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: To become a RN nurse you can either take ADN (Associate Degree in Nursing) or you can take BSN (Bachelors of Science in Nursing) degree. Associate's degree in nursing takes two years to complete while a BSN is more comprehensive and therefore takes four years to complete.: If you want to know how to become an RN fast then the first thing you need to do is enroll in an ADN or BSN program. These programs will equip you with skill and in-depth knowledge of nursing. You can then sit for the NCLEX-RN exam which is the final step to being an RN.