What is Forced Vital Capacity (FVC)? 🫁

What is Forced Vital Capacity (FVC)? This video covers the medical definition and provides a brief overview of this topic.
💥Forced Vital Capacity [Full Guide] ➜ ➜ ➜ https://bit.ly/3g6s4Pj
💥Respiratory Therapy Definitions [Glossary] ➜ ➜ ➜ https://bit.ly/3g6s4Pj

➡️ Forced Vital Capacity (FVC)
The FVC test is usually performed using a spirometer, a device that captures and records the volumes and flow rates of inhaled and exhaled air. During the test, the patient is instructed to inhale maximally to fill the lungs to full capacity and then exhale as quickly and completely as possible into the spirometer. The volume of air expelled during this forceful exhale is recorded as the Forced Vital Capacity.

The test is often done in conjunction with other spirometric measurements like Forced Expiratory Volume in one second (FEV1), which is the volume of air that can be forcibly exhaled in the first second of the FVC maneuver. FVC is evaluated in both absolute terms and as a percentage of predicted normal values, which are calculated based on age, sex, height, and sometimes ethnicity.

This allows healthcare providers to gauge the severity of respiratory impairment in relation to a 'normal' reference population. A decreased FVC could indicate restrictive lung diseases where the lung’s ability to expand is compromised, such as in cases of pulmonary fibrosis or severe obesity.

When FVC is reduced in conjunction with other spirometric indices like FEV1, it could indicate obstructive lung disease like COPD or asthma where airflow is hindered. Interpreting FVC values is not straightforward and should be done in the context of a complete clinical evaluation.

For example, a decreased FVC might not only be due to lung diseases but could also be influenced by muscular weakness, poor test performance, or other non-respiratory conditions. Therefore, it is crucial to integrate FVC results with other diagnostic tests and clinical information for a comprehensive assessment.

The FVC test is considered safe, quick, and non-invasive, but it does require the patient's full cooperation and effort to ensure accurate measurements. It may be contraindicated or used cautiously in individuals with certain conditions like recent eye or abdominal surgery, uncontrolled hypertension, or certain cardiovascular disorders due to the forceful breathing maneuvers involved.

Forced Vital Capacity is a key metric in the assessment of lung function. It provides invaluable information for diagnosing, managing, and monitoring the progress of various respiratory diseases, and is a cornerstone in pulmonary function testing.

💥Forced Vital Capacity [Full Guide] ➜ ➜ ➜ https://bit.ly/3g6s4Pj

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🚑MEDICAL DISCLAIMER
This content is for educational and informational purposes only. It is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Please consult with a physician with any questions that you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you watch in this video. We strive for 100% accuracy, but errors may occur, and medications, protocols, and treatment methods may change over time.

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⏰TIMESTAMPS
0:00 - Intro
0:36 - FVC Test
1:22 - Evaluation
1:47 - Decreased FVC
2:45 - Interpreting FVC

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