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Doctor insights on: How Does Emphysema Reduce The Amount Of Oxygen Which Diffuses Into The Blood

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How does emphysema reduce the amount of oxygen which diffuses into the blood?

How does emphysema reduce the amount of oxygen which diffuses into the blood?

From Destruction: The destruction in the lung tissue from emphysema makes the oxygen harder to cross into the blood because there is less tissue surface left.

With less air sacs to participate in gas exchange, it is harder for oxygen to cross into the blood. Does that make sense?

That's why people should stop smoking. ...Read more

Dr. Mark Ingerman
1 Doctor shared a insight

Copd (Definition)

COPD may include chronic bronchitis, emphysema, or both. Chronic bronchitis is the production of increased mucus caused by inflammation. Bronchitis is considered chronic if you cough and produce excess mucus most days for three months in a year, two years in a row. Emphysema is a disease that damages the air sacs and/or the smallest breathing tubes in the lungs. ...Read more


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How can emphysema reduce the amount of oxygen that diffuses into the blood?

How can emphysema reduce the amount of oxygen that diffuses into the blood?

Destroys the lung: Emphysema causes destruction of lung tissue. The blood vessles in the lung get destroyed in the lung. These vessles carry the blood in the lung to pick up oxygen. If they are destroyed then, oxygen can not get into the blood vessles / blood and you get low oxygen. ...Read more

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At what level is low blood oxygen harmful for children with copd?

At what level is low blood oxygen harmful for children with copd?

See below: Children usually don't have copd, this is a disease of the adult. Children may have congenital lung diseases but the physiology of those is not the same as copd. Blood oxygen levels less than 90% are generally not desired. Hope this helps. ...Read more

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COPD breathlessness gets real bad. I do symbicourt, incruse and a nebulizer with no relief. Blood oxygen is in a he 90's. What more can I do or take.?

COPD breathlessness gets real bad. I do symbicourt, incruse and a nebulizer with no relief. Blood oxygen is in a he 90's. What more can I do or take.?

See below: I would recommend having a follow up with your pulmonologist. You are on good medications. However, if you are having a flare up, you may need more acute treatment. If you are not, then you may need other testing done, such as an ECHO or maybe try pulmonary rehab. I would be happy to discuss further if you need more information. Hope you feel better. ...Read more

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My mom is being hospitalized for pneumonia and a possible blood clot or COPD I'm very worried could it be deadly her oxygen and blood pressure is low?

My mom is being hospitalized for pneumonia and a possible blood clot or COPD I'm very worried could it be deadly her oxygen and blood pressure is low?

Unanswerable: There are just too many unknowns here. I am very sorry to hear of your mother's troubles, but it sounds like she is in the right place and getting the right attention. In these scary scenarios this kind of answer must come from the medical team working with her in person. ...Read more

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Can I have very severe emphysema and need no oxygen?

Can I have very severe emphysema and need no oxygen?

Is possible: It is possible that one can have severe emphysema and not need oxygen. Can have oxygen levels checked with walking as well as at rest to assess need for oxygen. ...Read more

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Is it true that people with emphysema shouldn't breathe 100% oxygen?

Is it true that people with emphysema shouldn't breathe 100% oxygen?

Yes and No: Patients with emphysema are at some risk for developing high carbon dioxide levels (hypercapnea) if given high doses of oxygen. The oxygen will displace the carbon dioxide off of the red blood cell resulting in higher blood levels (haldane effect). However, hypoxia (low oxygen) is more likely to kill a patient than hypercapnea (high co2) so using high dose oxygen may be needed. ...Read more

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Why is it so dangerous to give large amounts of oxygen to a patient with emphysema?

Why is it so dangerous to give large amounts of oxygen to a patient with emphysema?

Not usually: In the late stages of emphysema or copd, patients do not respond normally to stimuli that make normal patients breathe. They only keep breathing in response to low oxygen in their bloodstreams. If they are given too much oxygen, their systems think that they don't need to breathe and they can actually breathe less or stop breathing. This is a rare problem. Oxygen helps most emphysema patients. ...Read more

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Could you exercise on oxygen if you have emphysema and your o2 sat dip to low 90's?

Could you exercise on oxygen if you have emphysema and your o2 sat dip to low 90's?

Yes: As long as your o2 sats stay at 90% or above, your cells will get plenty of oxygen, and you can exercise safely on oxygen.

There is very little increased benefit with o2 sats greater than 90%. The key is to stay above 90%. ...Read more

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A person with emphysema often needs to be given supplemental oxygen, but why is it important?

A person with emphysema often needs to be given supplemental oxygen, but why is it important?

O2 is good.: Long term oxygen therapy has been shown in some trials to improve mortality. It has also been shown in other trials to improve quality of life, reduce depression, improve cognitive function, improve exercise capacity, and reduce frequency of hospitalization. ...Read more

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Is it harder for people with emphysema to get enough oxygen while they're under general anesthesia?

Is it harder for people with emphysema to get enough oxygen while they're under general anesthesia?

Not usually: Room air contains only 21% oxygen. When a patient is under general anesthesia, we can increase the amount of oxygen breathed to 100% if necessary. So even with emphysema, it is rare to have problems receiving enough oxygen. However, patients with emphysema will have a harder time breathing on their own and recovering after surgery and general anesthesia. ...Read more

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I am on supplemental oxygen at night. Can one predict how soon I will need oxygen 24/7? I have severe emphysema.

O2: Really no way to predict it other than to say not smoking and avoiding exposure to smoke will certainly slow that progression down. ...Read more

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Would you consider a dose of 2l of oxygen for treatment emphysema a high dose or low dose?

