hyperinflation (hy·per·in·fla·tion) (hi"p?r-in-fla´sh?n) excessive inflation or expansion, as of the lungs; called also overinflation. (One symptom of this is the ever expanding ribcage) From <a target=_blank class=ftalternatingbarlinklarge href="http://www.medhelp.org/forums/RespiratoryDisorders/messages/919.html">http://www.medhelp.org/forums/...ders/messages/919.html</a> "Hyperinflated lungs mean air is trapped in the small airways and the lungs appear larger than usual, on the chest X-ray. Hyperinflation is not specific for COPD. It can be seen with asthma and other lung diseases. If it occurs in only one lung, obstruction of the bronchus to that lung should be considered"
See also <a target=_blank class=ftalternatingbarlinklarge href="http://www.medscape.com/viewarticle/516202">http://www.medscape.com/viewarticle/516202</a> which discusses this and the difference between resting hyperinflation and dynamic (during exercise) hyperinflation.
I have never seen the lung reduction surgery recommended for someone with cystic fibrosis.
Article on Pulmonary Hypertension and Cor Pulmonale in COPD <a target=_blank class=ftalternatingbarlinklarge href="http://www.medscape.com/viewarticle/458660_6">http://www.medscape.com/viewarticle/458660_6</a> . Another on the Treatment of Pulmonary Hypertension Related to Disorders of hypoxia at <a target=_blank class=ftalternatingbarlinklarge href="http://www.phassociation.org/Medical/Advances_in_PH/Summer_2005/hypoxia.asp">http://www.phassociation.org/M...ummer_2005/hypoxia.asp</a> . From <a target=_blank class=ftalternatingbarlinklarge href="http://pats.atsjournals.org/cgi/content/full/2/1/12">http://pats.atsjournals.org/cgi/content/full/2/1/12</a> "It is first important to know how many patients with severe COPD have PH and to know to what degree the PH affects them. Despite many uncertainties, studies indicate that 35% of patients with severe COPD have pulmonary artery pressures (Ppa) of more than 20 mm Hg at rest (38). Of those patients without PH at rest, a further 52% will develop PH during exercise (39). Furthermore, other reports propose that 91% of patients with severe COPD have PH (56). Exercise-induced rises in Ppa predict those patients who will eventually develop PH at rest (39), and are probably associated with exercise-induced hypoxia (57). "
I agree with Amy that it is very individual. I would also point out that have cystic fibrosis does not immunize one from asthma and exercise-induced asthma hypoxia is not at all uncommon.
Also I'm sort of surprised by the lack of information you all have been given about the benefits of using O2 early to avoid pulmonary hypertension and Cor Pulmonale. I can't help but wonder if this isn't because folks with cystic fibrosis used to die so early that it wasn't worth putting them on oxygen because years ago it was so freaky to see a little kid on those big tanks (while now we're talking about little tanks on the waists of grownups).
See also <a target=_blank class=ftalternatingbarlinklarge href="http://www.medscape.com/viewarticle/516202">http://www.medscape.com/viewarticle/516202</a> which discusses this and the difference between resting hyperinflation and dynamic (during exercise) hyperinflation.
I have never seen the lung reduction surgery recommended for someone with cystic fibrosis.
Article on Pulmonary Hypertension and Cor Pulmonale in COPD <a target=_blank class=ftalternatingbarlinklarge href="http://www.medscape.com/viewarticle/458660_6">http://www.medscape.com/viewarticle/458660_6</a> . Another on the Treatment of Pulmonary Hypertension Related to Disorders of hypoxia at <a target=_blank class=ftalternatingbarlinklarge href="http://www.phassociation.org/Medical/Advances_in_PH/Summer_2005/hypoxia.asp">http://www.phassociation.org/M...ummer_2005/hypoxia.asp</a> . From <a target=_blank class=ftalternatingbarlinklarge href="http://pats.atsjournals.org/cgi/content/full/2/1/12">http://pats.atsjournals.org/cgi/content/full/2/1/12</a> "It is first important to know how many patients with severe COPD have PH and to know to what degree the PH affects them. Despite many uncertainties, studies indicate that 35% of patients with severe COPD have pulmonary artery pressures (Ppa) of more than 20 mm Hg at rest (38). Of those patients without PH at rest, a further 52% will develop PH during exercise (39). Furthermore, other reports propose that 91% of patients with severe COPD have PH (56). Exercise-induced rises in Ppa predict those patients who will eventually develop PH at rest (39), and are probably associated with exercise-induced hypoxia (57). "
I agree with Amy that it is very individual. I would also point out that have cystic fibrosis does not immunize one from asthma and exercise-induced asthma hypoxia is not at all uncommon.
Also I'm sort of surprised by the lack of information you all have been given about the benefits of using O2 early to avoid pulmonary hypertension and Cor Pulmonale. I can't help but wonder if this isn't because folks with cystic fibrosis used to die so early that it wasn't worth putting them on oxygen because years ago it was so freaky to see a little kid on those big tanks (while now we're talking about little tanks on the waists of grownups).