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URespiratory- Blue
Viral infections of the respiratory tract, upper respiratory tract 1/4/13
| Question | Answer |
|---|---|
| Major Upper Respiratory Tract illnesses | Common cold, sinusitis, otitis media, pharyngitis, laryngitis, conjunctivitis |
| Number one Viral cause of common cold | Rhinovirus |
| Number of Rhinovirus strains | Over 100 |
| Immunity between strands of rhinovirus | No cross-protective immunity, short lived immunity (IgA) |
| How is rhinovirus spread | Respiratory droplets, especially hands to face |
| Most effective preventative measure for rhinovirus | hand washing |
| Most frequent reason for misuse of antibiotics | Rhinovirus |
| What is responsible for MOST symptoms in a common cold | Inflammatory mediators |
| Inflammatory mediators in a common cold | Histamine, prostaglandins, kinins, cytokines |
| Histamine causes | Dilation of blood vessels, nasal congestion and plasma exudate, activation of sneeze and cough reflexes |
| Prostaglandins cause | Mucous gland secretions |
| Kinins cause | Stimulation of pain nerve fibers (sore throat) |
| Cytokines cause | Headache, fever, chills, shivers, muscle aches |
| What does mucous color tell us about the difference between a viral and bacterial infection | Nothing |
| Rhinovirus attachment site is found in a | Canyon on the virus surface |
| Which antibody is responsible for recovery and immunity? | IgA |
| Preventative value of Vit C and Zinc? | None |
| Coronavirus characteristics | ssRNA and enveloped |
| Cause of common cold AND SARS | Coronovirus |
| Virus that can cause persistent infection and therefor prolonged infectivity | Adenovirus |
| Pharyngoconjunctival fever is spread through | Swimming pools |
| Diagnosis used for URTI | Detections of specific IgM, rise in IgG titer; isolation of virus from naso-pharyngeal, sputum and ocular secretions; PCR |
| When are respiratory infections in children most common | Winter |
| ARD was found commonly and is now vaccinated against in | Military recruits on bases |
| ARD and Keratoconjuctivitis occur in | Epidemics |
| How are URTIs transmitted | respiratory aerosols (cover your mouth!) |
| Adenovirus can also be transmitted by | Fecal-oral (ewww) |
| Treatment of URTI | Symptomatic only |