Along with the AAP, other major medical associations have been raising concerns about confusing measurements for oral medication for years. The Institute for Safe Medication Practices, the U.S. Food and Drug Administration (FDA), and the Centers for Disease Control and Prevention (CDC), have all advocated for clarifying dosages and allowing doctors to move toward the metric system.
Although the AAP’s new guidelines do not address this, some doctors also recommend switching to recording weight and body temperature in metric measurements because that data is used to calculate effective medication dosages, and it can be confusing for doctors to switch back and forth.
The U.S. is one of just three countries in the world that doesn’t currently use the metric system — something that remains a source of frustration for metric enthusiasts and scientists alike. Some advocates argue that failing to move the country toward the metric system has ultimately left Americans more scientifically illiterate than residents of other countries, because scientists and non-scientists are not speaking the same language.
Article Appeared @http://thinkprogress.org/health/2015/03/30/3640390/pediatricians-metric-system/