Arsenic and heavy metal accumulation by Pteris vittata L. and P. umbrosa R. Br.

This study compared the accumulation of arsenic, copper and chromium by Pteris vittata and Pteris umbrosa grown in a glasshouse in soil from a timber treatment facility. Soil was collected from three locations. Accumulation (as percentage removed) varied between these soils but was not related to soil concentration. P. vittata was more efficient than P. umbrosa, both in accumulating As and metals in the below-ground plant parts and in translocating As to the fronds. Under the experimental conditions, only P. vittata could be effectively used in soil from one location for phytoremediation purposes.

Traumatically injured Jehovah's Witnesses: a sixteen-year experience of treatment and transfusion dilemmas at a level I trauma center.

Traumatically injured Jehovah's Witnesses pose difficult management problems because of their refusal to accept blood transfusions. This retrospective review of all inpatient traumatically injured Jehovah's Witnesses at a level I trauma center over the past 16 years revealed 77 patients with 92% blunt and 8% penetrating injuries. The primary physician was aware of their unique religious status in only 32% of cases. Transfusion was performed in only 4 (5.2%) cases even though it was desired by the physician in 11 (14%) cases. One transfusion was performed against the patient's will. One minor was transfused using a court order. Two transfusions were performed in the trauma room before the patients' religious status was known. Major changes in therapeutic plans were made as a result of the patients' Jehovah's Witness status in 10 cases (13%). Early knowledge of the patient's religious status is essential to optimize patient care.