Question

Which of the following findings consistently matches pulmonary function with problems with ventilation?

A) A person with a FEV1 below 80% has a restrictive disorder.
B) A person with a decreased FVC and a normal FEV1 has a restrictive disorder.
C) A person with a decreased FVC and FEV1 has an obstructive disorder.
D) A person with decreased FVC and increased FEV1 has an obstructive disorder.

Answer 1

The correct answer is D) A person with decreased FVC and increased FEV1 has an obstructive disorder. In obstructive lung disorders, there is a narrowing or blockage of the airways, resulting in a decreased FVC and an increased FEV1. This leads to a reduced FEV1/FVC ratio.

Step-by-step explanation:

The correct answer is D) A person with decreased FVC and increased FEV1 has an obstructive disorder.

In obstructive lung disorders, such as asthma and chronic obstructive pulmonary disease (COPD), there is a narrowing or blockage of the airways, making it difficult for air to flow out of the lungs. This results in a decreased forced vital capacity (FVC) and an increased forced expiratory volume in one second (FEV1). The FEV1/FVC ratio is reduced in people with obstructive disorders.

For example, someone with asthma may have difficulty exhaling all the air from their lungs due to bronchial constriction or inflammation, resulting in a decreased FVC. However, they can still exhale air quickly, leading to an increased FEV1. Therefore, the finding in option D matches pulmonary function with problems in ventilation.