Lpn stands for licensed practical nurses. They play a very important role in hospitals and clinics where patients come for cure of different types of diseases. These nurses are fully trained for handling all types of instruments that can be used in a hospital. They usually are trained to handle all types of work that are required at the bed side of the patient including temperature taking, taking the blood pressure, taking blood samples and giving medicines under supervision of a doctor. These nurses become nurses after taking proper courses from nursing schools. Many states have this as a rule that nurses cannot join hospitals before they get a certificate. Pays of these nurses are generally fixed by the state so that they are not misused by clinics and hospitals. The course is from 6 months to two years. You can find all the related information on the Internet.

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