The IRB will ask for the DUHS Standard Language to be inserted into consent documents as appropriate to a study. This language has been vetted by the IRB, and covers a variety of topics. The IRB's Standard Language will help you describe highly technical medical terms and procedures in plain language.
IRB Standard Language, translated into Spanish, is available for many, but not all, of the topics covered in the English Standard Language.
Resources for Plain Language
The Duke University Medical Center Library has developed a helpful web page on health literacy and the communication of medical terminology in plain language.