Summary of Clinical Management of Epistaxis (Nosebleeds)
Clinical Management of Epistaxis (Nosebleeds) Guide for Students
Introduction
Epistaxis (nosebleed) is a common clinical problem involving bleeding from the nasal cavity. This material focuses on epidemiology, anatomy, causes, risk factors, diagnostic approach, complications, and evidence-based background information — excluding step-by-step management strategies, which are covered elsewhere.
Definition: Epistaxis is bleeding originating from the nasal mucosa or its vascular supply inside the nasal cavity.
Epidemiology and Clinical Context
- Incidence: Epistaxis is a frequent reason for emergency-department visits across age groups. Studies show peaks in children and older adults.1,2
- Settings: Presentation varies by season and geography; hereditary conditions (e.g., hereditary hemorrhagic telangiectasia) increase lifetime risk.3,4
Nasal Vascular Anatomy — why bleeding often occurs
Understanding the nasal blood supply explains common bleeding sites.
Key vascular regions
- Kiesselbach plexus (Little area): Anterior septum where multiple arteries anastomose — common site for anterior epistaxis.
- Sphenopalatine artery branches: Posterior lateral nasal wall and posterior septum — implicated in posterior epistaxis.
Definition: Kiesselbach plexus is a vascular network on the anterior nasal septum formed by contributions from the anterior ethmoidal, sphenopalatine, greater palatine, and superior labial arteries.
Table: Major arterial contributors and typical clinical relevance
| Artery | Typical territory | Clinical relevance |
|---|---|---|
| Anterior ethmoidal artery | Superior/anterior septum | Contributes to Kiesselbach area |
| Sphenopalatine artery | Posterolateral nasal wall, posterior septum | Often source in posterior bleeds |
| Superior labial branch (facial artery) | Anterior septum, vestibule | Contributes to anterior bleeds |
Causes and Risk Factors
- Local nasal mucosal factors:
- Trauma (digital trauma, foreign body, instrumentation)
- Local inflammation or mucosal atrophy (e.g., chronic rhinitis)
- Anatomic lesions (septal deviation, angiofibroma)
- Systemic factors:
- Hypertension (association present; causality uncertain). A meta-analysis found an increased odds of epistaxis in patients with hypertension (odds ratio $1.53$, 95% CI $1.18$ to $1.99$) but causation remains unclear.45
- Antithrombotic medications (antiplatelet agents, anticoagulants) — increase bleeding tendency
- Coagulopathies (inherited or acquired)
- Vascular disorders:
- Hereditary hemorrhagic telangiectasia (HHT) — mucosal telangiectasias cause recurrent bleeding3,4
Diagnostic Approach (focused on assessment and investigations)
This section emphasizes how to evaluate a patient presenting with epistaxis, without detailing management techniques.
Initial assessment priorities
- Assess hemodynamic stability and airway risk — determine need for urgent resuscitation.
- Obtain focused history:
- Timing and character of bleeding (unilateral vs bilateral, continuous vs intermittent)
- Triggering events (trauma, nose-picking, recent nasal surgery)
- Medication history (anticoagulants, antiplatelet agents, topical agents)
- Past episodes and severity, family history of bleeding disorders or HHT
- Focused physical exam:
- Inspect anterior nasal cavity (anterior rhinoscopy) for visible bleeding sources
- Assess posterior bleeding signs (blood in oropharynx, bilateral heavy bleeding)
When to use investigations
- Labs to consider when bleeding is severe, recurrent, or patient is on anticoagulants:
- Complete blood count (CBC) to assess hemoglobin
- Coagulation studies as indicated (INR, PT, aP
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Epistaxis Overview
Klíčová slova: Epistaxis, Epistaxis management
Klíčové pojmy: Epistaxis is bleeding from nasal mucosa or its vascular supply., Kiesselbach plexus on the anterior septum is the common site for anterior epistaxis., Sphenopalatine artery branches are often involved in posterior epistaxis., Hypertension is associated with higher odds of epistaxis (OR $1.53$, 95% CI $1.18$–$1.99$) but causality is uncertain., Obtain CBC and coagulation studies when bleeding is severe, recurrent, or patient is anticoagulated., Consider nasal endoscopy for localization in persistent or posterior bleeding., Hereditary hemorrhagic telangiectasia causes recurrent mucosal bleeding and warrants systemic screening., Intranasal vasoconstrictors can affect blood pressure and have rare cardiovascular risks., Hemostatic matrices and sealants have trial evidence for persistent bleeding, but choice is context-dependent., Children often bleed from digital trauma or foreign bodies; evaluate for posterior sources in atypical cases.