CEN Review 2025/2026 – 100+ Correct Questions with Rationales | GI Emergencies, Respiratory Patterns, Pediatric Triage, Abdominal Quadrants, LOC Mnemonics & Dehydration Management

This comprehensive review document features 100+ accurately answered questions tailored to the Certified Emergency Nurse (CEN) exam 2025/2026, accompanied by clinical rationales and updated mnemonics for real-world application. The questions are categorized into high-yield emergency nursing topics and include diagnostic strategies, assessment tools, and treatment priorities commonly tested on the CEN exam. Key topics include: Gastrointestinal Emergencies: Hallmark signs of bowel obstruction, peptic ulcer disease, H. pylori management, appendicitis rupture indicators, barium enema for intussusception Respiratory Patterns & Conditions: Cheyne-Stokes, apneustic, and eupnea respirations; implications for neurological or systemic deterioration Pediatric Triage Mnemonics: CIAMPEDS (Chief complaint, Immunizations, Allergies, Medications, etc.), Pediatric Assessment Triangle, AVPU (Alert, Verbal, Pain, Unresponsive) Abdominal & Vascular Anatomy: Identification of organ locations by quadrant, vessel mapping, recognition of emergency symptoms linked to abdominal pain Dehydration & Fluid Management: Oral electrolyte therapy for mild pediatric dehydration, fluid shift risks in infants and elderly Emergency Protocols & Assessment: Early medication caution in appendicitis, PQRST pain assessment, AVPU consciousness scale, triage interview tools The guide is ideal for CEN candidates needing clear and correct emergency nursing explanations with both textbook reasoning and current clinical standards. Recommended for: Courses: Emergency Nursing, Advanced Pathophysiology, Pediatric Emergency Care Programs: BCEN CEN Certification, ED Onboarding Curriculum, Emergency Clinical Decision-Making Training Users: CEN exam candidates, emergency nurses, pediatric triage nurses, nursing students, and nurse educators Keywords: CEN 2025, bowel obstruction signs, gastritis treatment, AVPU, CIAMPEDS, intussusception, barium enema, abdominal quadrant anatomy, Cheyne-Stokes respirations, pediatric dehydration, electrolyte solution, RLQ pain, eupnea, apneustic breathing, PQRST pain scale, pediatric assessment triangle, H. pylori, acute gastroenteritis, level of consciousness, emergency triage