Artificial hydration at the end of life: balancing benefits and risks in the absence of conclusive evidence.

There is a lack of clear evidence regarding the benefits and harm of artificial hydration at the end of life. Trial findings are conflicting and inconclusive, offering little basis for recommendations. As a result, the advantages and disadvantages of artificial hydration remain largely anecdotal, and decisions about its use, withholding or withdrawal are often based on opinion rather than evidence.

Multispecies mass mortality of marine fauna linked to a toxic dinoflagellate bloom.

Following heavy precipitation, we observed an intense algal bloom in the St. Lawrence Estuary (SLE) that coincided with an unusually high mortality of several species of marine fish, birds and mammals, including species designated at risk. The algal species was identified as Alexandrium tamarense and was determined to contain a potent mixture of paralytic shellfish toxins (PST).

Limitations associated with managing chronic low back pain.

Non-specific chronic low back pain is an occupational hazard for nurses. It may result in persistent and disabling pain for some people. There are many techniques for investigating, assessing and treating chronic low back pain.

Effect of pulsed electromagnetic field therapy on experimental pain: A double-blind, randomized study in healthy young adults.

Previous studies suggested that pulsed electromagnetic field (PEMF) therapy can decrease pain. To date, however, it remains difficult to determine whether the analgesic effect observed in patients are attributable to a direct effect of PEMF on pain or to an indirect effect of PEMF on inflammation and healing. In the present study, we used an experimental pain paradigm to evaluate the direct effect of PEMF on pain intensity, pain unpleasantness, and temporal summation of pain.

Lactational Transfer of Polychlorinated-Biphenyls (PCBs) and Other Organochlorines in St. Lawrence Beluga Whales (Delphinapterus leucas).

This study uses an individual-based contaminant bioaccumulation model for marine mammals to explore factors controlling the transfer of PCBs from mother to calf via nursing in beluga from the St. Lawrence Estuary. Beluga blubber samples (n = 46), along with four matched milk samples from stranded animals over the 1986-1994 period were used for comparison with modelled results.