Upper Respiratory Tract Infection Flashcards
What are possible upper respiratory tract infection (URI) that have been discussed?
- Otitis Media
- Sinusitis
- Pharyngitis
- Laryngitis
- Common cold
What is Otitis Media?
Inflammation of the middle ear
What is considerd acute otitis media (AOM)?
Rapid symptomatic infection with fluid in the middle ear
What is considered otitis media with effusion (OME)?
No signs of acute illness but fluid in middle ear
Why is daycare considered a risk factor for AOM?
More likely to be exposed to resistant bacteria (also seen with recent antibiotic use)
What are common bacteria that may cause AOM?
- Streptococcus pneumonia
- Hemaophilis influenza
- Moraxella catarrhalis
What is the pathophysiology associated with AOM?
Nasopharyngeal viral infections impair eustachian tube function causing the mucosa mucociliary clearance promoting bacterial infection (children less able to drain tube compared to adults) with possible effusion from allergens/toxic exposure
What are the requirements for a diagnosis of AOM?
- Rapid onset of S/Sx
- Middle ear effusion finding with pneumatic otoscopy
- Inflammation indicated by either otoscopic evidence or otalgia
How is a severe AOM different from a non-severe AOM?
- Pain (mild vs moderate/severe)
- Fever (above vs below 39ºC, past 24h)
What treatment goal for patients with AOM?
Focus on symptom relief (i.e. pain, relief) and prevention of complications; Ususally resolves spontaneously with no treat
What are non-pharmacological therapies are available for treatment of AOM?
- External heat/cold (pain relief)
- Tympanostomy tubes (chronic OME)
- Adeniodectomy (Chronic nasal obstruction)
What is common ABX resistance observed in patients with AOM? (think common bacteria)
Penicillin-resistant Sreptococcus pneumoniae (PRSP)
When should ABX be used for AOM? (Think age dependent)
- < 6 months: Use ABX
- 6 M/O – 2 Y/O w/ certain DX: use ABX
- > 2 Y/O w/ certain DX and severe infection: use ABX Otherwise observe and treat if needed
T or F: When patients with AOM should consider penicillin allergies?
T
If patient has no allergy and no severe illness, what ABX should be considered for treatment?
-
Aminopenicillins
- Amoxicillin (high dose)
-
3rd Generation Cephalosporins
- Cefuroxime
- Cefpodoxime
- Cefdinir
If a patient has no allergies but severe illness, what ABX should be considered for treatment?
- Augmentin (Amoxicillin + Cavulanic Acid)
- Ceftriaxone (IV/IM)
If patient has a Type 1 allergy to penicillin, what ABX should be considered for treatment?
- Macrolides (Erythromycin)
- Clindamycin
- Trimethoprim/sulfamethoxazole
If a patient has a non-type-1 allergy, what ABX should be considered for treatment?
Non-severe:
- Cefuroxime
- Cefpodoxime
- Cefdinir
Severe:
- Ceftriaxone (IM/IV)
What analgesics are available for patients with AOM?
If fever:
- Acetaminophen
- Ibuprofen
If no fever:
- Benzocaine (topical; Auralgan drops)
What is the prognosis for patients being treated for AOM?
Should expect response from treatment within 72 hours with therapy
If symptoms persist/worsen reevaluate for proper diagnosis and treatment (prescence of fluid does not indicate treatment failure
What is sinusitis? Rhinosinusitis?
Inflammation of the paranasal sinuses
Involves contagious nasal mucosa (occurs in all viral respiratory infections)
What is the difference between acute and chronic rhinosinusitis?
Acute: symptoms up to 4 weeks
Chronic: more than 12 weeks
What is the pathophysiology of acute bacterial rhinosinusitis (ABRS)?
Mucosa in inflammation and local damage to mucociliary clearance (INC ‘d mucus production leads to blockage sinus ostia)
What are the common bacterial causes of ABRS?
- Streptococcus pneumoniae
- Haemophilus influenzae
(accounts for more than one half of known cases)
Whjat is a more common bacteria that causes ABRS in children?
- M. catarrhalis (20% of cases)
What is the typical duration of ABRS?
