Iodine deficiency during pregnancy may result in cretinism (mental retardation in children), deafness, autism, and delayed brain development and is the leading cause of preventable mental retardation. As the bodyâs iodine levels fall, hypothyroidism may develop, since iodine is essential for making thyroid hormone. While this is uncommon in the United States, iodine deficiency is the most common cause of hypothyroidism worldwide.
1 Practice nursing for a minimum of 960 hours during the previous five years. 2  Successfully complete an approved re-entry program within the two years preceding renewal. 3  Graduate from an OSBN-approved nursing program within the past five years.
To become a licensed practical nurse, individuals must complete an LPN education program and pass the National Council Licensure Examination for Practical Nurses (NCLEX-PN).ssential Information. Basic requirements for admission to a LPN program include a high school diploma or GED and possibly nursing assistant certification and the completion of certain classes. Students who complete LPN education programs are able to earn licensure and begin working within 1-2 years.