Get Virtual Care
For Businesses
About Us
A member asked:
How can i tel when i have gone from stage 3 to stage 4 emphasema/copd?
A doctor has provided 1 answer
PFTs: The definition depends on your measurement of the forced expiratory volume in one second and the ratio of it to your forced vital capacity. Less than 30% of predicted puts you in stage iv.
Answered 9/15/2013
4.9k views
Thank
Related Questions
A member asked:
Is it actually true that COPD will turn into emphysema?
A doctor has provided 1 answer
A member asked:
What is the best medication for COPD and why? I do not have emphysema.
4 doctors weighed in across 2 answers
A member asked:
Emphysema vs COPD is an important distinction. How do you know the difference?
12 doctors weighed in across 5 answers
A member asked:
What holiday location can you recommend to help sufferers of COPD and emphysema?
3 doctors weighed in across 2 answers
Didn't find what you're looking for?
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your questionMore of what we treat
Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.
HIPAASecure
SOC 2 Type 2Certified
JCAHOAccredited
Download HealthTap
Video visit and message your doctor
