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Methacholine Challenge Test Quiz

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Questions and Answers

Which of the following is a common adverse effect of methacholine administration?

Decreased respiratory rate

Increased heart rate

Elevated bronchial secretions (correct)

Hypotension

What is the criteria for a positive methacholine test?

FEV1 drop of 30%

FEV1 drop of 40%

FEV1 drop of 20% (correct)

FEV1 drop of 10%

In which patient population should methacholine testing be used with caution?

Patients with hypertension

Patients with diabetes

Patients taking anticholinesterase inhibitors (correct)

Patients with a history of bronchitis