Understanding the Ventilation-Perfusion Relationship

Understanding the Ventilation-Perfusion Relationship

To ensure that enough oxygen is provided by ventilation to saturate the blood fully requires that ventilation and perfusion of the lungs are adequately matched. Ventilation (V) refers to the flow of air into and out of the alveoli, while perfusion (Q) refers to the...
The Beginners Guide to Non-Invasive Ventilation

The Beginners Guide to Non-Invasive Ventilation

Non-invasive ventilation (NIV) is the administration of ventilatory support without the use of an invasive airway measure (e.g. endotracheal intubation or tracheostomy tube). It can be applied using a variety of devices including facemasks, nasal masks, various...