Educators, students, and nurses love this quick and indispensable reference tool. Focusing on clinical "need-to-know" information -- how to calculate common medication formulas, coagulation values, the normal ranges of vital signs -- rather than simply the "nice-to-know", RNotesÃ?Â¢Ã¢??Ã?Â¢ combines commonly used, but rarely memorized, clinical information with patient assessment tools and worksheets. And it does it all in right on your PDA. Students can refer to RNotes time and again for the delivery of safe and efficient nursing care.