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Etiology of Otitis media

  • The main cause of otitis media is eustachian tube dysfunction, which prevents normal ventilation and drainage of the middle ear.
  • The eustachian tube connects the middle ear to the nasopharynx and equalizes the pressure between them.
  • In children, the eustachian tube is shorter, wider, and more horizontal than in adults, making it more prone to obstruction by secretions, inflammation, or swelling.
  • The risk factors for otitis media include:
    • Age: most common in children under 2 years old and again at 5 to 6 years old
    • Season: more frequent in winter and spring
    • Allergies: can cause congestion and inflammation of the eustachian tube
    • Upper respiratory tract infections: can spread to the middle ear or cause eustachian tube blockage
    • Day care attendance: increases exposure to infectious agents
    • Bottle feeding: especially in a supine position, can cause reflux of milk into the eustachian tube
    • Passive smoking: can impair mucociliary clearance and immune function
    • Anatomic anomalies: such as cleft palate, Down syndrome, or craniofacial defects, can affect eustachian tube function
    • Immunodeficiency: can impair host defense against pathogens
    • Noncompliance with vaccinations: such as pneumococcal conjugate vaccine (PCV), Haemophilus influenzae type b (Hib) vaccine, and influenza vaccine, which can prevent some causes of otitis media

Questions on Etiology of Otitis media

Correct Answer is B

Explanation

The statement that "The risk factors for otitis media are not well-defined" is incorrect. The risk factors for otitis media are well-established, including factors like age (more common in children), exposure to smoke, attending daycare, and Eustachian tube abnormalities.

Correct Answer is D

Explanation

Passive smoking can increase the risk of otitis media. Exposure to secondhand smoke can cause irritation and inflammation in the Eustachian tubes, making individuals, especially children, more susceptible to ear infections.

Correct Answer is ["A","B","C"]

Explanation

The statement about the eardrum becoming red, swollen, and bulging due to the absence of effusion is incorrect. The presence of effusion behind the eardrum can cause it to appear red, swollen, and bulging, not the absence of effusion.

Correct Answer is C

Explanation

Skin rashes and allergic reactions are not mentioned as consequences of otitis media. Complications of otitis media primarily revolve around the auditory system and related functions.

Correct Answer is D

Explanation

Day care attendance is closely associated with an increased exposure to infectious agents, including the bacteria that can cause otitis media. Children in day care settings are in close contact with others, facilitating the spread of infections.

Correct Answer is ["B","D"]

Explanation

Otorrhea, which refers to discharge from the ear, is not a common symptom of AOM. Otorrhea is more commonly associated with chronic ear infections or other ear conditions but not necessarily with acute otitis media.

Correct Answer is A

Explanation

Immunization history of the child is important for the child's overall health, but it is not a specific symptom of otitis media. Immunizations do not directly influence the development or presence of otitis media.

Correct Answer is ["A","B","C","E"]

Explanation

Decreased mobility of the tympanic membrane can occur due to the accumulation of fluid in the middle ear, leading to impaired movement. This decreased mobility is often observed in acute otitis media and contributes to the diagnosis.

The eardrum appearing red and bulging is a typical finding in acute otitis media (AOM), not otitis media with effusion (OME). In AOM, the eardrum becomes red due to inflammation and bulges due to increased pressure from fluid buildup.

Inconsolable crying due to discomfort is a general symptom that can occur in children with various illnesses, including otitis media. While it indicates the child is in pain or discomfort, it is not a specific sign of hearing loss. Children may cry due to ear pain, but this symptom alone does not co

"I have no pain in my ear.”. Absence of ear pain is not consistent with otitis media. Otitis media is characterized by ear pain, especially in acute cases when there is inflammation and pressure in the middle ear. Lack of ear pain suggests the absence of this condition.

"I don't have a fever at all.”. The absence of fever is not consistent with acute otitis media. Fever is a common systemic response to infection and inflammation. In the context of otitis media, the presence of fever indicates a more severe or active infection.

Lip reading skills are not typically assessed in the context of otitis media. Otitis media primarily affects the auditory system, leading to hearing difficulties. While lip reading skills might be relevant for individuals with profound hearing loss, it is not a standard assessment for children with

The statement "I can balance perfectly" suggests that the child does not experience balance problems. This statement contradicts the typical symptoms associated with otitis media, which can include dizziness, unsteadiness, and balance issues. If the child can balance perfectly, it indicates that the

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