URTI Flashcards
ILI
Sore throat, Rhinorrhea, cough, Fever, myalgia, arthralgia
Pharyngitis
usually caused by viruses
sore throat and pharyngeal inflammation (erythema, exudate, edema, vesicles and ulceration)
fever
Diphtheria (caused by gram positive corynebacterium diphtheriae)
sore throat, laryngitis (hoarseness), pseudomembranne formation on the palate and tonsils, cervical lymphadenopathy
Complications: myocarditis, cranial and peripheral nerves palsy, paralysis of soft palate and posterior pharyngeal wall
Pathogenesis of diphtheria
exotoxin of diphtheria, systemic effect and inactivation of elongation factor 2
DTP (detection, treatment and prevention) of diphtheria
throat swab, hoyle’s medium containing tellurite (black colony)
penicillin or erythromycin, diphtheria antitoxin
toxoid vaccine (tetra)
Larynngitis
hoarseness, dry cough, husky voice
vocal cord erythematous and hyperemia
Possible aetiology of laryngitis
respiratory viruses
chlamydophila pneumoniae
mycoplasma pneumonia
Group A strep
Acute epiglottitis
- may cause airway obstruction
- usually in children (H. influenzae), adult (H. influenzae, S. pneumoniae, S. pyogenes, non-innfectious causes)
- Symptoms: fever, irritability, dysphagia, dysphonia, respiratory distress, sore throat
- tripod like position, oral secretion drooling, toxic looking
Treatment and diagnosis of acute epiglottitis
Diagnosis: thumb sign on XR, red and inflamed epiglottis, blood and pharyngeal culture
Treatment: 3rd generation cephalosporin (ceftriaxone and cefotaxime)
Sinusitis (community acquired, acute)- Aetiology
S. pneumoniae
H. influenzae
moraxella catarrhalis (children)
Sinusitis - clinical presentations)
- severe and persistent symptoms after URTI
- purulent nasal and post nasal secretions
- facial pain, headache and fever
Complications:
- intraorbital and intracranial extension of infections
- osteomyelitis of frontal bones
Diagnosis of sinusitis
- Hx, physical examination
- sinus XR or CT
- sinus culture (sinus aspiration or puncture, not routine)
Otitis media- aetiology
- usually in children, predisposing factors: immunodeficient, anatomical abnormalities and eustachian tube abnormality
- same as sinusitis: M. catarrhalis, S. pneumoiae, H. influenzae
Otitis media- symptoms
ear pain, hearing loss, ear drainage
fever, irritability, lethargy
Otitis media - diagnosis
erythema and bulging tympanic membrane, pus, fluid in the middle ear
tympanocentesis (not routine, only done when immunocompromised, not responding to antibiotics, critically ill)