Ace the CPFT Challenge 2025 – Breathe Easy with Pulmonary Success!

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How can the presence of chest wall abnormalities impact pulmonary function tests?

They may lead to obstructive patterns due to airway resistance

They may lead to restrictive patterns due to impaired lung expansion

The presence of chest wall abnormalities can significantly impact pulmonary function tests by leading to restrictive patterns due to impaired lung expansion. When the chest wall is compromised, whether due to deformities, obesity, or neuromuscular disorders, the ability of the thoracic cavity to expand properly during inhalation is diminished. This restriction affects the lungs' ability to fill with air, resulting in a decrease in total lung capacity (TLC), vital capacity (VC), and other lung volumes.

Since restrictive patterns are characterized by reduced lung volumes, pulmonary function tests will typically show a decrease in these measurements, confirming the presence of a restriction rather than an obstruction in airflow. Therefore, recognizing the role of chest wall abnormalities in creating restrictive pulmonary patterns is crucial for accurate diagnosis and management in respiratory care.

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They have no impact on pulmonary function tests

They cause an increase in lung volumes

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