What is the normal range for forced vital capacity (FVC)?

What is the normal range for forced vital capacity (FVC)?

• A. 2500-3000 mL
• B. 3500-4000 mL
• C. 4500-5000 mL
• D. 5500-6000 mL

Answer: (C)

Forced Vital Capacity (FVC) refers to the maximum amount of air that can be forcibly exhaled after taking the deepest breath possible. The normal range for FVC can vary based on factors such as age, sex, height, and ethnicity, but it typically falls within the range of 3500 to 5000 mL for most healthy adults. Choosing the range of 4500-5000 mL aligns with common clinical standards for healthy young adults. This range allows for the physiological differences that may occur due to variations in population demographics. Selecting this answer helps to recognize how important it is to understand baseline respiratory function when assessing patients for pulmonary health, ensuring accurate diagnosis and appropriate treatments for conditions like obstructive or restrictive lung diseases.

Forced Vital Capacity (FVC) refers to the maximum amount of air that can be forcibly exhaled after taking the deepest breath possible. The normal range for FVC can vary based on factors such as age, sex, height, and ethnicity, but it typically falls within the range of 3500 to 5000 mL for most healthy adults.

Choosing the range of 4500-5000 mL aligns with common clinical standards for healthy young adults. This range allows for the physiological differences that may occur due to variations in population demographics. Selecting this answer helps to recognize how important it is to understand baseline respiratory function when assessing patients for pulmonary health, ensuring accurate diagnosis and appropriate treatments for conditions like obstructive or restrictive lung diseases.