BCEN CEN exam - what practice score should I be hitting before I feel ready to sit?
I've been an ED nurse for 3 years and I'm finally sitting for the CEN. My manager basically implied it's expected for anyone who wants a charge role, so this isn't optional. I started studying 6 weeks ago at about 1.5 hours a day. My practice scores are at 66-68%, and the passing threshold I've seen referenced is 70%, so I know I need to close that gap.
The content areas I struggle with most are cardiovascular emergencies and toxicology. Cardio I understand mechanically but the CEN questions frame things differently from how I'd actually manage a patient. Toxicology I straight up don't see enough of — overdose calls tend to go to a different hospital in my system — so antidote pairing and toxidrome recognition is weak for me.
I've got the Sheehy's manual and a question bank with about 1,800 questions. I've gone through roughly 900. Is it worth cycling through them a second time or should I find different questions to avoid memorizing rather than learning?
Also: how accurate is the 70% benchmark for readiness? I've heard some people say they passed the actual exam while only hitting 65% on practice, and others who were at 75% and barely passed. The question bank difficulty varies so much I can't tell what's a realistic target.
Toxicology is heavily tested on the CEN relative to how often most ED nurses see it. Make a flashcard set for every major toxidrome: cholinergic, anticholinergic, sympathomimetic, opioid, and their antidotes. Naloxone dosing, flumazenil, atropine, N-acetylcysteine for Tylenol — know those cold because they're almost guaranteed to show up.
I studied for 10 weeks at 2 hours a day and hit 79% on practice by test week. The cardiovascular content clicked when I stopped thinking about it as test questions and started drawing out the pathophysiology for each condition. Time-consuming but it made the reasoning obvious instead of memorized.
I passed CEN at 3 years of ED experience. My practice scores were at 68% two weeks before the exam and I passed comfortably. The actual CEN questions are more straightforward than most third-party banks — less trick-wording, more direct clinical reasoning. If you're at 66-68% on hard questions, you're likely in better shape than that number suggests.
Cycling through the same 1,800 questions is fine as long as you're reviewing explanations, not just re-doing them. If you're finding you remember the answer from the first pass without understanding why, that's when you need new questions. Mix in the official BCEN practice exam — worth buying just to see the actual item style.