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.
In order to become an NP, a number of steps have to be followed first. These are: 1  Earning a nursing undergraduate degree. 2  This can be done through accelerated programs. 3  Becoming a registered nurse by passing the NCLEX-RN.