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.
This is the fastest path to becoming a registered nurse as most associateâs degree programs last about two to three years. Bachelorâs Degree Programs An aspiring RN can earn a bachelorâs of science in nursing (BSN) in four years at a college or university. If youâre already an RN, you can enroll in an RN-to-BSN program which is geared specifically for RNs who have an associateâs degree or nursing diploma. This path usually takes about two to three years.