Would you consider a dose of 2l of oxygen for treatment emphysema a high dose or low dose?

Low: This is low dose oxygen and equal to roughly 27 percent inspired oxygen (we breath 21 percent). ...Read more

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What are the long term affects of lack of oxygen to legs in emphysema?

What are the long term affects of lack of oxygen to legs in emphysema?

Bad: Lack of oxygen in emphysema is general and not localized to one part of the body. Most critical and sensitive parts are brain and heart. If there is additional poor circulation to the legs, lack of oxygen will contribute to leg cramps, leg pain, nerve damage, poor wound healing and gangrene. ...Read more

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Portable oxygen concentrator advice/comparison for overseas purchase to assist my father who has severe emphysema?

Oxygen concentrator: The best place to look is on E-bay but have his physician tell him what liter flow to use based on his disease ...Read more

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Could you tell me what are long term affects of lack of oxygen to legs in emphysema?

Could you tell me what are long term affects of lack of oxygen to legs in emphysema?

Oxygen delivery: Lack of oxygen to any part of the body from any cause may cause ischemia. This causes the cells to do their work via alternate pathways. This causes Lactic Acid buildup pain and eventually cell death. Claudication is a term you may have heard when there is poor circulation to the legs causing pain. The poor circulation reduces the amount of oxygen delivered. ...Read more

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How do you give oxygen to people with advanced emphysema or respiratory distress?

Carefully!: Advanced emphysema and respiratory distress are different. Both may require supplemental oxygen. Respiratory distress may result from many causes other than emphysema and almost always requires extra o2. Pts with severe emphysema or COPD rarely may slow or stop breathing with extra o2 because it takes away their urge to breathe. O2 must be given with extra caution to those pts. ...Read more

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My mom has emphysema and COPD and is on oxygen... Her nose constantly runs and it's always very cold what can we do to stop the drainage...?

My mom has emphysema and COPD and is on oxygen... Her nose constantly runs and it's always very cold what can we do to stop the drainage...?

COPD nose drain: COPD is a difficult to manage problem. Nose running can be related to meds she is on. Please ask her Dr. And tell her team about you observations and concerns. ...Read more

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What is the best natural treatment for Mid Sept emphysema, an RS heart failure I don't have oxygen or bronchodilators, doc refused saying they won't work?

What is the best natural treatment for Mid Sept emphysema, an RS heart failure I don't have oxygen or bronchodilators, doc refused saying they won't work?

Exercise: Graded exercise for respiratory patients is your best bet. You should look for a structured program supervised by an exercise physiologist. We call this "Pulmonary Rehabilitation". If your oxygen saturation drops to ...Read more

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Prognosis for untreated stage 3b non small cell lung cancer with low oxygen sats, diabetes, heart disease, high blood pressure, and emphysema.

Prognosis for untreated stage 3b non small cell lung cancer with low oxygen sats, diabetes, heart disease, high blood pressure, and emphysema.

Very Poor.: Small Cell Lung Cancer is very hard to treat successfully. Spreads very early in its course. If one is lucky enough to be diagnosis before spread cure is possible. ...Read more

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Can emphysema raise or lower blood po2?

Can emphysema raise or lower blood po2?

Usually lower: In emphysema there is loss of normal surface area where air can exchange with blood to absorb oxygen and eliminate co2. Po2 levels typically drop especially with exertion, but may be normal at rest. ...Read more

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Do you cough up blood tinged sputum if you have emphysema?

Blood: Blood in sputum can suggest serious problems, see your doctor for evaluation. ...Read more

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Severe COPD and emphysema. Off prednizone a week ago and been on o2 24/7. What could be the cause of o2 dropping apon getting up. Never did before.

Possible O2 time: The steroids only reduce inflammation. Not improve your oxygen. So possible your lung function severe enough that you may qualify for supplemental o2. Need to have your pft done to determine if your worse or not. Oxygen will improve your survival as well.
Other causes maybe your developing an infection such as pneumonia as well. See your md and test your o2 while walking or at night sleeping. ...Read more

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I had a stress test and my o2 remained at 99% throughout the test. Does that rule out COPD or emphysema?

I had a stress test and my o2 remained at 99% throughout the test. Does that rule out COPD or emphysema?

COPD and stress test: It depends on the "severity" of your copd. Some people are obstructed but have no problem with their oxygen level. You cannot rule out COPD or emphysema just based on a stress test. You can say that if you had copd, it is not that severe since your oxygen remained normal. To rule out copd, one has to undergo pft or pulmonary function tests which would let us know if your airways are obstructed. ...Read more

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Why am I on Zemaria augmentation therapy? Web says to qualify uM should be less than 11 mine is 19.4. I am PiMZ. Have Emphysema, COPD O2 3 lit.

Why am I on Zemaria augmentation therapy? Web says to qualify uM should be less than 11 mine is 19.4. I am PiMZ. Have Emphysema, COPD O2 3 lit.

Complicated: This should be discussed with your lung doc. You may want a second or third opinion lung doc to feel comfortable with the decisions. Life is short and no reason to wait. ...Read more

Dr. Scott Bolhack
3,112 Doctors shared insights

Oxygen (Definition)

Oxygen is a gas that the cells in your body need to work properly. The air we breathe normally has 21% oxygen. A maximum of 100% oxygen can be given. Babies with heart or lung problems may need ...Read more


Dr. Sue Ferranti
498 Doctors shared insights

Emphysema (Definition)

A group of lung diseases that block airflow and make ...Read more