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Cardiopulmonary Anatomy & Physiolo...

7th Edition
Des Jardins + 1 other
ISBN: 9781337794909

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Chapter
Section
BuyFindarrow_forward

Cardiopulmonary Anatomy & Physiolo...

7th Edition
Des Jardins + 1 other
ISBN: 9781337794909
Textbook Problem

Which of the following forced expiratory measurements reflects the status of medium-sized to small-sized airways?

A. FEF200-1200

B. PEFR

C. MVV

D. FEF25%-75%

Summary Introduction

Introduction:

Forced expiratory volume (FEV) can be defined as the amount of air that can be exhaled by an individual during a forced breath. The forced expiratory measurements measure the expiratory volume, flow, and capacities. The condition of the airways is depicted by different pulmonary mechanic measurements such as FEF25-75% and FEF200-1200.

Explanation

Justification for the correct answer:

Option (d) is given as FEF25%-75%. FEF is the flow rate that is observed during the middle 50% of the forced vital capacity. The average measurement of the FEF reflects the condition of medium to small sized airways. Hence, option (d) is correct.

Justification for the incorrect answers:

Option (a) is given as FEF200-1200. This is false as the FEF200-1200 reflects the integrity of the large airway functions. So, it is incorrect.

Option (b) is given as PEFR...

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