EENT #7 (Nose/Sinus) Flashcards
With rhino sinusitis, what is considered acute, what is considered subacute, and what is considered chronic.
Acute: 1-4 weeks
Subacute: 4-12 weeks
Chronic: > 12 weeks
Although most cases of acute rhino sinusitis are viral in nature (rhinovirus, influenza, and parainfluenza), what are some bacterial causes of this condition?
A….SMH
Strep Pneumo (MC)
Moraxella Catarrhalis
H. Influenzae
GABHS
Risk factors for acute rhinosinusitis
- Most common in setting of a viral URI
- Dental infections
- Smoking
- Allergies
- Cystic Fibrosis
Symptoms of acute rhinosinusitis
- Facial pain or pressure worse with bending down and leaning forward
- Headache
- Malaise
- Purulent nasal discharge
- Fever
- Nasal congestion
- Worsening symptoms after a period of improvement
Although imaging is not necessary if it is a classic presentation and uncomplicated case of acute rhinosinusitis, what imaging CAN be done and is the diagnostic of choice.
CT scan: imaging of choice
Sinus radiographs are usually not needed, but if ordered, what view is the best for acute rhinosinusitis?
Water’s view
However, what diagnostic gives a definitive diagnosis for acute rhinosinusitis?
Biopsy or aspirate
Management for acute rhinosinusitis
-Symptomatic management: decongestants (promote sinus drainage), analgesics, antihistamines, intranasal glucocorticoids, naval lavage
When are antibiotics indicated in a patient with acute rhinosinusitis?
If symptoms present for 10-14 days and worsening
What ABX is considered in a patient with acute rhinosinusitis if needed?
Amoxicillin-Clavulanic Acid
However, second line ABX for acute rhinosinusitis is
Doxycycline
What is chronic sinusitis defined as?
Inflammation of the nasal cavity and paranasal sinuses for at least 12 consecutive weeks
MC bacterial cause of chronic sinusitis
S. Aureus
What is the MC fungal cause of chronic sinusitis
Aspergillus
-Mucormycosis is the 2nd MCC
What diagnostic should be done for chronic sinusitis?
Biopsy or histology (allows for identification of organism and then determining the management)
What is important to remember about Mucormycosis (Zygomycosis)?
-Fungus rapidly dissects the nasal canals and eye into the brain. High mortality.
What are some common etiologies of mucormycosis?
- Mucor
- Rhizopus
- Absidia
- Cunninghamella
What is the biggest risk factor with mucormycosis?
Seen in diabetes mellitus (especially DKA) and immunocompromised states (post-transplant, chemotherapy, HIV)
Symptoms of mucormycosis
Rhino-orbital-cerebral infections: sinusitis that progresses to orbit and brain involvement
-Swelling, necrosis, black eschar on the palate, nasal mucosa, or face
What is the diagnostic of choice for mucormycosis and what do you see?
Biopsy: non-septate broad hyphae with irregular right-angle (90 degree) branching