Which Statement Is True Regarding the "Open Mouth" Technique for Spirometry

question 2

Multiple Choice

Which statement is true regarding the "open mouth" technique for spirometry in children?

• A) Noseclips should not be used.
• B) Some volume may be lost at the beginning of the FVC effort.
• C) The open mouth method produces higher peak expiratory flows.
• D) This is the preferred method for spirometry in those younger than 10 years.

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