Acute Rhinosinusitis Flashcards
Acute sinusitis lasts:
<12 weeks
Recurrent sinusitis means:
> 4 attacks/year with resolving period
Name the sinuses involved from most to least common:
Maxillary > ethmoid > frontal > sphenoid
What is the most common micro-organism in viral acute rhinosinusitis?
Rhinovirus
rhinosinusitis + conjunctivitis means the viral agent is most likely:
Adenovirus
Does purulent discharge in acute rhinosinusitis indicate bacteria?
No; it demonstrates the presence of neutrophils, which is characteristic of acute inflammation regardless of the etiology.
How can we tell if acute rhinosinusitis is viral or bacterial?
1) Persistent symptoms/signs compatible with acute rhinosinusitis, lasting >10 days without any clinical improvement.
2) Worsening symptoms/signs characterized by the new onset of fever, headache, or increase
in nasal discharge following a typical viral upper respiratory infection (URI) that lasted 5–6
days and were initially improving (‘‘doublesickening’’)
3) Severe symptoms/signs of high fever (39C) and purulent nasal discharge or facial pain lasting for at least 3–4 consecutive days
The bacteria most often responsible for acute rhinosinusitis is:
Strep. Pneumonia
Antihistamines are to be avoided in ABRS because:
Anticholinergic adverse effects
will thicken and dry secretions
Which antibiotics are given in ABRS?
1) Amoxicillin/clavulanate
2) Doxycycline
3) Azithromycin
The most common micro-organism to cause orbital spread is:
Streptococcus viridian
The most common cause of cavernous sinus thrombosis is:
Ethmoiditis
The most common micro-organism in cavernous sinus thrombosis is:
Coagulase +ve staph aureus
Signs and symptoms of cavernous sinus thrombosis?
1) Contralateral involvement of the other eye
2) Spiking fever
3) First nerve to be affected is VI (Abducens)
What is the most common cause of intracranial complications?
Subdural abscess
