Is oxygen saturation related to lung capacity?

Oxygen saturation remained within the normal range in all persons, in spite of reduced values of the measured lung parameters. No statistically significant dependency between lung vital capacity and oxygen saturation, and between chest expansion and oxygen saturation was found.

Does good oxygen saturation mean healthy lungs?

A normal level of oxygen is usually 95\% or higher. Some people with chronic lung disease or sleep apnea can have normal levels around 90\%. The “SpO2” reading on a pulse oximeter shows the percentage of oxygen in someone’s blood. If your home SpO2 reading is lower than 95\%, call your health care provider.

Can you have lung problems with normal oxygen levels?

A person may have dyspnea even though the actual levels of oxygen are within a normal range. It is important to understand that people do not suffocate or die from dyspnea. But tell your health care team right away if you have any of these symptoms or if they get worse.

Does a normal SpO2 rule out respiratory failure?

Finally, it is important to emphasize that even in the most optimal patient-pulse oximeter interface and settings, a completely normal SpO2 does not rule out gas exchange problems in the lungs or the adequacy of ventilation since the alveolar-arterial oxygen difference and PaCO2 are not measured by pulse oximetry.

Can oximeter detect lung damage?

People with a lung condition may have a blood oxygen level lower than normal, so pulse oximetry can help to diagnose if there is a problem. The more the lungs are damaged, the more likely there is to be a problem with oxygen uptake. Pulse oximetry can also be used to measure to how badly a person’s lungs are affected.

Does shortness of breath affect spo2?

Shortness of breath does not equal saturation (SaO2\%) In other words, your level of dyspnea, or air hunger, does not always correlate with your oxygen saturation. This means that you can be short of breath, even extremely short of breath, even in the presence of normal oxygen saturation.