purpose : to evaluate efficacy, complications, and patient satisfaction using local anesthesia (la), in comparison to with general anesthesia (ga) in external dacryocystorhinostomy (dcr) methods : in this prospective study, 149 patients with complete nasolacrimal duct (nld) obstruction who were candidates for external dcr were randomized in 2 groups: ga 73 patients, and la 76 patients. intraope...

abdominal wall hernia is common but reliable scientific data about its work relatedness is very limited and inconsistent. in this paper, a less common type of abdominal wall hernia in a 30 year old male worker is presented with recurrence after first surgery when he returned to work. in contrast with almost all kinds of hernia, a lifelong limitation for heavy lifting was recommended. it seems t...

Fluctuation theorems (FTs) establish fundamental identities about energy exchanges between a nonequilibrium system and its environment. Interest in such relations has been boosted by the possibility of applying perturbations to mesoscopic systems undergoing irreversible processes. While most recent research focused on classical systems, in a paper in Physical Review Letters, Michele Campisi, Pe...

Neither stroke volume nor external cardiac work (the integral of pressure times flow during ejection) has been considered an important correlate of myocardial oxygen consumption. An initial set of experiments re-examined this question of independently varying heart rate, systolic blood pressure, and stroke volume in seven closed-chest, anesthetized dogs. This was achieved by cardiac pacing, a p...

Informal workplace communication is a central component of work and fundamental to understand its fragmentation. Previous studies point to external interruptions and multi-tasking preferences as the source of work fragmentation. Yet, although some empirical evidence exists on the role played by social informal interactions on interrupting work, we lack a more precise understanding of the degree...

OBJECTIVE Many state trauma registries contain work-related information but are underutilized for occupational injury research/surveillance. We assessed three methods of identifying work-related injuries in the Washington State Trauma Registry (WTR). METHODS State-designated trauma facilities report traumatic injuries meeting specific inclusion criteria to the WTR. The WTR reports from 1998 t...

Dyssynchronous activation of the heart leads to abnormal regional systolic stretch. In vivo studies have suggested that the timing of systolic stretch can affect regional tension and external work development. In the present study, we measured the direct effects of systolic stretch timing on the magnitude of tension and external work development in isolated murine right ventricular papillary mu...

Background. Left ventricular mechanical efficiency is one of the most important measures of left ventricular pump performance. Several clinical studies, however, have shown that mechanical efficiency does not fall substantially as the heart fails. To clarify the insensitivity of mechanical efficiency to the change in pump performance, we analyzed human left ventricular mechanical efficiency, ap...

BACKGROUND Left ventricular mechanical efficiency is one of the most important measures of left ventricular pump performance. Several clinical studies, however, have shown that mechanical efficiency does not fall substantially as the heart fails. To clarify the insensitivity of mechanical efficiency to the change in pump performance, we analyzed human left ventricular mechanical efficiency, app...