7-10 days after viral infection
How is ABRS diagnosed?
Acute S/Sx not resolved after 10 days or worsen (7-10 days after viral infection)
What are S/Sx of ABRS observed in Adults?
- Nasal congestion
- Purulant nasal/post-nasal discharge
- Facial pain/pressure
- Diminished sense of smell
- Fever
- Cough
- Maxillary tooth pain
- Fatigue
- Ear fullness/pain
What are S/Sx of ABRS observed in Children?
- Purulant nasal/post-nasal discharge
- Nasal congestion
- Mouth breathing
- Persistant cough (worse at night)
- Fever
- Pharyngitis
- Ear discomfort
- Halitosis
- Morning periorbital edema
- Fatigue
- Facial/Tooth Pain
What are treatment goals for patients with ABRS?
Relieve symptoms (first 7-10 days), eliminate bacteria with approriate ABX
T or F: ABX therapies are 1st LINE treatment for ABRS?
F; reserve ABX TX for patients with worsening conditions after 10 days
If patient diagnosed with ABRS has no penicillin allergies, what ABX treatment should be considered?
- Amoxicillin (1st LINE)
- Augmentin
If patient diagnosed with ABRS has severe allergies, what ABX treatment should be considered? Adult? Children?
Adult:
- Bactrim (1st LINE)
- Respiratory FQ (if resistance)
- Doxycycline
- Macrolide
Children:
- Macrolides
T or F: Patients under 8 can be treated with Doxycycline for ABRS.
F; DO NOT GIVE to patients this young and should avoid under 18 Y/O
DON’T GIVE BACTRIM!!
Kids might be resistant (not an answer on the test)
What is Pharyngitis? What is the most common cause?
Acute painful inflammation of the throat; S. pyogenes (20-30% children, 15% adults)
T or F: May choose to treat pharyngitis for S. pyogenes before the rapid strep test confirms DX.
T
What is the specific treatment for pharyngitis caused by S. pyogenses?
- Penicillin or Amoxicillin (1st LINE TXs)
- Cephalosporin (more effective in recurance, option in non-type 1 PCN allergies)
- Macrolides
- Clindamycin
T or F: Patients can return to school/work if improving after 24h therapy.
T; symptoms should resolve in 3-5 days.
What are S/Sx of Streptococcal pharyngitis?
- Sudden onset sore throat with severe painful swelling
- Fever
- HA
- Abdominal pain
- N/V
- Eyrthema with possible patchy exudates (pharyngeal, tonsillar)
- Swollen red uvala
- Halitosis
- Soft palate petachiae
- Sarlitinoform rash
What diagnostic test are available for streptococcal pharyngitis?
- Rapid antigen detection test (RADT)
- Throat swab and culture (GOLD STANDARD)
What is the etiology of the common cold?
- Rates INC in fall and winter months
- Last 10-14 days
- Can be complicated by bacterial infections
- Children most likely to transfer cold to adults
What induces cough in patients with a common cold?
Tracheobronchial inflammation and irritation
What are treatment goals for patients with the common cold?
Minimize symptoms and prevent spread (No role for ABX)
What are non-pharmacological therapies for treatment of the common cold?
- Cool mist humidification
- Intranasal saline with/without buld suctioning
- INC fluids throat lozenges
- Saline gargles
- Rest
What pharmacological therapies are available for treatment of common cold? Name them.
- Cough and cold preparations (OTC)
- Analgesics (Acetaminophen, Ibuprofen)
-
Decongestants
- Intranasal: Oxymetasoline, Phylephrine
- Systemic: Phenyephrine, Pseudoephedrine
- Cough Supressants (Dextromethorophen)
- Expectorants (Guaifenesin)
- Anticholinergics (Intranasal Ipratropium)
T or F: Dextromethorphan, a relative of morphine, lacks opiate properties except in overdose and will control cough
T; depresses medullary cough center
What ADRs are associated with Guaifenesin? Why?
N/V; irritates gastric mucosa and stimulates respriatory secretions –> INC fluid volumes, DEC viscosity
What vitamins and herbs are beneficial for adults?
- Vitamin C
- Echnacea purpurea