Definitions & Nornal Values - Spirometry
Normal Values
- Normal values for each data point obtained during spirometry is derived from a predictive equation and is patient specific. The predictive equations require the patient’s gender, height, weight, and age. Some predictive equations also include race.
- Fortunately, nearly all modern spirometers automatically calculate the patient’s predicted values.
- The data point is generally considered normal if it falls within 80% to 120% of what has been predicted.
Definitions
| Total Lung Capacity (TLC) | The maximum amount of air the lung can hold. |
| Vital Capacity (VC) | The maximum amount of air that can be exhaled following a maximum inhalation. |
| Forced Vital Capacity (FVC) | The vital capacity obtained when the subject is blowing out as hard and fast as possible. |
| Residual Volume (RV) | The amount of air remaining in the lungs following a maximum exhalation. |
| Functional Residual Capacity (FRC) | The amount of air remaining in the lungs following a normal exhalation. |
Authors and Sources
Authors and Reviewers
- EKG heart rhythm modules: Thomas O'Brien.
- EKG monitor simulation developer: Steve Collmann
-
12 Lead Course: Dr. Michael Mazzini, MD.
- Spanish language EKG: Breena R. Taira, MD, MPH
- Medical review: Dr. Jonathan Keroes, MD
- Medical review: Dr. Pedro Azevedo, MD, Cardiology
- Last Update: 11/8/2021
Sources
-
Electrocardiography for Healthcare Professionals, 5th Edition
Kathryn Booth and Thomas O'Brien
ISBN10: 1260064778, ISBN13: 9781260064773
McGraw Hill, 2019 -
Rapid Interpretation of EKG's, Sixth Edition
Dale Dublin
Cover Publishing Company -
12 Lead EKG for Nurses: Simple Steps to Interpret Rhythms, Arrhythmias, Blocks, Hypertrophy, Infarcts, & Cardiac Drugs
Aaron Reed
Create Space Independent Publishing -
Heart Sounds and Murmurs: A Practical Guide with Audio CD-ROM 3rd Edition
Elsevier-Health Sciences Division
Barbara A. Erickson, PhD, RN, CCRN -
The Virtual Cardiac Patient: A Multimedia Guide to Heart Sounds, Murmurs, EKG
Jonathan Keroes, David Lieberman
Publisher: Lippincott Williams & Wilkin)
ISBN-10: 0781784425; ISBN-13: 978-0781784429 - Project Semilla, UCLA Emergency Medicine, EKG Training Breena R. Taira, MD, MPH
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