We need oxygen to live. The minimum oxygen concentration in the air required for human breathing is 19.5 percent ( in inspired air ). The human body takes the oxygen breathed in from the lungs and transports it to the other parts of the body via the body's red blood cells (Haemoglobin). Each cell uses and requires oxygen to thrive.
Serious side effects can occur if the oxygen levels drop outside the safe zone. When oxygen concentrations drop from 19.5 to 16 percent ( inspired air) , and you engage in physical activity, your cells fail to receive the oxygen needed to function correctly. Mental functions become impaired and respiration intermittent at oxygen concentrations that drop from 10 to 14 percent; at these levels with any amount of physical activity, the body becomes exhausted. Humans won't survive with levels at 6 percent or lower
A normal level of oxygen is usually at least 95% (spo2)
or higher. Some people with chronic lung disease or sleep apnea can have normal levels of around 90%. The SpO2 reading on a pulse oximeter shows the percentage of oxygen in someone’s blood.
A person’s oxygen levels may be low if they feel short of breath, are breathing faster than usual, or feel too sick to do their usual daily activities, even if a pulse oximeter says their oxygen levels are normal.
People should call a doctor or another health care provider right away if they have these symptoms.
An initial SpO2 reading should serve as a person’s baseline. A medical professional should be consulted
for SpO2 readings below the baseline, or per facility protocol if the person is a long-term care facility
resident or has been previously evaluated by a physician for COVID-19-related concerns. Supplemental oxygen or other treatments may be needed. In general, people should contact a health care provider if they have shortness of breath or their SpO2 number is less than 95%.
Despite experiencing dangerously low levels of oxygen, many people infected with severe cases of COVID-19 sometimes show no symptoms of shortness of breath or difficulty breathing. Hypoxia's ability to quietly inflict damage is why it's been coined "silent." In coronavirus patients, it's thought that the infection first damages the lungs, rendering parts of them incapable of functioning properly. Those tissues lose oxygen and stop working, no longer infusing the blood stream with oxygen, causing silent hypoxia. But exactly how that domino effect occurs has not been clear until now.
Next, they looked at how blood clotting may impact blood flow in different regions of the lung. When the lining of blood vessels get inflamed from COVID-19 infection, tiny blood clots too small to be seen on medical scans can form inside the lungs. They found, using computer modeling of the lungs, that this could incite silent hypoxia, but alone it is likely not enough to cause oxygen levels to drop as low as the levels seen in patient data.
Last, the researchers used their computer model to find out if COVID-19 interferes with the normal ratio of air-to-blood flow that the lungs need to function normally. This type of mismatched air-to-blood flow ratio is something that happens in many respiratory illnesses, such as with asthma patients, Suki says, and it can be a possible contributor to the severe, silent hypoxia that has been observed in COVID-19 patients. Their models suggest that for this to be a cause of silent hypoxia, the mismatch must be happening in parts of the lung that don't appear injured or abnormal on lung scans.
Some of the important medicines which are helpful toraise theoxygen levels in blood are
Its action is that of an oxygen carrier and a catalyzer, hence
its use in wasting diseases. Increases amount of haemoglobin,
also combines its oxygen with toxines and destroys their virulence.
Also increases and stimulates phagocytes.
A remedy in degenerative conditions of the liver and arteries.
Anorexia and symptoms of gastro intestinal irritation; albumen,
casts and blood in urine. Tremors; vertigo; hysteria
and melancholia; neuro-retinitis and blindness. Anaemia,
emaciation. Cough dry, irritating and paroxysmal, sometimes
with haemorrhages. Irritation of nose, eyes and throat. Tuberculosis,
chronic rheumatism, diabetes. Acts as a tonic to digestive function
and in early tuberculosis. Arterio-sclerosis, sensation
as if heart was compressed, as if blood had no room in the aorta.
Anxious pressure on whole chest. Fatty heart. Degenerative
states, has brain softening. Atheroma of arteries of
brain and liver. Compare: Ars.; Phos. Ammon. vanad.
(fatty degeneration of liver.)
Dose.-6-12 potency. The best form is Vanadiate of Soda,
2 mg.daily, by mouth.
The digitalis of the lungs. (Hale.) Removes temporary
obstruction to the oxidation of the blood by stimulating respiratory
centres, increasing oxidation and excretion of carbonic
acid. Pulmonary stenosis. Thrombosis of pulmonary artery.
Uraemic dyspnoea. An effective remedy in many cases of
asthma. It stimulates the respiratory centers and increases the
oxygen in the blood. "Want of breath" during exertion is the
guiding symptom. Cardiac asthma.
Relationship.-Compare : Coca; Arsenic; Coffea - Catalpa
Dose.-First trituration of tincture, or Aspidospermin hydrochlorid
1 grain of 1x trit. Every hour for a few doses.