Showing posts with label Hypoxia. Show all posts
Showing posts with label Hypoxia. Show all posts

Tuesday, May 10, 2016

Hypoxia

Hypoxia






Hypoxia is different from Hypoxemia which is the condition of insufficient amounts of oxygen in blood. Hypoxia is the condition in which there is deficiency of oxygen that reaches the tissues. In short, Hypoxia is “low amount of oxygen” or “insufficient oxygen” which may be caused due to many factors. Hypoxia can be in generalized form (affecting the entire body) or in specific form (affecting only the tissues or specific organ of the body). Similarly it can be acute or sudden and can be chronic developing as a slow process.


Several types of hypoxia are recognized like hypoxic hypoxia, anemic hypoxia, circulatory hypoxia, histiotoxic hypoxia and metabolic hypoxia.










Symptoms :


The symptoms may differ depending on the intensity of lack of oxygen and on the duration of illness. Some of the common signs of hypoxia are dizziness, breathlessness, confusion, Headache, rapid heartbeat, euphoria, tingling sensation on hands and limbs, partial vision, tunnel vision, lack of coordination, heightened Blood Pressure and Cyanosis (blue coloration of lips and hands due to lack of oxygen). Not all the symptoms are present on the same person and affected individuals may have one or two symptoms.


Hypoxia can affect the functions of vital organs like heart, kidney and brain. In case of severe form of acute hypoxia, life threatening conditions like coma or death may occur.


Causes :


Lung disease is one of the major causes of hypoxia. Lung problems like Pneumonia, COPD, rheumatoid lung disease can cause hypoxia. It can also be caused due to increased altitude. People who travel to high altitudes can be easily affected due to low oxygen levels which in turn may cause nausea, fatigue and shortness of breath. Hence it is necessary to take rest and have lots of water to supplement the oxygen.


Sometimes the person may not be able to breathe enough of oxygen due to hypoventilation. In this condition, the brain may fail to send signals to lungs for taking in more oxygen. Such circumstances happen when the person is under the influence of anesthesia or Stroke or choking.


Anemic hypoxia is caused by hemorrhage, general anemia and carbon monoxide poisoning. Hypoxia can occur due to Edema (swelling due to accumulation of liquid) and any obstruction in the flow of blood to the heart. Severe case of poisoning like cyanide can cause hisiotoxic hypoxia. The cells of all the tissues are loaded with poisonous or toxic materials and impair their function severely.


People with intense Asthma may need additional oxygen for breathing properly. A person exposed to high level of nitrous oxide is subjected to high risk of decreased oxygen supply. People with Sleeping Sickness like sleep apnea may develop hypoxia when oxygen flow is suddenly interrupted causing Heart Attack or stroke.


Reduction of oxygen supply to the brain or loss of supply can cause serious problems like brain damage or Blood Clots on the brain. Sometimes very low level of hemoglobin can also cause hypoxia. Smoking can seriously induce this disease apart from causing several health problems.


Diagnoses :


Your doctor may look for symptoms and may order for blood profile, ECG, chest X-ray, CT scan or MRI scan, depending on the condition.


Treatment :


Treatment lies in finding the underlying cause and removing it. For severe forms of lack of oxygen, artificial oxygen therapy is given. In rare cases, the patient will be put on ventilator or lung machine for pumping enough oxygen to the heart.


During mechanical ventilation, the patient is put under continuous positive airway pressure, thus increasing the supply of oxygen to the nasal passage. This should be given under close monitoring so that the airway pressure remains balanced.


Supplementary oxygen is given through oxygen cylinders or tanks. Nowadays portal devices are available to manage such problems. For some patients, blood transfusion is done with packed RBC cells. In this process, plasma cells are removed from the blood in the laboratory and packed RBC is transfused into the patient for increasing the oxygen supply.


Whatever may be the type of treatment, it has to be given in close medical supervision. The doctor has to find out the exact cause of the problem, before he proceeds with treatment.


Hypoxia can become fatal if it is very severe. In that case, it is necessary to take the person to the clinic immediately to put him on mechanical ventilation. The doctor will monitor the heartbeat and blood pressure continuously until he attains normal state. Plenty of fluids are to be given. In rare cases, the affected person may experience memory loss or amnesia before recovering completely from hypoxia. The brain should not be deprived of oxygen for long time failing which long term consequences can happen.











Hypoxia – Symptoms, Causes, Definition, Treatment, Types

Hypoxia – Symptoms, Causes, Definition, Treatment, Types

What is Hypoxia?


