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Doctor insights on: Asthma Oxygen Levels

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My son is 4 and weighs 34lbs he has an upper n lower respiratory infection he also has asthma oxygen level is 91 is that normal?

My son is 4 and weighs 34lbs he has an upper n lower respiratory infection he also has asthma oxygen level is 91 is that normal?

SeekEvaluationToday!: The oxygen saturation of 91% is lower than we like to see generally speaking. Given his history of asthma in addition to his current respiratory infection he really needs to be evaluated either in the pediatrician's office today (or the ED if unable to get appointment). It may be that you just need to increase the frequency of his asthma meds, but only after a thorough evaluation. ...Read more

Dr. Sue Ferranti
3,038 Doctors shared insights

Asthma (Definition)

A disease of the lungs caused by chronic inflammation of the airways most often caused by allergies. This inflammation results in airway swelling and hyperactivity leading to difficulty breathing, shortness of ...Read more


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If you have asthma. Will your oxygen levels be decreased? If it always shows above 98. Most likely you don't have asthma.

If you have asthma. Will your oxygen levels be decreased? If it always shows above 98. Most likely you don't have asthma.

Not usually: People with asthma usually have normal or near normal oxygen level. But you will be in mortal danger when it is gets below 90. Thus a normal oxygen level by pulse oximetry is not the same as good asthma control. ...Read more

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Could I have asthma with normal oxygen levels and normal chest xray?

Could I have asthma with normal oxygen levels and normal chest xray?

Yes: Between episodes an asthma patient will usually have normal blood oxygen levels and chest x-rays. Someone with recurrent episodes over a period of years may have suggestive changes on an x-ray, but the findings are not specific to asthma. ...Read more

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Is it possible to still have asthma with normal oxygen levels and normal chest xray?

Is it possible to still have asthma with normal oxygen levels and normal chest xray?

Yes: If you are not having a flare of your asthma. If flaring, your oxygen level may lower as the flare worsens and your chest x-ray will likely show (if done) hyperexpansion of the lung fields due to air trapping. ...Read more

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What are the symptoms of undiagnosed asthma? I have 100% oxygen levels. Can anxiety trigger an attack?

What are the symptoms of undiagnosed asthma? I have 100% oxygen levels. Can anxiety trigger an attack?

Lots of overlap: Asthma and panic symptoms often have a great deal of similarity including shortness of breath and tightness in one's chest. And for those with asthma, panic can cause an attack prompted by hyperventilation and cascading stress symptoms. Creating a journal of symptom occurence may help your doctor determine whether symptoms are due to asthma or anxiety. ...Read more

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Why would a healthy 24 year old male have an oxygen level of 70%? He does not smoke but does have asthma.

Why would a healthy 24 year old male have an oxygen level of 70%? He does not smoke but does have asthma.

Not possible: If the oxygen level in at 70% (whether pO2 or O2 sat), the person cannot be healthy. Perhaps the problem is with the instrument measuring it. ...Read more

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Can asthma make me exhausted even if my oxygen levels are good?

Can asthma make me exhausted even if my oxygen levels are good?

Asthma: When asthma is poorly controlled it can increase work of breathing: The person will be working harder to move air in and out because the breathing tubes are narrowed. One way to assess if the asthma is well controlled in to do daily peak flow (There are normative data for your gender and your height). The person will need thorough evaluation for asthma ...Read more

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Today in my nursing lab class I was checking my Oxygen level and my level was 58 the first time and we checked it again it was 84. I don't have asthma?

Pulse ox: Unusually low pulse oximetry levels are usually due to equipment malfunction. These errors can be due to taking measurements with cold fingers, finger nail polish over the nail and sensor, or machine error. True oxygen levels in the ranges you have measured would be accompanied by significant impairment in function and awareness. ...Read more

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Can I have asthma even if I have normal oxygen levels and a normal chest xray?

Can I have asthma even if I have normal oxygen levels and a normal chest xray?

Yes: Asthma most often will not have abnormal chest xray findings and unless very severe episode oxygen levels will be ok as well. ...Read more

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Not sure what a normal range for spo2 are as I just had my oxygen levels checked and it's 94spo2, it was 98/99 few days ago, also had to change to a long lasting steroid inhaler for asthma?

Not sure what a normal range for spo2 are as I just had my oxygen levels checked and it's 94spo2, it was 98/99 few days ago, also had to change to a long lasting steroid inhaler for asthma?

