CEN HEENT Study Guide and Practice Questions
Review head, eye, ear, nose, and throat findings that threaten sight, airway, or neurological function. The first priority changes with the pattern. This free CEN HEENT study guide follows the current BCEN outline and includes two short practice questions. [1]
What BCEN expects in Head, Eye, Ear, Nose, Throat Emergencies
BCEN organizes this domain into head, eye, ear, nose, and throat groups. It names nine eye problems alone; the study goal is a safe first step for each presentation rather than a list of anatomy terms. [1]
This free guide covers high-yield review. The paid course contains substantially more. Get the full HEENT lesson path, detailed explanations, clinical decisions, case labs, and CEN-style practice with complete answer rationales. See what is included in the course.
Facial nerve, maxillofacial infection, trauma
Differentiate isolated weakness from stroke, watch facial injury for airway/bleeding compromise, and assess deep facial infection.
Abrasion, ulcer/keratitis, infection, burns, foreign body
Assess acuity and exposure; chemical burns need immediate irrigation and possible penetrating injuries need protection.
Pressure, retinal artery occlusion, retinal detachment, ocular trauma
Sudden vision loss, a curtain across vision, or a painful red eye with decreased acuity warrants urgent escalation.
Vestibular symptoms, ear infection/foreign body, epistaxis/nasal foreign body
Recognize central neurologic causes of new vestibular symptoms and airway/bleeding risk with nose problems.
Epiglottitis and peritonsillar abscess
A muffled voice, drooling, stridor, or inability to handle secretions makes airway planning the priority.
Make It Stick: The eye has a vision clock; the throat has an airway clock. Both ignore the waiting-room clock.
Six HEENT areas to review
Focus on recognition, key differences, and initial priorities. Detailed interpretation, management sequences, and case reasoning are developed in the paid lessons.
1. Chemical eye exposure: stop ongoing injury
Acid or alkali exposure calls for immediate copious irrigation. Product identification, detailed examination, and specialist input matter, but should not delay the initial response. Assess associated exposure and protect staff from contamination. [3] [4] [5]
CEN Thinking: Visual acuity is important, but chemical contact continues causing damage while the team waits. The full assessment includes reassessment after decontamination rather than a single examination.
2. Sudden vision loss: pain is not the measure of urgency
Abrupt painless monocular vision loss can represent retinal artery occlusion and requires emergency evaluation. Flashes, new floaters, or a curtain-like visual change can suggest retinal detachment. A painful red eye with reduced vision, halos, headache, or nausea raises concern for elevated intraocular pressure. [3] [4] [6]
Key distinction: Both painful and painless presentations can threaten sight. The pattern, timing, and change in visual function guide urgency—not pain alone.
3. Ocular trauma, abrasion, foreign body, and infection
Review the mechanism, visual acuity, pupils, and possibility of penetration. Suspected open-globe injury needs protection without pressure and urgent ophthalmic evaluation; avoid manipulating an embedded object. Superficial abrasion or foreign body follows a different assessment pathway. [3] [4]
Do not miss: Severe pain or reduced vision in a contact-lens wearer can signal keratitis or corneal ulceration. An apparently minor eye complaint should not override a concerning vision change.
4. Throat and maxillofacial threats
Drooling, muffled voice, stridor, difficulty handling secretions, or tripod positioning suggests an airway at risk. Epiglottitis, deep facial infection, and facial trauma can threaten patency; obtain early airway expertise and avoid unnecessary examination that agitates a precarious patient. [3] [4]
Peritonsillar abscess may present with unilateral throat pain, fever, trismus, and voice change. Initial priority: Assess breathing and secretion handling before treating the complaint as routine sore throat or dental pain.
5. Nose and ear emergencies
For an uncomplicated anterior nosebleed, forward positioning and pressure to the soft part of the nose are useful first measures. Ongoing heavy bleeding, anticoagulant use, or airway/perfusion effects changes the assessment. Ear and nasal complaints also include infection and foreign bodies. [3] [4]
Exam trap: A button battery is not a routine foreign body. Recognize urgent removal needs and avoid blind attempts that may push an object deeper or cause further injury.
6. Facial nerve and vestibular presentations
New facial weakness deserves a broader neurological check, especially with arm weakness, speech difficulty, gaze change, or ataxia. A single facial movement is not a complete stroke assessment. Review the timing and associated findings rather than settling on a label immediately. [3] [4]
With acute dizziness, severe gait instability or focal neurological findings raises concern for a central cause. CEN Thinking: “Vertigo” describes a symptom; it does not establish whether the patient has a peripheral or central disorder.
Three distinctions worth remembering
| Clue | What it changes |
|---|---|
| Chemical contact with the eye | Immediate irrigation is time-sensitive. |
| Sudden painless monocular visual loss | Urgent vascular/ophthalmic evaluation is needed. |
| Throat complaint + drooling or stridor | Airway assessment takes priority. |
On a phone, swipe sideways if needed. Use these reminders with the context and sources in the review above.
Before you move on: Can you distinguish immediate eye irrigation, sudden vision-loss evaluation, and a threatened airway? Review the clues that make an apparently local complaint a time-critical emergency.
Review exam format in the CEN Exam Guide, or use the main free CEN exam study guide to move between domains.
Two CEN HEENT practice questions
These original review questions check selected distinctions. They are not BCEN exam items or a readiness score.
A cleaning solution splashes into a worker’s eye. The patient has pain and can barely open it. Which action comes first?
- A.Complete visual acuity charting before treatment
- B.Begin immediate copious irrigation of the affected eye
- C.Patch the eye tightly and wait for the consultant
- D.Wait to identify the exact product before rinsing
An older adult reports sudden painless loss of vision in one eye 35 minutes ago. There is no redness or trauma. What is the priority?
- A.Offer routine optometry follow-up next month
- B.Apply a warm compress and reassess tomorrow
- C.Expedite emergency evaluation for retinal artery occlusion and possible stroke
- D.Treat as uncomplicated conjunctivitis
Get the full HEENT learning experience.
The paid version goes far beyond this free review. This page shows you what to revisit. The full Nurscience course teaches why the findings matter, how to choose the next action, and how to apply that reasoning to CEN-style questions.
- Structured head, eye, ear, nose, and throat lessons
- Detailed assessment and diagnostic distinctions
- Treatment and escalation decisions
- Case labs applying the findings to time-sensitive care
- Lesson quizzes and focused domain practice
- Complete rationales explaining correct and incorrect answers
Across all 11 domains, the full CEN prep course includes 1,600 practice questions, domain practice, and full-length exam preparation. It includes approximately 20 hours of written lesson material, or about 30 hours including completing each lesson quiz once. These are study-time estimates; your pace may vary.
Sources and review notes
Updated September 26, 2026. The BCEN outline effective July 2026 defines exam scope; emergency-nursing texts and authoritative clinical guidance inform the teaching points. This is an independent study resource, not an official BCEN publication or a replacement for local protocols.
- BCEN. CEN Examination Content Outline, effective July 2026.
- BCEN. CEN Certification Exam Resource List (2026).
- Emergency Nurses Association. Emergency Nursing Core Curriculum, 8th ed. Elsevier; 2027. Chapters 15 and 31.
- Emergency Nurses Association. Sheehy’s Manual of Emergency Care, 8th ed. Elsevier; 2024. Chapters 18 and 19.
- American Academy of Ophthalmology. Chemical (Alkali and Acid) Injury of the Conjunctiva and Cornea.
- American Heart Association. Management of Central Retinal Artery Occlusion: Top Things to Know.