Pulse Oximeter Readings Chart By Age: All You Need to Know About It!

Levels of oxygen saturation (SpO2) that are considered normal for both adults and toddlers fall somewhere between 95 and 100 percent. On the other hand, older adults typically have slightly lower amounts of oxygen saturation compared to younger adults and children. While infants and children generally have SpO2 rates of 97% or higher, people over the age of 70 may have oxygen levels that are closer to 95%, which may be considered normal for that age group.  

Pulse Oximeter Readings Chart By Age


Measurements of arterial oxygen saturation can be obtained in a reliable and non-invasive manner by using modern pulse oximeters. These types of devices are easy to operate, are capable of measuring normal oxygen saturations accurately in the vast majority of patients, and consistently identify desaturations in a wide variety of settings. 

Pulse oximetry has been shown to be useful in the treatment of specific patient subgroups in a number of studies, and recent improvements in technology have made routine screening at a lower cost feasible. Whatsoever, allow us to dive into further details of the Pulse Oximeter Readings Chart By Age below! 

What Does the Pulse Oximeter Readings Chart By Age Indicate? 

97–100% oxygen saturation is considered typical. Adults who are older have lower oxygen saturation levels than adults who are younger. For instance, a person over the age of 70 might have an appropriate oxygen saturation level of about 95%. It is significant to remember that, depending on a person’s health, the oxygen saturation level changes greatly.  

Thus, to evaluate oxygen saturation levels and changes in these levels, it is crucial to comprehend both baseline readings and the underlying physiology linked with particular conditions. Obese people typically have reduced oxygen saturation levels, as do those with conditions like emphysema, chronic obstructive pulmonary disease, congenital heart disease, and sleep apnea

Depending on whether hypercapnia is present, smoking can affect the accuracy of pulse oximetry, causing the SpO2 to be either erroneously low or falsely high. The Pulse Oximeter Readings Chart By Age has trouble distinguishing between carbon monoxide and oxygen in the blood when a patient has hypercapnia. 

In What Condition Does the Pulse Oximeter Readings Chart By Age Fluctuate? 

When a person is speaking, there is a possibility that their oxygen saturation levels will decrease significantly. People who have anaemia may have oxygen saturation levels that are within the normal range (for example, 97% or greater). However, this does not necessarily indicate that sufficient oxygenation is present because individuals with anaemia have a lower total amount of haemoglobin available to carry an adequate supply of oxygen.  

What does the Pulse Oximeter Readings Chart indicate? People who have anaemia may notice the lack of oxygen supply more clearly during physical exercise because of their condition. Hypothermia, decreased peripheral perfusion, and cold extremities are all conditions that have been linked to erroneously low oxygen saturation values.  

Pulse Oximeter Readings Chart By Age


In situations like these, a device that measures oxygen saturation using the earlobe or arterial blood gasses would provide a measurement of saturation that is more accurate. On the other hand, arterial blood gas measurements are almost never performed outside of intensive care or emergency rooms. 

All About the Significance of Pulse Oximeter Readings Chart 

The red blood cells in your body are comparable to automobiles. Each one is capable of transporting up to four oxygen molecules throughout your body, bringing oxygen to vital organs such as your heart and brain. The percentage of oxygen that is normally present in the blood is referred to as oxygen saturation. At all times, the vital processes in your body require a normal level of oxygen saturation. 

However, there are instances when your blood can get either too much or too little oxygen and when this happens, there is a possibility that there will be negative effects on your health. The proportion of oxygen that is saturated in your blood is used as a measurement tool for determining oxygen levels. This number is referred to as your SpO2 level in accordance with the Pulse Oximeter Readings Chart.  

It is common practice in the field of medicine to consider a blood oxygen saturation rate of between 95% and 100% to be typical. On the other hand, if your percentage is smaller, you might not experience any symptoms at all. Oxygen concentrations between 91% and 95% may point to a potential health issue. Those who find themselves in this predicament should get in touch with their primary care physician. 

Frequently Asked Questions  

What are the Common Signs of Depressed Oxygen Saturation Levels? 

As the percentage of oxygen in your bloodstream drops, you may start to experience some of the following symptoms: 

  • Uneasy and shallow breaths. 
  • Short, shallow breaths. 
  • When one is too ill to participate in everyday activities due to illness. 

What Are the Causes of Low Oxygen Saturation Levels? 

When your body has trouble delivering enough oxygen to your blood, it is possible that any one of the following situations is contributing: 

  • Conditions of the heart and abnormalities of the heart. 
  • Conditions of the lungs such as asthma, emphysema, COPD, and others. 
  • Extremely high elevations. 
  • Strong pain medications have the potential to slow down your respiration. 
  • Sleep paralysis. 


What does the Pulse Oximeter Readings Chart indicate? In instances of low blood oxygen, patients frequently present with few or no symptoms. This is even more likely to be the situation in more severe cases of hypoxemia. 

The best method to guard yourself against having low blood oxygen is to stay away from the things that can cause it. Regular exercise and a healthy diet will help you maintain good health throughout your body, including in your airways and heart.  

By following the recommendations of the health authorities, you can prevent infections like COVID-19, which have the potential to cause hypoxemia. Masks provide protection against a variety of respiratory conditions, many of which can reduce the amount of oxygen in the blood. 


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