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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

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Dr. Sue Ferranti
2,992 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: Yes it is possible; since the (smooth muscle) constriction of the bronchi can not be seen in chest x ray. Most people with asthma have normal oxygen levels most of the time (even during attacks, respiratory rate, heart rate will tend to compensate the hypoxia). ...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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Dr. Scott Bolhack
3,102 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