inhibits xanthine oxidase
Xanthine oxidase is responsible for the oxidation of 6-mercaptopurine to 6-thiouric acid
Discuss and give feedback
Allopurinol
, Question 2 of 273
A patient develops a broad complex tachycardia two days following a myocardial infarction.
Intravenous amiodarone is given. Which one of the following best describes the mechanism of
action of amiodarone?
Blocks potassium channels
Shortens QT interval
Blocks sodium channels
Opens sodium channels
Blocks calcium channels
