P pulmonale), but have a low predictive value (~20%). A P wave with increased amplitude can indicate hypokalemia. It can also indicate right atrial enlargement. A P wave with decreased amplitude can indicate hyperkalemia. Bifid P waves (known as P mitrale) indicate left-atrial abnormality-e.g. dilatation or hypertrophy.
SYSTEM is a schema..... Technically -- A schema is the set of metadata (data dictionary) used by the database, typically generated using DDL. A schema defines attributes of the database, such as tables, columns, and properties. A database schema is a description of the data in a database.
Stat, an abbreviation of photostat. Stat, an abbreviation of the Latin statim, immediately, often used in medical contexts such as in hospital emergency rooms. Stat, an abbreviation of statistic. Stat, an abbreviation of statistics, more commonly stats in British English contexts.