Antibiotic spectrum index: Difference between revisions
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** Penicillin-resistant [[pneumococcus]] (PRP) |
** Penicillin-resistant [[pneumococcus]] (PRP) |
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** [[Moraxella]] and [[Haemophilus influenzae]] |
** [[Moraxella]] and [[Haemophilus influenzae]] |
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** [[Mycoplasma]] and [[Chlamydophila]] |
** [[Mycoplasma]] and [[Chlamydophila]] (atypicals) |
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** [[Anaerobes]] (in general) |
** [[Anaerobes]] (in general) |
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** [[Bacteriodes fragilis]] (specifically) |
** [[Bacteriodes fragilis]] (specifically) |
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!Antibiotic |
!Antibiotic |
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!MSSA |
!MSSA |
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!E.faeca |
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!Enterococcus |
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!Anaerobes |
!Anaerobes |
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!Bacteroides |
!Bacteroides |
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!M/H.flu |
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!Moraxella/Haemophilus |
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!E/K |
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!Escherichia/Klebsiella |
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!AmpC |
!AmpC |
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!ESBL |
!ESBL |
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!Pseudo |
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!Pseudomonas |
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!MRSA |
!MRSA |
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!PRP |
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!Pen-R pneumococcus |
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!VRE |
!VRE |
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!Atypicals |
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!Atypical |
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!MDRO |
!MDRO |
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!ASI |
!ASI |
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|13 |
|13 |
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MSSA = methicillin-susceptible [[Staphylococcus aureus]]; E/K = [[Escherichia coli]]/[[Klebsiella]]; M/H.flu = [[Moraxella]] and [[Haemophilus influenzae]]; Pseudo = [[Pseudomonas aeruginosa]]; MRSA = [[methicillin-resistant Staphylococcus aureus]]; PRP = penicillin-resistant [[pneumococcus]]; VRE = vancomycin-resistant [[Enterococcus]]; atypicals = [[Mycoplasma pneumoniae]] and [[Chlamidophila]]; MDRO = multidrug-resistant organisms |
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==Further Reading== |
==Further Reading== |
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Revision as of 12:20, 22 September 2022
- Measures the spectrum of an antibiotic, with a range from 0 to 14
- One point for activity against each of the following:
- Methicillin-sensitive Staphylococcus aureus (MSSA)
- Methicillin-resistant Staphylococcus aureus (MRSA)
- Enterococcus faecalis
- Vancomycin-resistant Enterococcus faecalis (VRE)
- Escherichia coli or Klebsiella
- AmpC producers (Enterobacter, Serratia, and Citrobacter)
- Extended-spectrum β-lactamase (ESBL) E. coli/Klebsiella
- Pseudomonas aeruginosa
- Penicillin-resistant pneumococcus (PRP)
- Moraxella and Haemophilus influenzae
- Mycoplasma and Chlamydophila (atypicals)
- Anaerobes (in general)
- Bacteriodes fragilis (specifically)
- Multidrug-resistant organisms
- For each patient, the number of points for every antibiotic is added to give a total daily ASI
Sample Spectrum Indices
| Antibiotic | MSSA | E.faeca | Anaerobes | Bacteroides | M/H.flu | E/K | AmpC | ESBL | Pseudo | MRSA | PRP | VRE | Atypicals | MDRO | ASI |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dicloxacillin | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| Oxacillin | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| Amoxicillin | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 |
| Ampicillin | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 |
| Cephalexin | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 |
| Erythromycin | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 2 |
| Erythromycin | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 2 |
| Metronidazole | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 |
| Penicillin | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 |
| Aztreonam | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 3 |
| Cefazolin | 1 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 |
| Cefdinir | 1 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 |
| Cefixime | 0 | 0 | 1 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 |
| Cefpodoxime | 1 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 |
| Rifampin | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 3 |
| Azithromycin | 1 | 0 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 4 |
| Cefprozil | 1 | 0 | 1 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 |
| Ceftazidime | 0 | 0 | 1 | 0 | 1 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 4 |
| Cefuroxime | 1 | 0 | 1 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 |
| Chloramphenicol | 0 | 0 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 |
| Clarithromycin | 1 | 0 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 4 |
| Clindamycin | 1 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 4 |
| Piperacillin | 0 | 1 | 1 | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 4 |
| TMP-SMX | 1 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 4 |
| Cefotaxime | 1 | 0 | 1 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 5 |
| Cefoxitin | 1 | 0 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5 |
| Ceftriaxone | 1 | 0 | 1 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 5 |
| Colistin | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 5 |
| Daptomycin | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 1 | 5 |
| Doxycycline | 1 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 5 |
| Gentamicin | 1 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 5 |
| Minocycline | 1 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 5 |
| Telavancin | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 1 | 5 |
| Tobramycin | 1 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 5 |
| Vancomycin | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 1 | 5 |
| Amikacin | 1 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 1 | 6 |
| Amoxicillin-clavulanic acid | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6 |
| Ampicillin-sulbactam | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6 |
| Cefepime | 1 | 0 | 0 | 0 | 1 | 1 | 1 | 0 | 1 | 0 | 1 | 0 | 0 | 0 | 6 |
| Linezolid | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 0 | 1 | 6 |
| Ticarcillin-clavulanate | 1 | 0 | 1 | 1 | 1 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 6 |
| Ceftaroline | 1 | 1 | 0 | 0 | 1 | 1 | 1 | 0 | 0 | 1 | 1 | 0 | 0 | 1 | 8 |
| Ciprofloxacin | 1 | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 8 |
| Piperacillin-tazobactam | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 8 |
| Ertapenem | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 1 | 0 | 0 | 1 | 9 |
| Levofloxacin | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 0 | 0 | 1 | 0 | 1 | 0 | 9 |
| Meropenem | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 1 | 10 |
| Moxifloxacin | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 1 | 1 | 0 | 1 | 0 | 10 |
| Imipenem-cilastatin | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 1 | 11 |
| Tigecycline | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 13 |
MSSA = methicillin-susceptible Staphylococcus aureus; E/K = Escherichia coli/Klebsiella; M/H.flu = Moraxella and Haemophilus influenzae; Pseudo = Pseudomonas aeruginosa; MRSA = methicillin-resistant Staphylococcus aureus; PRP = penicillin-resistant pneumococcus; VRE = vancomycin-resistant Enterococcus; atypicals = Mycoplasma pneumoniae and Chlamidophila; MDRO = multidrug-resistant organisms
Further Reading
- Development and Application of an Antibiotic Spectrum Index for Benchmarking Antibiotic Selection Patterns Across Hospitals. Infect Control Hosp Epidemiol. 2017;38(8):993-997. doi: 10.1017/ice.2017.94.
