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Resp Pharm- Bridges
Pharmacological Treatment of Influenza, RSV and Epiglottitis- Bridges 1/10/13
Question | Answer |
---|---|
Patients at high risk for complications due to Influenza are | Children under 2, adults over 65, immunocompromised |
Two classes of drugs for influenza treatment | Neuraminidase inhibitors and Adamantanes |
Mechanism of action for neruaminidase inhibitors | Prevents virus from being released from the HA and infecting other cells, shortens duration and severity of infection |
Neuramindidase inhibitors are effective against | Influenza A and B |
Neuraminidase inhibitors (drugs) | Zanamivir and Oseltamivir |
Oseltamivir/Zanamivir is giving (when?) | Prophylactically within the first 48 hours of exposure |
Oseltamivir is given (how?) | Orally |
Adverse effects of Oseltamivir | Nausea and vomiting, Neuropsychiatric events (especially in elderly) |
Adverse effects of Zanamivir | Bronchospasm |
Zanamivir is given (how?) | Inhalation |
Zanamivir and Oseltamivir both interfere with what? | Flu Vaccination |
Amantadine/Rimantadine are currently not recommended for prophylaxis. Why? | Almost all viruses are resistant |
Amantadine/Rimantadine are used for the treatment of | Influenza A |
Mechanism of action of Amantadine/rimantadine? | Prevents uncoating of viral RNA by inhibiting a viral proton channel preventing a required viron pH change |
Amantadine or Rimantadine enters the CNS? | Amantadine |
Which has more adverse effects, Amantadine or rimantadine? | Amantadine |
Adverse effects of amantadine/rimantadine | GI effects and CNS effects |
Who is most susceptible to CNS side effects? | The elderly |
Who is most susceptible to extreme Respiratory Syncytial virus infections? | Premmies and immunocompromised patients |
Most common cause of bronchiolitis and pneumonia is infants under 1 | Respiratory syncytial virus |
Palivizamab | Humanized monoclonal antibody (IgG) against RSV |
Palivizamab mechanism of action | Inhibits viral entry into cells |
Palivizamab is given (how?) | Monthly as a shot during RSV season |
A life threatening RSV infection is treated with | Ribavirin, oxygen therapy and mechanical ventilation |
Ribavirin mechanism of action | Unclear |
Ribavirin adverse effects | Inhalation causes reversible deterioration in pulmonary function, Oral causes reversible anemia due to hemolysis and bone marrow suppression |
Common etiologies of Epiglottitis | Strep pyogenes, Strep pneumoniae, Staph aureaus, Haemophilus influenzae |
Treatment for epiglottitis | Mainstay of airway, 3rd gen cephalosporin and anit-staph (for MRSA) |
Treatment example for epiglottitis | Cefotaximine (or ceftriaxone) and vancomycin |
Treatment for epiglottitis in patient with beta lacatam allergy | Levofloxacin and clindamycin |
3rd gen cephalosporins | Ceftiaxone, Ceftazidime, Cefotamin, Cefdinir |
Excretion mechanism of almost all 3rd gen cephalosporins | Renally |
Cephelosporin to give to patient with renal failure | Cetraiaxone because it is excreted biliary |
If he asks a question on a Beta lactam that we learned 4 months ago instead of a flu drug for the quiz tomorrow, he is a | dick. |