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Doctor insights on: Can Your Blood Oxygen Level From Your Finger Differ From Your Lower Extremities

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Can your blood oxygen level from your finger differ from your lower extremities?

Can your blood oxygen level from your finger differ from your lower extremities?

Yes: Absolutely. Depending on the degree of vascular disease in your arms and legs, this can definitely vary. However it is less common to have vascular disease in your arms than in your feet. This is why oxygen levels in the fingers are most often more accurate than in the toes in people with vascular disease. ...Read more

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Dr. Scott Bolhack
3,104 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


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Have unrepaired ASD; tingling&numbness in fingers when pulse is below 90, in feet below 80, now moving to face. Is this due to poor blood flow/O2?

Have unrepaired ASD; tingling&numbness in fingers when pulse is below 90, in feet below 80, now moving to face. Is this due to poor blood flow/O2?

Asd: These would be unusual symptoms for ASD or for heart rates under 80. This type of generalized parasthesiae can be due to deficiencies in vitamin B12,magnesium,calcium,potassium or types of neuropathy. Discuss this with your physician who will order the appropriate tests and/or refer you to a neurologist. ...Read more

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My blood oxygen level is too low. What could happen if it got lower?

My blood oxygen level is too low. What could happen if it got lower?

Low oxygen: Our body tissues needs constant supply of oxygen to perform optimally. If it gets too low then the tissues especially kidney, heart and brain would have ischemia and lot of problems. See pulmonary specialist. ...Read more

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I'm considering climbing everest without oxygen, and training by sleeping and running in an altitude tent which will lower my blood 02 sat. Levels to ~70%. Can I do both without brain damage?

I'm considering climbing everest without oxygen, and training by sleeping and running in an altitude tent which will lower my blood 02 sat. Levels to ~70%. Can I do both without brain damage?

No guarantees.: People have different susceptibilities to hypoxia depending on many factors including age, physical fitness, and health status. Also, the ability of the brain to withstand hypoxia is time dependent, so time at the summit will be critical. ...Read more

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What does it mean if your blood oxygen level suddenly drops to 60%?

What does it mean if your blood oxygen level suddenly drops to 60%?

Means Hypoxemia: It means there is low oxygen level in your arterial blood and you need to follow up with your doctor or pulmonologist to find the cause and get it corrected.It is an emergency situation and if you can not get the doctors go to er asap. ...Read more

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Please tell me what can cause low oxygen level in the blood ?

Please tell me what can cause low oxygen level in the blood ?

Hypoxia: Anything that decreases o2 diffusibility or increases o2 consumption. These will include copd, pulmonary fibrosis and interstitial lung diseases, asthma exacerbation due to decreased lung volume same as in lung resection, pe, later part of chf, sepsis. ...Read more

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Might i increase my oxygen level in my blood by exercising even when I have anaemia?

Anemia means: Low hemoglobin, low oxygen carrrying capacity. So, higher fio2 or exercise could increase dissolved o2, without increasing adequate delivery to your organs...If not, we would have no need for blood. ...Read more

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Low blood oxygen levels, at what number would be low enough to cause a person to fall to the floor and have a blackout?

Low blood oxygen levels, at what number would be low enough to cause a person to fall to the floor and have a blackout?

Depends: Its the rate of fall thats more important than the actual number. When the partial pressure of oxygen falls below 55 or 88% hemoglobin saturation the delivery of oxygen to our organs begins to decrease. If your organs, like the heart , is already damaged this drop can be very dangerous. If the organs are healthy they can tolerate this drop in oxygen levels for several minutes, sometimes even longe. ...Read more

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What does it mean if you have low oxygen levels in your blood tests?

What does it mean if you have low oxygen levels in your blood tests?

Lung disease: Is the commonest reason for a low level of oxygen in the blood. It can also happen in heart disease if the heart is failing and fluid builds up in otherwise-healthy lungs, or if there is a hole in the heart, causing blood to bypass the right heart circulation into the lungs and skip picking up oxygen there. These are examples of some common causes. Smoking, high altitude=examples of lung reasons. ...Read more

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What is the likelihood of a blood clot in my lungs if my blood oxygen level is 95%-97%?

What is the likelihood of a blood clot in my lungs if my blood oxygen level is 95%-97%?

Risks: Calculating the risks of a blood clot in your lungs is difficult to do when given only the information of oxygen saturation. A saturation between 95-97% is at or very close to normal, hence it would be impossible to speculate on presence of clot or not. In fact, blood clots to the lung can occur and still result in a normal oxygen saturation between 97-100% clinicians use other factors for risk. ...Read more

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Below what level blood oxygen does brain damage happen?

Below what level blood oxygen does brain damage happen?

Hypoxia: That depends on many factors: age of the person when it happened (children tolerate low oxygen better than adults), duration of the low oxygen (longer is worse), how healthy the person is (medical conditions may make the person more sensitive), and the body temperature of the person when it happened (the colder they were, the less oxygen their body and brain needed). There's no simple answer. ...Read more

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How can hyperpnea affects partial pressure of carbon dioxide and oxygen levels in the blood?

Hyperpnea/tachypnea: The rapid breathing will blow out co2 and lower its level in the blood. This may or may not affect the o2 level depending on the cause of the tachypnea. ...Read more

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I had half of a lung removed due to cancer. Now my blood oxygen level is very low. Will exercise help it?

I had half of a lung removed due to cancer. Now my blood oxygen level is very low. Will exercise help it?

Confusing: Removing half of one of your lungs should not have severe effects on your blood oxygen level is there are not other problems. See your doctor and ask for a more complete explanation of your functional status and whether or not there are other diseases affecting your blood oxygen level. ...Read more

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My blood pressure is 111 over 59 and my pulse is 92. I have laboured breathing and my oxygen level last week was 85 - should I be concerned?

My blood pressure is 111 over 59 and my pulse is 92. I have laboured breathing and my oxygen level last week was 85 - should I be concerned?

Yes: The blood pressure is good. The pulse is rather fast. The oxygen level if acurrate is quite low. You probably have some condition already that you are aware of since most people have no idea what their oxygen level is. Please get rechcecked by your doctor. ...Read more

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Can you have idiopathic pulmonary hypertension with normal blood oxygen levels? Does the level of oxygen in your blood correlate to the degree of PH?

Can you have idiopathic pulmonary hypertension with normal blood oxygen levels? Does the level of oxygen in your blood correlate to the degree of PH?

Yes, no: The problem in primary pulmonary hypertension is getting blood through the lungs, not oxygenating it. This causes all kinds of misunderstanding. Since pO2 is easy to measure and pulmonary vascular resistance / blood pressure isn't, it's easy to forget how sick these folks are. ...Read more

Extremity (Definition)

Is appendage or body part that extends from the main body, such as arms or ...Read more