Prevalence and Incidence of Middle ear infection
Middle ear infection Prevalence: Book Excerpts
Incidence (annual) of Middle ear infection:
7 million annually ... see also overview of Middle ear infection.
Incidence Rate:
approx 1 in 38 or 2.57% or 7 million people in USA [Source statistic for calcuation: "7 million annually" -- see also general information about data sources]
Incidence extrapolations for USA for Middle ear infection:
7,000,000 per year,
583,333 per month,
134,615 per week,
19,178 per day,
799 per hour,
13 per minute,
0 per second.
[Source statistic for calculation: "7 million annually" -- see also general information about data sources]
More Statistics about Middle ear infection:
Hospitalization statistics
All statistics for Middle ear infection
Prevalence/Incidence of Middle ear infection: Online Medical Books
16 MEDICAL BOOKS ONLINE!
Review excerpts from medical books online, free, without registration,
for more information about the prevalence and/or incidence of Middle ear infection.
Otitis media:
Causes and incidence
(Professional Guide to Diseases (Eighth Edition))
Otitis media results from disruption of eustachian tube patency. In the suppurative form, respiratory tract infection, allergic reaction, nasotracheal intubation, or positional changes allow nasopharyngeal flora to reflux through the eustachian tube and colonize the middle ear. Suppurative otitis media usually results from bacterial infection with pneumococcus, Haemophilus influenzae (the most common cause in children younger than age 6), Moraxella catarrhalis, beta-hemolytic streptococci, staphylococci (most common cause in children age 6 or older), or gram-negative bacteria. Predisposing factors include the normally wider, shorter, more horizontal eustachian tubes and increased lymphoid tissue in children, as well as anatomic anomalies. Chronic suppurative otitis media results from inadequate treatment for acute otitis episodes or from infection by resistant strains of bacteria or, rarely, tuberculosis.
Secretory otitis media results from obstruction of the eustachian tube. This causes a buildup of negative pressure in the middle ear that promotes transudation of sterile serous fluid from blood vessels in the membrane of the middle ear. Such effusion may be secondary to eustachian tube dysfunction from viral infection or allergy. It may also follow barotrauma (pressure injury caused by the inability to equalize pressures between the environment and the middle ear), as occurs during rapid aircraft descent in a person with an upper respiratory tract infection or during rapid underwater ascent in scuba diving (barotitis media).
Chronic secretory otitis media follows persistent eustachian tube dysfunction from mechanical obstruction (adenoidal tissue overgrowth or tumors), edema (allergic rhinitis or chronic sinus infection), or inadequate treatment for acute suppurative otitis media.
Acute otitis media is common in children; its incidence rises during the winter months, paralleling the seasonal rise in nonbacterial respiratory tract infections. Chronic secretory otitis media most commonly occurs in children with tympanostomy tubes or those with a perforated tympanic membrane.
» READ BOOK EXCERPT ONLINE »
Source: Professional Guide to Diseases (Eighth Edition), 2005
Otitis Media:
Otitis Media - epidemiology
(The 5-Minute Pediatric Consult)
- More common in fall and winter, and less common in spring and summer
- Inverse relationship with breastfeeding duration
Otitis Media - incidence
Increased incidence in those <2 years of age, with the peak incidence between 6 and 12 months of age
>
» READ BOOK EXCERPT ONLINE »
Source: The 5-Minute Pediatric Consult, 2008
Otitis Media and Sinusitis:
Epidemiology and Etiology
(Pediatric Infectious Disease)
The most common cause of chronic ear drainage in pediatrics is chronic
suppurative otitis media (CSOM). CSOM is defined as a chronic infection of the
middle ear and mastoid associated with a nonintact tympanic membrane or a
tympanostomy tube. CSOM may develop following an episode of acute otitis media
with perforation and subsequent development of chronic drainage. CSOM may also
be caused by a chronic perforation of the tympanic membrane in which the middle
ear becomes infected by environmental organisms. The bacteria causing CSOM
often differ from those of acute otitis media; the most common organisms
involved include
Pseudomonas aeruginosa and S. aureus. Rarely, this condition can be caused by Candida species or anaerobic bacteria.
» READ BOOK EXCERPT ONLINE »
Source: Pediatric Infectious Disease, 2004
About prevalence and incidence statistics:
The term 'prevalence' of Middle ear infection usually refers to the estimated population
of people who are managing Middle ear infection at any given time.
The term 'incidence' of Middle ear infection refers to the annual diagnosis rate,
or the number of new cases of Middle ear infection diagnosed each year.
Hence, these two statistics types can differ:
a short-lived disease like flu can have high annual incidence but low prevalence,
but a life-long disease like diabetes has a low annual incidence but high prevalence.
For more information see about prevalence and incidence statistics.
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