We are looking at the effects of the pain reliever ibuprofen on changes in muscle and bone due to exercise in older adults.

The purpose of this randomized, double-blind study is to evaluate the utility of transitioning benzodiazepine sedation to dexmedetomidine in medical or surgical ICU patients requiring sedation when tracheal extubation is nearing.

"The heparin study" is comparing the current standard of care for DVT prophylaxis (SQH tid) with a goal-directed IVH infusion (ptt 40-45).

The objective of this study is to monitor liver function tests (blood levels of an indicator of liver function) of healthy people taking the maximum labeled daily dose of acetaminophen compared to people taking placebo for 16 to 40 days.

This study is designed to determine the effect of administering parenteral glutamine dipeptide on rates of nosocomial infections and hospital mortality in patients requiring SICU care AND parenteral nutrition after cardiac, vascular or intestinal surgery. Consented patients are randomized to receive standard TPN or glutamine dipeptide-supplemented TPN.