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Who Can Benefit From Oxygen Therapy? Human could not live without oxygen. Even if people are deprived of oxygen for only a short time, it will still lead to death. Oxygen plays an important part in the immune system by helping kill bacteria and fuel the cells that make up the body's defenses against viruses and other invaders. Furthermore, oxygen is particularly needed by human eye to function well. The nature air that humans normally breathe is about 21 percent oxygen (the rest is mainly nitrogen). The lungs absorb about a quarter of that oxygen and transmit it to the blood, which in turn carries it to all the cells of the body, where it is used in chemical reactions to provide the energy that keeps humans alive. Some people with breathing disorders cannot get enough oxygen naturally. They may need supplemental oxygen, or oxygen therapy to have improved energy levels and sleep, and better quality of life. Disorders that prevent people from getting enough oxygen on their own include chronic obstructive pulmonary disease (COPD); pneumonia; asthma; lung disease; and trauma to the respiratory system; sleep apnea; and heart failure. Oxygen therapy can also be useful for older people without COPD who develop dementia and other debilitating conditions, and for treating the frailties of aging. Evidence did indicate that supplemental oxygen may improve sleep in people with sleep apnea (a condition that causes a person to periodically stop breathing during sleep). But there does not appear to benefit sleep in people without this condition.
Many people with severe COPD require long-term,
regular oxygen therapy that can significantly improve their quality and length
of life. Many of them may need oxygen therapy for at least 15 hours every day. A
study conducted in 1990 reported that the majority of 30 participants with COPD
who used oxygen therapy over several months were found to have an improvement in
well-being, alertness, and sleep patterns. In the study, the participants had to
use oxygen therapy continuously for several hours a day over an expanded period
of time. In July 2010, a paper published in 'Chest Journal' by American College
of Chest Physicians also found that continuous supplemental oxygen is most
beneficial to people with COPD and can increase survival rates.
For patients with heart failure, their heart muscle might be weaker and may not be able to pump blood the way it normally would. This will refrain the body from getting the amount of oxygen it needs. The doctor might prescribe oxygen therapy to reduce the heart’s workload since oxygen therapy can raise the amount of oxygen delivered to the body's tissues. It is certainly not a cure for heart failure, but it may prevent serious issues caused by low oxygen, such as damage to the heart and brain. It may also relieve some symptoms such as shortness of breath and swelling in the ankles. However, oxygen therapy cannot prevent the development of heart failure or reduce the long-term risk of dying for patients with suspected heart attack, according a study by researchers at Karolinska Institutet that was published August 26, 2018 in Journal ‘Circulation’. The study was conducted at 35 Swedish hospitals, involving random treatment with or without oxygen of 6,629 patients with suspected heart attack. The findings indicate that oxygen therapy in a moderate dose is not harmful but does not raise the survival rates or reduce complications like the development of heart failure or new heart attacks. Even for people with medical conditions that will benefit from supplemental oxygen, getting too much can be harmful and even deadly. A study published April 28, 2018 in ‘The Lancet’ provided evidence that oxygen therapy may increase the risk of death when given liberally to people with acute illness and trauma. The researchers also concluded that supplemental oxygen might become unfavorable above an SpO2 range of 94 to 96 percent. SpO2 stands for peripheral capillary oxygen saturation, an estimate of the amount of oxygen in the blood. Normal SpO2 values vary between 90 and 100 percent.
Remember this, oxygen therapy should be prescribed
by medical doctors according to patients’ conditions. As long as the patients
follows the doctor’s directions, oxygen therapy is generally considered safe. Date: April 02, 2020
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