HealthCareMagic is now Ask A Doctor - 24x7 | https://www.askadoctor24x7.com

Get your health question answered instantly from our pool of 18000+ doctors from over 80 specialties
159 Doctors Online

By proceeding, I accept the Terms and Conditions

Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

HCM Blog Instant Access to Doctors
HCM BlogQuestions Answered
HCM Blog Satisfaction

What Does TV And IRV Mean In Lung Conditions?

While having a physical examination, a young male informed his doctor that at age 8 he had lobar pneumonia and pleurisy in his left lung. The physician decided to measure his VC. Describe the apparatus and method used for taking this measurement. Define the following terms used in the description of lung volumes: TV, IRV, ERV, RV, and VC
Tue, 29 Sep 2015
Report Abuse
Pulmonologist,  's  Response
Thanks for your question on Health Care Magic.
I can understand concern.
TV is tidal volume. IRV is inspiratory reserve volume. ERV is expiratory reserve volume. RV is residual volume and VC is vital capacity.
All these are lung volumes and capacities at different phases of respiration (inspiration & expiration).
Since patient is having past history of pneumonia, it is better to check lung condition at present before recruitment. Past history of pneumonia can cause permanent lung damage and decrease in lung functions. So better to check before recruitment.
Volume of air during normal breathing is TV.
Volume of air present in the lungs after deep forceful inspiration is IRV.
Volume of air expired after deep inspiration is ERV.
Volume of air moving in and out after forceful breathing is VC.
Volume of air present in the lungs after forceful expiration is RV.
All these calculations are made by spirometer.
Hope I have solved your query.
Wishing good health to your patient. Thanks.
I find this answer helpful
Disclaimer: These answers are for your information only and not intended to replace your relationship with your treating physician.
This is a short, free answer. For a more detailed, immediate answer, try our premium service [Sample answer]
Share on
 

Related questions you may be interested in


Recent questions on Pneumonia


Loading Online Doctors....
What Does TV And IRV Mean In Lung Conditions?

Thanks for your question on Health Care Magic. I can understand concern. TV is tidal volume. IRV is inspiratory reserve volume. ERV is expiratory reserve volume. RV is residual volume and VC is vital capacity. All these are lung volumes and capacities at different phases of respiration (inspiration & expiration). Since patient is having past history of pneumonia, it is better to check lung condition at present before recruitment. Past history of pneumonia can cause permanent lung damage and decrease in lung functions. So better to check before recruitment. Volume of air during normal breathing is TV. Volume of air present in the lungs after deep forceful inspiration is IRV. Volume of air expired after deep inspiration is ERV. Volume of air moving in and out after forceful breathing is VC. Volume of air present in the lungs after forceful expiration is RV. All these calculations are made by spirometer. Hope I have solved your query. Wishing good health to your patient. Thanks.