BACKGROUND Reclining wheelchair users often add one or more sitting assistive devices to their wheelchairs, but the effect of these additional sitting assistive devices on the risk of pressure ulcers has rarely been investigated. This study examined the four modes of reclining wheelchair without and with different sitting assistive devices, namely the back reclined mode, the lumbar support with...

many diseases are related to cerebrospinal .uid (csf) hydrodynamics. therefore, understanding the hydrodynamics of csf .ow and intracranial pressure is helpful for obtaining deeper knowledge of pathological processes and providing better treatments. furthermore, engineering a reliable computational method is promising approach for fabricating in vitro models which is essential for inventing gen...

OBJECTIVE To compare the static postural balance between women suffering from chronic low back pain and healthy subjects, by moving the center of pressure. METHODS The study included 15 women with low back pain (LBP group) and 15 healthy women (healthy group). They were instructed to remain in standing on the force platform for 30 seconds. We analyzed the area and the speed of displacement of...

This project proposes a new optimal routing/scheduling back-pressure algorithm that not only guarantees network stability (throughput optimality), but also adaptively selects a set of optimal routes based on shortest-path information in order to minimize average path lengths between each source and destination pair. Our results indicate that under the traditional back-pressure algorithm, the en...

STUDY DESIGN The seat and back contact force, pressure distribution, lumbar lordosis, and low back muscle activities associated with a new seat design with adjustable ischial support and backrest were investigated using kinematic, kinetic, electromyographic, and radiographic measurements. OBJECTIVES To investigate the biomechanical effects of adjusting ischial and backrest supports during sit...

BACKGROUND Reduction of atheroembolic complications during cardiopulmonary bypass remains a major challenge in cardiac surgery. New cannula tip designs may help to attenuate this problem by improved hydrodynamics. METHODS Pressure gradients and back pressures of a new aortic cannula tip design were measured and compared with the Medos X-Flow, Sarns Soft-Flow and Argyle THI cannulae at various...

Maximizing network throughput via back-pressure routing is the subject of a considerable body of literature. It is well known that back-pressure routing induces long delays and this has motivated a number of proposals for improving the delay performance. However, to our knowledge, no useful results are available in the literature that characterize the delays induced by packet re-ordering which ...

Background and Objectives: Suction is a necessary and common method which aids in the release of secretion from the respiratory system for the patients who have undergone mechanical ventilation. One of the most common complications of suction is hypoxemia which causes dysrhythmia and death. The purpose of this study was to determine the effects of open and closed-endotracheal suction on cardiov...