I've been a dialysis tech for 18 months and my facility is encouraging us to sit for the CCHT this year. Most of what I do on shift feels very familiar when I read through the exam objectives - cannulation, machine setup, monitoring patients during treatment. But I know certification exams have a way of testing things differently than real-world knowledge.
I started doing practice questions about 3 weeks ago and I'm scoring between 71% and 76% depending on the topic. Water treatment questions are surprisingly tough for me - I understand the basics of RO systems from training but the question wording on specifics like conductivity levels and bacterial action limits feels like it's testing a level of detail I don't deal with directly on the floor.
My study plan right now is 1 hour per day after shifts plus longer sessions on my days off. I work 4 days a week so energy is a real factor - some nights the last thing I want to do is open a study guide after a 10-hour shift. Has anyone managed to pass while working full dialysis schedules?
Also - the BONENT vs NNCC versions of the CCHT exam. I keep seeing both mentioned. Is there actually a meaningful difference in how they test or should I just pick one and go?
18 months of floor experience is actually more than a lot of test-takers have. The clinical scenarios on the exam map closely to real situations - you'll recognize the problems even when the answer choices try to confuse you. Trust your floor knowledge on those.
BONENT and NNCC both cover essentially the same content - the core hemodialysis competencies are the same. BONENT is slightly more widely recognized at large health systems but both are legitimate. Pick whichever testing center location is more convenient.
Water treatment is almost always the section that surprises floor techs. You do the work but don't necessarily think about the numbers. Flashcards for conductivity limits, endotoxin action levels, and the specific stages of the RO process made a big difference for me.
Passed while working 4-day dialysis weeks. The tiredness is real but 45-60 minutes of focused review on your off days adds up fast. I blocked every Tuesday and Thursday morning for 2 hours each and hit my target score in 9 weeks.