Can vary: It can vary but it s still in the 90s. If you are having shortness of breath or wheezing the number would be lower also cold fingers can cause a change in the meters ability to detect accurately. ...Read more

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I am on oxygen for asthma and altitude, but my levels are over 90 all day. I use it at night. Can I ever stop? Heart and lung tests were normal. Is it harmful to use if not needed?

I am on oxygen for asthma and altitude, but my levels are over 90 all day. I use it at night. Can I ever stop? Heart and lung tests were normal. Is it harmful to use if not needed?

Depends: The answer depends on the testing you have had done and the pulmonary dr. Following your case. Some people have good pulse ox reading during the day, but when an overnight pulse ox test is performed they 'desaturate' to low levels that are troublesome, thus oxygen is rx'd for night time use. Check with the prescribing dr. On how your condition is doing, and keep going to follow-up appts. Good luck. ...Read more

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Can one have an asthma attack with a normal peak flow reading equal to 90% or higher along with normal o2/PR level? This seems to be an ongoing issue.

Can one have an asthma attack with a normal peak flow reading equal to 90% or higher along with normal o2/PR level? This seems to be an ongoing issue.

Unlikely asthma: You may probably have VCD, Vocal Cord Dysfunction, a condition that mimics asthma, but peak flow readings would be normal, there are some other subtle clinical differences too. Spirometry with inspiratory curve would be diagnistic / upper airways endoscopy (visualization of the vocal cords), treatment is different, you may want to see your asthma specialist and ENT specialist, good luck ...Read more

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Put on 2 steroids and antibiotic for severe asthma/chronic sinusitis. O2 levels dropped 97 to 79 just walking. Can I drink coffee while on steroids?

Put on 2 steroids and antibiotic for severe asthma/chronic sinusitis. O2 levels dropped 97 to 79 just walking. Can I drink coffee while on steroids?

Uncontrolled severe: Persistent asthma, is what you described, you need more rigorous treatment and follow up, you might need more meds, need to limit your activity for now and avoid all known triggers, steroids can cause gastric inflammation/irritation, you may want to have some gut prophylaxis as well (ranitidine or pantoprazole), please see your doctor again asap and keep close follow up to avoid ER /hospitalization ...Read more

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What should the O2 saturation be for a CO2 level of 33? My mom has COPD, CHF, Asthma, Afib. She has an O2machine at home. Is 5% too high?

What should the O2 saturation be for a CO2 level of 33? My mom has COPD, CHF, Asthma, Afib. She has an O2machine at home. Is 5% too high?

Does not compute.: Your mother's situation is complex & I can't make sense of your question since the O2 saturation measures oxyhemoglobin & CO2 measures carbon dioxide pressure. (They can be unrelated). 5% O2 saturation is TOO LOW - not compatible with life - for arterial blood. Do you mean 5 LPM on the O2 tank? Use HealthTap Prime or TTYD to get correct answers, because there's no way to answer using 400 character ...Read more

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Can I ask for oxygen at home for treating the asthma attacks?

Can I ask for oxygen at home for treating the asthma attacks?

No...: Oxygen is a drug and it is only prescribed if your oxygen level is chronically low enough to warrant it. During an asthma exacerbation, if your oxygen level drops, you need to be evaluated in an er because this is a sign of a life-threatening episode that may need more than supplemental oxygen to treat. Oxygen therapy at home may not be the life-saving treatment you need. ...Read more

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My eldest suffers wiv asthma and they have rwcently axed all piediatric services would it be adviasable too request home oxygen only to be used in 911?

My eldest suffers wiv asthma and they have rwcently axed all piediatric services would it be adviasable too request home oxygen only to be used in 911?

Maybe: Oxygen should only be used under close supervision; some people with asthma may actually get worse or stop breathing on oxygen. Standard treatment for asthma is best, oxygen is really safest to use in a hospital setting. ...Read more

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Is a portable oxygen concentrator okay to use if you suffer with asthma?

Is a portable oxygen concentrator okay to use if you suffer with asthma?

Yes: But not usually necessary for asthma. Only in very severe case of asthma would oxygen be used. Else you are simply wasting money. ...Read more

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Does asthma cause hypoxia? What is the oxygen saturation in people who have asthma?

