CEN Exam Prep vs Zero Deficit

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Pass the CCRN exam with Zero Deficit — critical care nursing certification prep built by ICU nurses who actually passed. EVERYTHING YOU NEED TO PASS • 695+ CCRN practice questions with detailed rationales, covering every body system on the AACN exam blueprint • 8 in-depth study guides weighted exactly like the real exam: Cardiovascular (17%), Respiratory (15%), Multisystem (14%), Neurology (12%), Renal, GI, Endocrine, Hematology • 200-question timed CCRN exam simulation with scoring and a readiness level • Two 100-question practice quizzes to build test-day stamina • AI-powered question generator that creates fresh questions tuned to your weak areas • Spaced-repetition flashcards based on cognitive science • High-yield cheat sheets and question-breakdown strategy training ICU CLINICAL REFERENCE • 77-medication ICU drug reference: vasopressors, sedation, anticoagulants, antiarrhythmics and more — with typical dose ranges • Hemodynamic monitoring guide: normal values, PA catheter waveforms, shock profiles • Shock, ABG and arrhythmia flowcharts for rapid review STAY ON TRACK • Exam countdown with readiness tracking • Daily question notifications that keep your streak alive • Progress analytics by body system so you always know where to focus • Study streaks, achievements and a weekly leaderboard BUILT FOR ICU NURSES, BY ICU NURSES Every feature came from real feedback during the 30 most stressful days before exam day. 12-hour shift followed by a 2-hour study session? We built the app we wish we'd had. STUDY ANYWHERE Print any study guide as a clean, formatted PDF for break-room review. All 8 body-system study guides and their quizzes are free — no account required. WHO USES ZERO DEFICIT • ICU registered nurses preparing for AACN CCRN (Adult) certification • CVICU, MICU, SICU, NSICU and CCU staff • ER nurses transitioning to critical care • Travel nurses studying between assignments • Nurse managers earning the CCRN to stay clinical SIMPLE PRICING Free: all 8 body-system study guides + system quizzes. A free account starts a 3-day full-access trial — no credit card required. Go premium with Monthly, Yearly or Lifetime access (auto-renewable subscription or one-time lifetime purchase) to unlock the full question bank, exam simulation, cheat sheets, ICU drug reference and flashcards. Content is written and source-checked against FDA labels and major clinical guidelines (AHA/ACLS, Surviving Sepsis Campaign, SCCM). Educational material — not medical advice. CCRN® is a registered trademark of AACN Certification Corporation. Zero Deficit is an independent study platform and is not affiliated with or endorsed by AACN.