1 Infants: Lethargy, weakness, poor feeding, constipation, poor head control, poor gag and sucking reflex.  Children and adults: Double vision, blurred vision, drooping eyelids, slurred speech, difficulty swallowing, dry mouth and muscle weakness.
After completing an ADN degree one can take the NCLEX-RN licensure exam in order to become a registered nurse. An associate's degree in nursing can take two years and at times also three years to compete.
A: In order to become a nurse, you must complete a 2 year associate's or 4 years bachelor's degree program in nursing. Upon graduation, you should obtain an RN certification and pursue a specialization through an accredited MSN degree program.: The answer to the question on how to become a nurse practitioner in 2 years needs explanation. Students can complete their certification in Nursing in 2 years from a community college and 4 years from a state school.