Experiments in pneumatic chemistry paved the way for medical innovation in the last quarter of the eighteenth century. Thomas Beddoes and James Watt were instrumental in the spread of the use of new gas chemistry in pneumatic therapy, but they were far from alone. There was no shortage of experimental subjects, as the practice was quickly taken up by medics throughout Britain.

PURPOSE Intussusception is a common surgical emergency in infants and children. The incidence of intussusception is from one to four per 2,000 infants and children. If there is no peritonitis, perforation sign on abdominal radiographic studies, and nonresponsive shock, nonoperative reduction by pneumatic or hydrostatic enema can be performed. The purpose of this study was to compare the success...

Computational Fluid Dynamics (CFD) simulations of gas-solid flow through a positive low-pressure pneumatic conveyor were performed using Eulerian-Eulerian framework. Pressure drop in pneumatic conveying pipelines, creation and destruction of plugs along the horizontal and vertical pipes, effect of 90° elbows and U-bends on cross-section concentrations, and rope formation and dispersion were...

BACKGROUND Pneumatic tourniquets are medical devices that occlude blood flow to distal part of extremities and are commonly used in upper limb surgeries to provide a dry, clean and bloodless field. To decrease pressure-related injuries and potential risk of complications subjected to the high inflation pressure of pneumatic tourniquet, minimal inflation pressures are recommended. METHODS A ne...

BACKGROUND Pneumatic compression of the lower part of the body increases systemic vascular resistance and left ventricular afterload. AIM We compared the diagnostic accuracy of dobutamine stress echocardiography (DSE) with pneumatic compression of the lower extremities, vs. standard DSE, for detection of angiographically significant coronary artery disease (CAD) in patients with normal baseli...

0957-4158/$ see front matter 2010 Elsevier Ltd. A doi:10.1016/j.mechatronics.2010.05.002 * Corresponding author. Address: IKERLAN, Arizme ate-Mondragon, The Basque Country, Spain. Tel.: +34 9 69 44. E-mail addresses: [email protected] (A. Pujana-A es (A. Mendizabal), [email protected] (J. Aren (R. Prestamero), [email protected] (J. Landaluze). The characteristics of pneumatic artificial m...

Dense phase pneumatic conveying has been investigated through simulation, using a discrete element approach for the granular particles and a finite difference method for the pressure field. Both horizontal and vertical conveying are studied and compared. Studies of single plugs or slugs promise to give insight into the performance of pneumatic conveying systems.

Falsely elevated serum or plasma potassium level can be the result of mechanical injury to blood cells. We describe pseudohyperkalaemia caused by pneumatic tube transport of blood specimens from a patient with leukaemia. Clinicians should be aware of this possibility when interpreting the clinical significance of hyperkalaemia. In leukaemic patients, pneumatic tube transport of blood specimens ...