Select a Community
Are you sure you want to trigger topic in your Anconeus AI algorithm?
You are done for today with this topic.
Would you like to start learning session with this topic items scheduled for future?
Adenovirus
9%
7/78
Moraxella catarrhalis
49%
38/78
Pseudomonas aeruginosa
5%
4/78
Staphylococcus aureus
21%
16/78
Streptococcus pyogenes
17%
13/78
Select Answer to see Preferred Response
This patient is presenting with fever, cough, purulent nasal discharge, and tender maxillary sinuses, which suggests a diagnosis of acute bacterial rhinosinusitis. Of the answer choices listed, Moraxella catarrhalis is the most common cause of acute bacterial rhinosinusitis. Acute bacterial rhinosinusitis classically presents with cough, purulent nasal drainage, facial pain and swelling, and fever. As seen in this patient, viral rhinosinusitis is the most frequent predisposing factor for acute bacterial rhinosinusitis. The most common infectious agents are Streptococcus pneumoniae, Haemophilus influenzae, and Moraxella catarrhalis. Due to increasing antibiotic resistance, the treatment of choice is oral amoxicillin-clavulanic acid. Incorrect Answers: Answer 1: Adenovirus is a common cause of viral rhinosinusitis, but this patient’s worsening symptoms and purulent drainage are more consistent with a bacterial rhinosinusitis. Answer 3: Pseudomonas aeruginosa is a more common cause of rhinosinusitis in immunocompromised patients with indwelling nasal tubes. Answer 4: Staphylococcus aureus has been associated with chronic sinusitis, but it is not a common pathogen causing acute bacterial rhinosinusitis. Answer 5: Streptococcus pyogenes commonly causes pharyngitis, but S. pneumoniae is the Streptococcus species that commonly causes acute bacterial rhinosinusitis. Bullet Summary: The most common causes of acute bacterial rhinosinusitis are Streptococcus pneumoniae, nontypeable Haemophilus influenzae, and Moraxella catarrhalis.
4.2
(5)
Please Login to add comment