Prescribing antibiotics in the clinical setting
[Pages:78]Prescribing antibiotics in the clinical setting
Nicole Srivastava, Pharm D, BCPS Clinical Pharmacy Specialist, Infectious Diseases Christiana Care Health System
Objectives
Review general principles in antimicrobial therapy
Common organisms Antibiogram Bactericidal vs bacteriostatic Duration of therapy
Review the pharmacology of common antimicrobials
Mechanism of action Spectrum of activity Place in therapy Adverse effects Key points
Gram positive organisms
Gram negative organisms
Anaerobic organisms
Atypical organisms
Legionella Mycoplasma Chlamydophila
Multi Drug Resistant Organisms
E = Enterococcus faecium S = Staphylococcus aureus K = *ESBL producing-Klebsiella and E. coli A = Acinetobacter baumannii P = Pseudomonas aeruginosa E = Enterobacter species
Boucher HW, et al. Clin Infect Dis. 2009;48:1-12.
Common organisms
Site
Meningitis (dependent on age)
Common organisms < 1 month: S. agalactiae, E. coli, L. monocytogenes, Klebsiella 1-23 months: S. pneumoniae, N. meningitidis, S. agalactiae, H. influenzae, E. coli 2-50 years: N. meningitidis, S. pneumoniae > 50 years: N. meningitidis, S. pneumoniae, L. monocytogenes, aerobic GNB Post neurosurgery: aerobic GNB, P. aeruginosa, S. aureus, coag-neg staph
Skin
Coag-neg staph, S. aureus, Streptococcus , Corynebacterium, Propionibacterium
Oral cavity
Viridans streptococci, Peptococcus, Peptostreptococcus, Eikenella, Haemophilus
CAP: S. pneumoniae, H. influenzae, M. pneumoniae, C. pneumoniae, Legionella +/- S. aureus and aerobic GNB
Pneumonia
HAP: S. pneumoniae, H. influenzae, E. coli, K. pneumoniae, Enterobacter, Proteus, Serratia, S. aureus, P. aeruginosa, Acinetobacter
HCAP: HAP organisms + atypical organisms
Available from: . Accessed on: 12 September 2012
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