Negative-pressure ventilation: is there still a role?

Is there still a negative side to noninvasive ventilation?

Negative pressure ventilation, the intermittent application of subatmospheric pressure around the chest and abdomen to assist breathing, is founded on sound physiological principles. As long as atmospheric pressure is maintained at the mouth and nose (and the upper airway remains patent), the negative peri-thoracic and-abdominal pressure increases the transpul-monary gradient, expanding the che...

The role of negative pressure ventilation.

In the 3rd century BC Erasistratus of Chios recognised that breathing depended on muscular action. By 1555 Vesalius had described assisted positive pressure ventilation and in 1667 Hooke used a pair of bellows to keep a dog alive in his demonstration to the Royal Society. By the mid-1800s it was recognised that air would be drawn into the lungs through the mouth and nose if a subatmospheric pre...

The role of negative pressure ventilation

In the 3rd century BC Erasistratus of Chios recognised that breathing depended on muscular action. By 1555 Vesalius had described assisted positive pressure ventilation and in 1667 Hooke used a pair of bellows to keep a dog alive in his demonstration to the Royal Society. By the mid-1800s it was recognised that air would be drawn into the lungs through the mouth and nose if a subatmospheric pre...

Is there still a role for thiopurines in Crohn's disease?

Is there still a role for ultrasound in trauma?

Background The UK College of Emergency Medicine recommends that level 1 ultrasound competency is a basic standard for EM doctors and is now mandatory for career progression. Focused Assessment with Sonography in Trauma to include the detection of pleural fluid and pneumothorax (the Extended-FAST scan) forms part of this competency. We compare the diagnostic accuracy of E-FAST with the “gold sta...