This is a state of the human body where the body tissues are hungry for oxygen. It is oxygen shortage in the body. In the most extreme hypoxia, oxygen is totally missing from the body which is a condition known as anoxia. Four kinds of hypoxia include:










Hypoxemic Hypoxia
In this type, the oxygen pressure of the blood which goes to the body tissues is much too low to push and flood the hemoglobin with oxygen


Anemic Hypoxia
In this type, the total quantity of hemoglobin is much too small and so the ability of the blood to carry oxygen is much too low


Stagnant Hypoxia
In this type, blood is or can be typical but the blood flow to the tissues is reduced or is not distributed evenly


Histotoxic Hypoxia
In this type of hypoxia, the cells of the tissue are poisoned and because of this poisoning, the cells are unable to make use of oxygen properly


Diseases of the heart, circulation, blood as well as the lungs can all cause some type of hypoxia.


Hypoxia Symptoms


Often the signs or symptoms of hypoxia are not readily recognized because hypoxia is subtle in the onset. The symptoms and signs are normally different in each person and often will not occur in the same order as listed below. Because of this, it is important to be conscious of all the symptoms and signs.


Signs include:



  • Breathing which is rapid

  • Cyanosis

  • Coordination becomes poor

  • Lassitude/lethargy

  • Poor judgment


Symptoms include:

  • Hunger for air

  • Dizziness

  • Muscle as well as mental fatigue

  • Headache

  • Nausea

  • Cold or Hot Flashes

  • Visual impairment

  • Tingling

  • Euphoria


Hypoxia Causes


A main cause of hypoxia which must be discussed is often referred to as altitude sickness. Individuals who travel to altitudes higher in the mountains from lower altitudes can be affected by the oxygen levels which are decreased in the air they breathe. This can result in fatigue, nausea, headache as well as shortness of breath. Individuals who suffer from altitude sickness should rest, drink lots of fluid and stop or slow down their ascent to the higher altitudes so that the body can adjust to the oxygen levels step by step.


You're reading Hypoxia – Symptoms, Causes, Definition, Treatment, Types posted by minhhai2d, the information is for reference only.








There are many other situations which can also cause generalized hypoxia. Individuals who use nitrous oxide as well as other forms of inhalants as recreational drugs are at a great risk of decreased oxygen levels in the body. Those individuals with problems affecting breathing for instance Asthma, sleep apnea or Emphysema can be also develop hypoxia. There are also complications which happen from the use of anesthesia which may lead to deprivation of oxygen in the body. Another cause can also be heart failure.


Stagnant hypoxia which is also known as Ischemic hypoxia may affect many different areas of the body as well as cause tissue damage. This is a serious type of hypoxia especially when there is loss of oxygen to the brain – leading to irreversible, severe damage to that organ. Some causes which can affect the brain include strangling, suffocation or choking. Arteries which are blocked and lead to the head can also be blamed. Blood Clots as well as cerebral trauma also can cut off the supply of blood to regions of the brain.


In cases of Histotoxic hypoxia, there are cells which are damaged, and therefore are unable to use and absorb oxygen. This can happen often because of overuse of alcohol or drugs. The intake of certain poisons like hydrogen sulfide as well as cyanide can also be a cause of this type of hypoxia.


Some individuals can experience oxygen levels which are decreased because of deformities or hemoglobin deficiency. This condition is also known as carbon monoxide poisoning as well as hypemic hypoxia.


Smoking is also a common cause of hypoxia as it is a common cause of many problems with the body. No matter what illness you read about, you will almost always find smoking as a contributing cause. The most important thing that any individual can do to improve their overall health is to stop smoking.


Hypoxia Treatment


Hypoxia can often be a condition which is fatal. There are a variety of ways to treat hypoxia depending on how severe the hypoxia is. If an individual is suffering from hypoxia, the most important step is to establish an airway by assisted breathing. This individual needs immediately to be taken to the hospital where he can be put on a ventilator to assist with breathing. The heart rate and Blood Pressure needs to be monitored. They need to be kept in control with the aid of medications as well as plenty of fluids. If there are seizures they need to be suppressed. Fluids as well as medications which are needed can be delivered by intravenous fluids or IV. Often cold blankets can be used to slow down the activity of the cells of the brain as well as decreasing the oxygen need. These should be the immediate first steps in treating hypoxia even before the underlying reason for hypoxia is treated.


Along the pathway to recovery, the individual can experience personality regression, memory loss, hallucinations, and amnesia, twitches as well as muscle spasms.


Recovery is always possible especially when the brain has not been starved for oxygen for a very long period. For this reason, it is important to give air which is adequate and medical aid to the individual who is suffering from hypoxia.






Hypoxia Pictures