---
title: "Otitis Media with Effusion"
description: "ENT notes on Otitis Media with Effusion - causes, pathology, clinical features, investigations, and treatment."
source: "The ENT Resident"
author: "Dr. Mausumi Das"
canonical_url: "https://www.theentresident.com/ent-notes-lectures/otitis-media-effusion-glue-ear"
categories: ["Otology"]
video: "https://www.youtube.com/watch?v=hi3ffMUMrqY"
image: "https://media.theentresident.com/og-images/otitis-media-effusion-glue-ear.png"
---

# Otitis Media with Effusion

ENT notes on Otitis Media with Effusion - causes, pathology, clinical features, investigations, and treatment. Watch the full video lecture on YouTube: https://www.youtube.com/watch?v=hi3ffMUMrqY

## 👂 Otitis Media with Effusion (OME)

Otitis Media with Effusion (OME) is a **very common pediatric ENT condition** and a **high-yield topic** for theory exams, vivas, and routine clinical practice.

Children may present with:
- Blocked or full sensation in the ear  
- Poor response to calls  
- Inattention in class  
- Declining scholastic performance  

➡️ **OME should always be suspected in such cases.**

---

### 📌 Definition of Otitis Media with Effusion 

**Otitis Media with Effusion (OME)** is defined as the **presence of non purulent fluid in the middle ear cleft behind an intact tympanic membrane**, **without signs of acute infection**.

🔑 **Tympanic membrane is intact**

---

### 🔄 Synonyms of Otitis Media with Effusion 

- Serous otitis media  
- Secretory otitis media  
- Nonsuppurative otitis media  
- **Glue ear** (most commonly used term)

> What is the most common cause of acquired conductive hearing loss in children?

> What is the most common age group in whom we see Otitis Media with Effusion?

---

### ❄️ Seasonal Variation

- More common in **winter**

> Why is OME more commonly seen during winters?

---

### ⚠️ Etiology & Risk Factors of Otitis Media with Effusion 

#### 🔑 1. Eustachian Tube Dysfunction (Most Important)

Any factor causing **Eustachian tube obstruction** can result in OME.

> What are some diseases where we see Otitis Media with Effusion due to Eustachian tube dysfunction?

#### 🌼 2. Allergy

- Seasonal or perennial
- Causes mucosal edema → Eustachian Tube blockage

#### 🦠 3. Unresolved Acute Otitis Media

- Inadequate dose / duration of antibiotics
- Leads to persistent low grade inflammation

#### 🧫 4. Viral Infections
 
- Increase secretory activity of middle ear mucosa

> What viral infections lead to Otitis Media with Effusion?

#### 🔁 5. Gastroesophageal Reflux Disease (GERD)

- Common in infants
- Pepsin causes mucosal damage
- Reflux enters middle ear via ET

---

### 🔬 Pathogenesis of Otitis Media with Effusion 

1- **Eustachian Tube Dysfunction** (Most Important)

> How does Eustachian Tube Dysfunction lead to the development of Otitis Media with Effusion?

2- **Ascending Infection Theory**

- Subclinical nasopharyngeal infection
- Refluxed secretions enter middle ear
- Bacterial biofilm formation
- Persistent inflammation

3- **Inflammatory Theory**

- Allergens/irritants → mucosal edema
- ET obstruction → effusion formation

---

### 🧬 Pathology of Otitis Media with Effusion 

#### 👀 Gross Changes

- Thickened, edematous middle ear mucosa
- Effusion: serous → mucoid → mucopurulent

> What are the Histopathological changes seen in Otitis Media with Effusion?

> What is the composition of effusion seen in OME?

---

### 🦠 Microbiology of Otitis Media with Effusion 

(Not primarily infective, but organisms may be present)

- Haemophilus influenzae
- Streptococcus pneumoniae
- Moraxella catarrhalis  

➡️ Often form **biofilms**

> What is the most common micro organism isolated in Otitis Media with Effusion?

---

### 🗂️ Classification of Otitis Media with Effusion 

| Type | Duration |
| --- | --- |
| Acute OME | < 3 weeks |
| Subacute OME | 3 weeks – 3 months |
| Chronic OME | > 3 months |

---

### 🩺 Clinical Features of Otitis Media with Effusion 

#### 🧏 Symptoms

- **Hearing loss (most common)**
- Ear fullness / blockage

- No pain or fever
- Speech delay
- Poor school performance

> What type of hearing loss in seen in Otitis Media with Effusion?

---

#### 🔦 Otoscopic Findings

- Dull, opaque tympanic membrane

- Amber/yellow coloration
- Loss of cone of light
- Retraction of pars tensa
- Air-fluid level / air bubbles
- Reduced mobility on pneumatic otoscopy

> What are the stages of Pars Tensa Retraction?

> What are the features of Tympanic membrane retraction?

> What are the findings of Tuning fork tests in Otitis Media with Effusion?

---

### 🧪 Investigations of Otitis Media with Effusion 

#### 🎼 Pure Tone Audiometry

- Conductive hearing loss (< 40 dB)

#### 📉 Impedance Audiometry

- **Type B tympanogram (flat curve)**

#### 🩻 X-ray Nasopharynx

- Enlarged adenoids

#### 🧠 CT / MRI

- Only if malignancy suspected

---

### 💊 Treatment of Otitis Media with Effusion 

#### 👀 Observation (First Line)

- Most cases resolve spontaneously
- Parental counseling essential

---

#### 💉 Medical Management

- Nasal decongestants

- Saline irrigation

- Antihistamines (if allergic)

- Antibiotics: limited role

- Eustachian Tube ventilation:
  - Valsalva
  - Chewing gum
  - Politzerization

---

#### 🛠️ Surgical Management

**1. ✂️ Myringotomy + Aspiration**

- Incision in **anteroinferior quadrant**
- Beer can principle

> Why is incision given in anteroinferior quadrant in OME?

> What is Beer can principle in OME?

**2. 🔩 Grommet (Ventilation Tube)**

- Maintains aeration
- Spontaneous extrusion

> What is the indication of Grommet insertion in OME?

**3. 🏥 Treat Underlying Cause**

- Adenoidectomy
- Tonsillectomy (if indicated)

---

### 📈 Prognosis of Otitis Media with Effusion 

- Excellent
- Hearing usually recovers completely

> What are the complications of Long Standing OME?

---

## About This Note

This free ENT note on Otitis Media with Effusion was written by Dr. Mausumi Das and is paired with a corresponding video lecture.

Canonical page of this note: https://www.theentresident.com/ent-notes-lectures/otitis-media-effusion-glue-ear

When citing or referencing this content, please credit The ENT Resident and link to the canonical page above.

## Related Notes by Category

- Otology: https://www.theentresident.com/ent-notes-lectures/category/otology.md

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The ENT Resident is an educational website and resource library created by Dr. Mausumi Das (MS ENT) for ENT residents, ENT postgraduates preparing for exams, and MBBS students.

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