Does asthma cause hypoxia? What is the oxygen saturation in people who have asthma?

It can: Asthma can reduce the area of the lung available for co2/oxygen exchange and can do so with variable intensity during an asthma attack. Given a normal o2 % of 94-100, I have seen levels below 50% recorded but patients are usually quite symptomatic below 90%. When an attack is passed and the patient relaxed, the levels return to normal with work of breathing decreased to normal. ...Read more

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Feeling like I don't have enough air, oxygen to breathe, no shortness of breath. Can this be a symptom for asthma?

Feeling like I don't have enough air, oxygen to breathe, no shortness of breath. Can this be a symptom for asthma?

.: Could be symptom of asthma and also may other lung or blood problems. You need to have a physical exam by your physician. ...Read more

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How would oxygen therapy help a patient who is having an asthma attack? What effect will it have on the patient?

How would oxygen therapy help a patient who is having an asthma attack? What effect will it have on the patient?

Prevention: The respiratory system has an important roll in both providing oxygen to tissues & helping acutely regulate the delicate acid base balance in the body. Bronchospasm reduces the easy transfer of oxygen in & co2 out of the body. Without adequate o2, the body reverts to a metabolism that creates more acid causing deterioration, supplemental o2 helps avoid the acid buildup & nourishes tissues. ...Read more

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CT scan shows " mild Air Trapping" secondary to Asthma. At PT, my oxygen flow was 80% after 3 min walk. SOB upon any exertion. How do I fix this?

CT scan shows " mild Air Trapping" secondary to Asthma. At PT, my oxygen flow was 80% after 3 min walk. SOB upon any exertion. How do I fix this?

See allergist: Your oxygen level is too low even for simple asthma and thus you may need to get more studies to rule out lung scarring etc. Consult an allergist in the meanwhile to make sure that you are on the right track. Right now, I see no asthma control drug on your file. Don't delay. ...Read more

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I have COPD and Asthma, I had a ECG done 2 weeks ago and had the results, my left and right atrial are enlarged, I am not on oxygen. Any advice please!

I have COPD and Asthma, I had a ECG done 2 weeks ago and had the results, my left and right atrial are enlarged, I am not on oxygen. Any advice please!

Unusual: It is very unusual, just on the basis of COPD and asthma alone to have both atria to be enlarged unless there is something else like an arrhythmia like Atrial Fibrillation which is not uncommonly associated with chronic lung disease. Other causes like coexisting mitral valve disease would have been identified by the echo ...Read more

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I want to be adding oxygen to cpap for sleep apnea induced asthma attack at night as I have to us my asthma rescue med and have bad sideeffects from?

Review with doc 1st: Although this would seem to be an obvious help, please review your plans with someone who knows your case. Part of what keeps you breathing is the concentration of co2 in your blood and supplemental oxygen under the wrong circumstances could cause problems with your natural breathing drive system. ...Read more

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Is medical marajuina good for asthma my sister have arterial pulmonary hypertension & suffers from asthma. She is on oxygen much of the time. Could marajuina help her?

Is medical marajuina good for asthma my sister have arterial pulmonary hypertension & suffers from asthma. She is on oxygen much of the time. Could marajuina help her?

Marijuana: I am not aware of any randomized, prospective study that demonstrates the benefit of marijuana for pulmonary hypertension. Indeed, I suspect it may worsen the situation for anyone on oxygen. ...Read more

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I had an acute asthma attack, administered oxygen, morphine, and 3 other meds, enlarged heart. Should I take oxygen?

I had an acute asthma attack, administered oxygen, morphine, and 3 other meds, enlarged heart. Should I take oxygen?

No: O2 should be prescribed by a pulmonary physician after finding that your o2 levels are low. Low o2 mean severe pulmonary or heart disease. Reason should be investigated. You need to stop smoking asap. It is not helping and is worsening your condition. I suspect you may have a combination of chronic lung disease/ reactive airway/ heart condition. Consult an internist/lung specialist soon. ...Read more

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I have asthma. Been on prednisone, albuterol, an antibiotic for a week. Still feel im having a hard time getting air. Dr says oxygen sat is good 97%?

Oxygen saturation...: ...Is not a good indicator of breathing difficulty - it only goes down near complete collapse. Peak flow meters give a much better idea, spirometry better yet. ...Read more

Dr. Scott Bolhack
3,115 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