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Olivia Colebrooke

on 14 November 2013

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Artificial ventilation may be used when someone is unable to breathe
There are many possible risks with this process, including collapsed lungs, airway injury, damage to the alveoli and pneumonia
Care must be taken seroiusly to do this properly
Machines that can be used to enable air to move in and out of the lungs
Iron Lungs
Are used in cases of paralysis, often due to polio
The thorax of the patient is contained in the metal box and creates a very low pressure outside the lungs to help the patient breathe
The thorax is then able to expand so that air can enter the lungs
They were developed and used from the 1920s to treat people with Polio
Are attached by a tube and mask to the nose and mouth
Used during surgery or when a patient is unconscious
The air enters the lungs under a high pressure
Have been used extensively since 1950s
Effective at treating many polio patients
Patients is confined to the machine and in some cases have lived init for 60 years
The vacuum in the 'iron lung' can affect the abdomen. This leads to the pooling of blood in the lower parts of the body
Artificial Ventilators
Used in first aid to help people breathe
A mask is placed over the nose and mouth attached to a bag
The bag is squeezed, pushing air into the lungs
Manual Ventilators
Mechanical Ventilators
Positive and Negative Pressure Ventilators
Negative Pressure
Positive Pressure
How does it work
Useful during operations, where surgeons need access to the internal organs
Effective at ventilating the lungs
Long term ventilation requires the tube to be inserted surgellically inserted into the trachea through the neck
This can be danegorous when the patient is unstable
A tube is entered into the trachea through an incision in the neck
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