The effect of the total intravenous anesthesia compared with inhalational anesthesia on the surgical field during endoscopic sinus surgery.

Background: Bleeding during endoscopic sinus surgery (ESS) may increase complications and negatively effect the surgery and its outcome. The aim of this study was to compare the surgical field in patients in whom total intravenous anesthesia (TIVA) is used as opposed to inhalation anesthesia. A prospective randomized controlled trial was performed.

Trends in selenium status of South Australians.

Objective: To assess trends in selenium status in South Australians from 1977 to 2002.

Design: Six cross-sectional surveys.

Participants: 117 participants in 1977, 30 in 1979, 96 and 103 (separate surveys) in 1987, 200 in 1988, and 288 volunteer blood donors in 2002.