Developed by Phlip Varughese, BS, CHT, Joan Arslanian, MS, MPA, MSN, RN, CS, FNP, CNN, and John Sweeny, BS, MS, the Fourth Edition of this Study Guide contains 286 pages of questions and answers, case studies, a glossary of terms, graphs, charts and formulas which can be utilized as reference material. It is a great educational tool to preape for certification exams and for all dialysis technicians.