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: If you want to become a nurse practitioner you will need a bachelor's of science in nursing degree which has duration of four years. Once you are done with this, you will need to enroll in a master's of science in nursing.: There is no exact answer to your question as there is more than one route that you can take in order to become a nurse. You can go for a four year bachelor's of science in nursing degree or a two year associate degree.