NEW ORLEANS — One in six elderly patients who visit an emergency department receives a potentially inappropriate medication, according to a national study. That adds up to an estimated 2.7 million geriatric patients each year who get one or more medications with unfavorable risk-benefit ratios because of age-related changes in pharmacodynamics, according to Dr. William J. Meurer, who spoke at the annual meeting of the Society for Academic Emergency Medicine. If the geriatric individual was prescribed two or more medications during their time in the emergency department, the odds that at least one of them would be potentially inappropriate jumped...