The HESI RN NCLEX review book is a comprehensive study guide designed to help nursing students prepare for the NCLEX-RN exam. It covers a wide range of topics including medical-surgical nursing, pediatric nursing, maternal and newborn nursing, psychiatric nursing, and more. The book includes practice questions, rationales, and test-taking strategies to help students succeed on the exam. It is a valuable resource for anyone looking to pass the NCLEX-RN and become a registered nurse.