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.
ADN and ASN degrees normally take two years to complete, although some three-year programs exist. Employment status also determines how long it takes to complete an RN associate degree, as working full-time makes completing an associate degree in two years difficult.