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.
RN to BSN programs take about one year to complete. Once you get your BSN degree, then you need to complete a nurse practitioner program to get your master's in nursing (MSN) degree. These programs take about two to three years to complete. So, overall you will need about three to four years of schooling to become a nurse practitioner without an accelerated program.