J. Standeven

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BACKGROUND We retrospectively reviewed the performance of the mosaic porcine, bovine pericardial, and homograft prostheses for pulmonary valve replacement to correct chronic pulmonary insufficiency. METHODS From January 1995 to August 2006, 82 patients (mean age, 22.7 years) underwent valve replacement with porcine (49 patients), bovine pericardial (18(More)
A laboratory model has been utilized to evaluate left atrial and pulmoanry hemodynamics while comparing atria of three different compliances, five valve orifices, four pulmonary complicances, two venous pressures, and a predetermined pulmonary vascular resistance. The data demonstrate significant relationships between these variables and cardiac output,(More)
Of 184 patients who have received an inflatable penile prosthesis at our institution since 1974, 43 per cent have undergone reoperation, the majority of which were owing to cylinder leakage. Comparison by life-table analysis of cylinders placed before and after introduction of the rear tip extender does not show an improvement in cylinder survival to date.
OBJECTIVE Occupational use of vibrating hand tools contributes to the development of upper extremity disorders. While several types of vibration damping materials are commercially available, reductions in vibration exposure are usually tested in the laboratory rather than in actual work environments. This study evaluated reductions in hand vibration with(More)
We investigated whether TNB alters colonic tissue levels of PAF at the expense of changes in colonic motility in the isolated perfused rabbit left colon. Colonic inflammation was induced by the intracolonic administration of 0.25 ml of 50% ethanol containing 30 mg of trinitrobenzene. Strain gauge transducers were sewn onto the serosal surface of the colon(More)
Ergonomic studies often use worker estimated hand force reproduced on a dynamometer to quantify force exposures but this method has not been well-studied in real work settings. This study evaluated the validity of worker estimates of hand force in a field study and determined the misclassification of worker estimated hand force exposures compared to(More)
We investigated whether Clostridium difficile toxin alters colonic tissue levels of vasoactive intestinal peptide (VIP) at the expense of changes in colonic motility in the isolated perfused rabbit left colon. Colonic inflammation was induced by the intracolonic administration of 10(-8) M C. difflcile toxin. Strain gauge transducers were sewn onto the(More)
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