QuestionSBA
QuestionChoice
There would be a reduced forced vital capacity (FVC) in patients with an obstructive lung disorder. The obstruction leads to a decrease in lung airway space, reducing the volume of air that is both inhaled and exhaled.

You would also find an indented exhalation curve on the flow volume loops of patients with an obstructive pulmonary disorder - a narrowed exhalation curve is a classic finding of patients with a restrictive lung disorder.
10001910
d
Normal forced vital capacity (FVC) with a narrowed exhalation curve
QuestionChoice
The forced vital capacity, FVC, is the maximum volume of air that can be exhaled from the lungs.

FVC is lower in patients with an obstructive lung disorder. Obstructive disorders, such as chronic obstructive pulmonary disease (COPD), narrow the patient's airways, decreasing how much air can both enter and leave the lungs.

There is also a classic indented exhalation curve that you would find in patients with obstructive disorders, which is not found in other types of lung pathology.
10001907
a
Reduced forced vital capacity (FVC) with an indented exhalation curve
QuestionChoice
There would be a reduced forced vital capacity (FVC) in patients with an obstructive pulmonary disorder. Obstructive disorders such as asthma and chronic obstructive pulmonary disease (COPD) narrow the airways and increases the air resistance inside them - less air can enter and leave the lungs.

An indented exhalation curve is a classic finding in the flow volume loop of patients with obstructive lung disorders.
10001909
c
Normal forced vital capacity with an indented exhalation curve
QuestionChoice
There would be a reduced forced vital capacity (FVC) in patients with an obstructive disorder, as the narrowing of their airways increases resistance, decreasing the volume of air that can be expelled from the lungs.

However, a narrowed exhalation curve is found in restrictive respiratory diseases such as pulmonary lung fibrosis. In obstructive pulmonary disorders, an indented exhalation curve would be found instead.
10001908
b
Reduced forced vital capacity (FVC) with a narrowed exhalation curve
QuestionChoice
A **decreased** forced vital capacity (FVC) would be found in patients with an obstructive lung disease. This is because airway obstruction increases the resistance to the air inside the lungs, decreasing the volume that can be both inhaled and exhaled.

An indented exhalation curve is a classic finding in a patient with an obstructive respiratory disorder.
10001911
e
Increased forced vital capacity (FVC) with an indented exhalation curve
Concept
Chapter
2693
3987
Flow-volume loops
Topic
132
Respiratory
12928
Which of the following would you expect to see on the flow-volume loop of a patient with an obstructive respiratory disease?
a