Pulse Oximetry

Introduction Pulse Oximetry is a way of measuring the oxygen level in the blood. It is a measure of oxygenation but not a measure of ventilation Oxygenation – the ability f the body (particularly...

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Pupillary Defects

For a really good demonstration of how this works, see Eye simulator V2.0 Physiology There are two nerves involved in pupillary responses: Optic Nerve (II) – this is the afferent nerve – it detects...

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