Best Answer

FEV1 is the peak during the first second of exhalation only.

User Avatar

Wiki User

12y ago
This answer is:
User Avatar
More answers
User Avatar


3w ago

FEV1 (forced expiratory volume in 1 second) measures the amount of air a person can forcefully exhale in 1 second, which is an indicator of lung function. Peak expiratory flow (PEF) measures the maximum speed at which a person can exhale air during a forced breath, providing information on how well the airways are functioning. Both tests are used in the diagnosis and monitoring of respiratory conditions such as Asthma and COPD.

This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: What is the difference between the FEV1 and peak expiratory flow?
Write your answer...
Still have questions?
magnify glass
Related questions

How do you read a spirogram?

To read a spirogram, look at the flow-volume loop to assess lung function. The size and shape of the loop can indicate if there are any abnormalities such as obstructive or restrictive lung diseases. Key parameters to evaluate include forced vital capacity (FVC), forced expiratory volume in one second (FEV1), and the FEV1/FVC ratio. Patterns such as a decreased FEV1/FVC ratio suggest obstruction, while reduced FVC may indicate restriction.

What is FEF 25-75 percent?


What is FEF 75 percent?

forced expiratory flow

What is FEF 25 75 percent?

forced expiratory flow

What are signs and symptom of asthma?

Wheezing, coughing, chest tightness, shortness of breath. A reduction in peak expiratory flow rate (PEFR) by around 20% or a Forced expiratory volume reduction in one second (FEV1) of 15%. I have Asthma and its hard to breathe, and your throat feels like its going to squash up. So choking, coughing,tightness of your chest and your throat closing up to make you choke. TRUST ME: YOU DO NOT WANT ASTHMA. ITS HORRIBLE.

How accurate are different types of flow meters in measuring FEV1?

Peak flow meters are less accurate in measuring FEV1 compared to spirometers. In general, spirometers are the gold standard for accurately measuring FEV1. Additionally, the accuracy of flow meters can depend on proper technique and calibration.

Difference between laminar air flow and reverse laminar aire flow?

difference between laminar air flow & reverse laminar air flow

What is the basic Difference between flow chart and pseudo-code?

what's the difference between flow chart and structure diagrams and pseudo code

What is net flow?

Net cash flow is the difference between income and expenditure.

What is the net flow?

Net cash flow is the difference between income and expenditure.

What is the driving flow for the flow of electrons in batteries?

potential difference between electrodes

What is the fastest way speed can be expel air from the lungs at a maximum effort?

Peak expiratory flow rate (PEFR)