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Cardiopulmonary Anatomy & Physiolo...

7th Edition
Des Jardins + 1 other
ISBN: 9781337794909

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BuyFindarrow_forward

Cardiopulmonary Anatomy & Physiolo...

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

Which of the following forced expiratory measurements is a good index of the integrity of large airway function?

A. FEVT

B. FEF200-1200

C. FEF25%-75%

D. MVV

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, within a specific period of time. Typically, the time used is 1 second. The forced expiratory measurements measure the expiratory volume, flow, and capacities.

Explanation

Justification for the correct answer:

Option (B) is given as FEF200-1200. FEF200-1200 (forced expiratory flow) can be defined as the flow rate of air that takes place between 200-1200 mL (milliliters) of the forced vital capacity (FVC). As a consequence of the inertia involved in the respiratory maneuver, the first 200 mL is exhaled more slowly. It reflects the integrity of the large airway function. Hence, option (B) is correct.

Justification for the incorrect answers:

Option (A) is given as FEVT. This is false as FEVT (forced expiratory volume timed) does not reflect the integrity of large airways...

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