Biological monitoring of tungsten (and cobalt) in workers of a hard metal alloy industry.

Objectives: To evaluate a combined biomonitoring approach based on both cobalt and tungsten determination in workers of the hard metal alloy sector.

Methods: We enrolled 55 workers from a factory producing cutting tools for carpentry. Combined workroom air and biological monitoring of both cobalt and tungsten relied on inductively coupled plasma mass spectrometry determinations.

[Postoperative metabolic acidosis: use of three different fluid therapy models].

Intraoperative fluid administration is considered an important factor in the management of metabolic acidosis following surgical procedures. The aim of this study was to compare three types of intraoperative infusional models in order to evaluate their effect on acid-base changes in the immediate postoperative period as calculated by both the Henderson-Hasselbach equation and the Stewart approach. Forty-seven patients undergoing left hemicolectomy were enrolled in the study and assigned randomly to receiving 0.