Velocity and BUA provide quantitative information on ultra­sound interaction with the medium; it is currently accepted that QUS parameters are not only influenced by bone density, but also by bone structure. Theory suggests that BUA is deter­mined by bone density and bone microarchitecture, while SOS is influenced by the elasticity of bone as well as [...]

Introduction The measurement of bone density has became an established method to determine the skeletal status for diagnosis and treat­ment of osteoporosis. Diagnosis of osteoporosis today is based mainly on this measurement since bone density at vari­ous anatomic sites has been found to be strongly associated with future fractures. However, both epidemiological and interventional investigations [...]

The triad of yellow nails, lymphedema and pleural effusion was first described by Emerson in 1966 and was labelled the yellow nail syndrome. Since then, more than 100 patients with the classic triad or variants thereof have been described. Pleural effusions in this syndrome range from small, unilateral and asymptomatic to large, bilateral and debilitating. [...]

We were quite interested in the six cases of spontaneous pneumothoraces reported by Martinez et al. We have not experi­enced any episodes of spontaneous pneumothorax in our AIDS patients in either of our two secondary prophylaxis aerosolized pentamidine studies. From June 1, 1988 to December 31, 1988, there have been 55 patients involved in our double-blind [...]

The data presented herein support the idea that routine use of low Vt is safe in SICU patients. Furthermore, our results suggest that the incidence of pulmonary infections may be decreased by using low Vt, although this somewhat surprising observation needs to be confirmed in a larger study designed to specifically address this issue. Questioning [...]

One hundred three patients were entered into the trial from October 1987 through February 1988. As shown in Table 1 and Figure 1, the groups were quite comparable in terms of age, sex, and severity of illness (as estimated by APACHE-II score). Age was bimo- dally distributed in both groups, the younger peak representing primarily [...]

This study was approved by the Committee on the Protection of Human Subjects in Research at the University of Massachusetts Medical Center, Worcester. Verbal informed consent was obtained from patients or responsible third parties within 24 h of entry into the trial. All patients requiring mechanical ventilation in the surgical intensive care unit (SICU), except [...]