ear infection - abrahem

[ArchivalUser]

A 2-year-old boy is brought to the office for a follow-up visit after being diagnosed with an ear infection 2 weeks earlier. His mother says that he is still complaining of ear pain even though he finished the 10-day course of amoxicillin that your partner had prescribed. While reviewing his chart you notice that this mother does not believe in immunizations and despite encouragement and counseling, has kept her children unimmunized. His temperature is 38.1 C (100.6 F). Physical examination shows an erythematous and bulging right tympanic membrane, a loss of light reflex, and decreased motility of the tympanic membrane. The left ear is unremarkable. A culture of the right middle ear grows Gram-negative diplococci. At this time the most correct statement about his condition is:
A. Appropriate treatment is needed to prevent the development of rheumatic fever
B. Bronchopulmonary infections and bacteremia are commonly seen in healthy adolescents and young adults with this infection
C. The full routine recommended immunization series would most likely have prevented this infection
D. The responsible bacteria is part of the normal flora of the upper respiratory tract
E. The responsible bacteria rarely produces β-lactamase that mediates resistance to penicillins

[ArchivalUser]

d ear infection

[ArchivalUser]

ccc

[ArchivalUser]

cccccc

[ArchivalUser]

D. The responsible bacteria is part of the normal flora of the upper respiratory tract

[ArchivalUser]

D is the correct answer

[ArchivalUser]

is it moraxella?

[ArchivalUser]

Moraxella catarrhalis is a gram-negative, aerobic, oxidase-positive diplococcus
For most of the 20th century, M catarrhalis was considered a saprophyte of the upper respiratory tract with no significant pathogenic consequences.
Although the commensal status of M catarrhalis in the nasopharynx is still accepted, the organism is a common cause of otitis media and sinusitis and an occasional cause of laryngitis.
In the US: M catarrhalis is the third most common cause of otitis media and sinusitis in children (following Streptococcus pneumoniae and Haemophilus influenzae). M catarrhalis is estimated to be responsible for 3-4 million cases of otitis media annually, with an associated direct or indirect health care cost of $2 billion each year

[ArchivalUser]

i think the child has Hemophilus influenza. why is choice C wrong?

[ArchivalUser]

C. its Hemophilus influenzae, the most common cause of otitis media, and immunization most likely would prevent it.