2 years ago

What is Inspiratory Capacity (IC)? We created this video to cover the medical definition and provide a brief overview of this topic.
💥Respiratory Therapy Definitions [Glossary] ➜ ➜ ➜ https://bit.ly/3g6s4Pj
💥PFT Basics [Full Guide] ➜ ➜ ➜ https://bit.ly/2A8ZuvQ

➡️ Inspiratory Capacity (IC)
Inspiratory capacity is the sum of two lung volumes
- Tidal volume (VT)
- Inspiratory reserve volume (IRV)

Tidal volume (VT) is the amount of air that is inhaled and exhaled during normal, quiet breathing. Inspiratory Reserve Volume (IRV) is the additional volume of air that can be inhaled forcefully after a normal, quiet inhalation. Combining the two results is the inspiratory capacity. Inspiratory capacity can be measured using spirometry, which is a non-invasive pulmonary function test that records the volume of air inhaled and exhaled over time. During the test, the patient breathes into a spirometer, which measures airflow and volume. The patient is then instructed to take a normal breath, followed by a forceful inhalation.

The difference between the total volume inhaled, and the tidal volume is the inspiratory reserve volume, which, when added to the tidal volume, gives you the inspiratory capacity. Inspiratory capacity is an essential parameter for evaluating lung function and diagnosing respiratory disorders.

➡️ Conditions that may affect inspiratory capacity include:
-- Restrictive lung diseases: These conditions, such as pulmonary fibrosis, sarcoidosis, and obesity-related hypoventilation, reduce lung compliance and may lead to a decrease in inspiratory capacity.
-- Obstructive lung diseases: Conditions like asthma, chronic bronchitis, and emphysema can cause airway obstruction, leading to difficulty in inhaling the maximum amount of air and, consequently, a reduced inspiratory capacity.
-- Neuromuscular diseases: Conditions such as muscular dystrophy, amyotrophic lateral sclerosis (ALS), and myasthenia gravis can impair respiratory muscle function, reducing the ability to inhale forcefully and resulting in a decreased inspiratory capacity.

Inspiratory capacity is a vital parameter in assessing lung function and can help healthcare professionals diagnose and manage various respiratory disorders. Spirometry is the primary method for measuring inspiratory capacity, providing valuable information for understanding a patient's lung mechanics and guiding the most appropriate methods of treatment.

💥Respiratory Therapy Definitions [Glossary] ➜ ➜ ➜ https://bit.ly/3g6s4Pj
💥PFT Basics [Full Guide] ➜ ➜ ➜ https://bit.ly/2A8ZuvQ

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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
0:39 - Tidal volume (VT)
0:46 - Inspiratory Reserve Volume (IRV)
0:58 - Inspiratory Capacity
1:22 - Difference Between the Total Volume
1:41 - Restrictive Lung Diseases
2:01 - Obstructive Lung Diseases
2:18 - Neuromuscular Diseases
2:46 - Spirometry