Övriga antibiotika - Klinisk MIC-brytpunkter och artrelaterade MIC-gränser
Non-betalactam antibiotics -
Clinical MIC-values and species-related MIC-breakpoints

All breakpoints in this table now harmonised through EUCAST. Breakpoints in hypertext (link): always consult footnote prior to use. 
Zone diameter breakpoint correlates available in disk diffusion breakpoint table.

Grey background: recently abandoned original SRGA breakpoints (Feb, 2008).

Table 2

Non-species related breakpoints

Enterobac-
teriaceae
Pseudo-
monas
Acineto-
bacter
Staphylo-
coccus
Entero-
coccus
Strepto-
coccus
S.pneu-
 moniae
Other strepto
cocci#
H.influ-
enzae
M.ca-
tarrhal
C.ureal
C.jeikei
N.gonor-
rhoeae
N.menin-
gitidis
Anaerobe,
Grampositive
Anaerobe,
Grampositive
Method:   A A A A A B B B B B B Footnote B

B

B

Amikacin 8/16 8/16 8/16 8/16 8/16 ent strep --   IE IE -- -- -- -- --
Gentamicin 2/4 2/4 4/4 4/4 1/1 ent strep --   IE IE -- -- -- -- --
Netilmicin 2/4 2/4 4/4 4/4 1/1 ent strep --   IE IE -- -- -- -- --
Tobramycin 2/4 2/4 4/4 4/4 1/1 ent strep --   IE IE -- -- -- -- --
Erythromycin IE -- -- -- 1/2 -- 0.25/0.5 0.25/0.5   0.5/16

0.25/0.5

IE -- -- -- --
Roxithromycin IE -- -- -- 1/2 -- 0.5/1 0.5/1   1/16 0.5/1 IE -- -- -- --
Klarithromycin IE -- -- -- 1/2 -- 0.25/0.5 0.25/0.5   1/32 0.25/0.5 IE -- -- -- --

Azithromycin

IE -- -- -- 1/2 -- 0.25/0.5 0.25/0.5   0.12/4

0.5/0.5

IE 0.25/0.5 -- -- --

Telithromycin

IE -- -- -- IE -- 0.25/0.5 0.25/0.5   0.12/8 0.25/0.5 -- -- -- -- --

Clindamycin

IE -- -- -- 0.25/0.5 -- 0.5/0.5 0.5/0.5   -- -- IE -- -- 4/4 4/4
Fusidic acid 0.5/0.5 -- -- -- 0.5/0.5 -- IE IE   -- -- 0.5/0.5 -- --    
Fusidic acid IE -- -- -- 1/1 -- IE --   -- -- -- -- -- -- --
Kloramfenikol 8/8 8/8 -- -- 8/8 -- -- (8/8)   2/2 -- IE -- 2/8    
Chloramphenicol IE 8/8 -- -- 8/8 -- 8/8 8/8   1/2 1/2 -- -- 2/4 8/8 8/8
Doxycyklin (2/2) -- -- -- -- -- -- --   -- -- -- -- --    
Doxycyklin IE -- -- -- 1/2 -- 1/2 1/2   1/2 1/2 -- IE -- -- --
Tetracyklin 2/2 -- -- -- 2/2 IE 2/2 2/2   2/2 2/2 -- 0.12/1 --    
Tetracyklin IE -- -- -- 1/2 -- 1/2 1/2   1/2 1/2 -- IE IE -- --
Tigecyklin 0.25/0.5 1/2 -- IE 0.5/0.5 0.25/0.5 0.25/0.5 IE   IE IE IE IE IE -- --
 

Non-species related breakpoints

Enterobac-
teriaceae
Pseudo-
monas
Acineto-
bacter
Staphylo-
coccus
Entero-
coccus
Strepto-
coccus
S.pneu-
 moniae
Other strepto
cocci#
H.influ-
enzae
M.ca-
tarrhal
C.ureal
C.jeikei
N.gonor-
rhoeae
N.menin-
gitidis
Anaerobes,
grampositive
Anaerobes,
gramnegative
Rifampicin 1/1 -- -- -- 1/1 -- 1/1 1/1   -- -- IE -- 1/1
(Prophylaxis)
   
Rifampicin IE -- -- -- 0.06/0.5 -- 0.06/0.5 0.06/0.5   0.5/0.5 IE IE -- 0.25/0.25(Prophylaxis) -- --

Vancomycin*

4/8 -- -- -- 4/8** 4/8 4/4 4/4   -- -- IE -- -- -- --

Teicoplanin

4/8 -- -- -- 4/8** 4/8 4/4 4/4   -- -- IE -- -- -- --
Linezolid* 2/4 -- -- -- 4/4 4/4 2/4 2/4   -- -- IE -- -- -- --
Daptomycin* IE -- -- -- 1/1** IE 1/1** IE   -- -- -- -- -- -- --

Quinupristin/-
dalfopristin

IE -- -- -- 1/2 E.faecalis: R
E.faecium: 1/4
-- --   -- -- -- -- -- -- --
Metronidazole 4/4 -- -- -- -- -- -- --   -- -- -- -- --    
Metronidazole IE -- -- -- -- -- -- --   -- -- -- -- -- 4/4 4/4
Norfloxacin (U) 0.5/1 0.5/1 -- -- -- -- -- --   -- -- -- IE -- -- --
Ciprofloxacin 0.5/1 0.5/1 0.5/1 1/1 1/1 -- -- 0.12/2   0.5/0.5 0.5/0.5 IE 0.03/0.06 0.03/0.06
(Prophylaxis)
-- --
Ofloxacin 0.5/1 0.5/1 -- -- 1/1 -- -- 0.12/4   0.5/0.5 0.5/0.5 -- 0.12/0.25 IE -- --
Levofloxacin 1/2 1/2 1/2 1/2 1/2 -- 1/2 2/2   1/1 1/1 IE IE IE -- --
Moxifloxacin 0.5/1 0.5/1 -- -- 0.5/1 -- 0.5/1 0.5/0.5   0.5/0.5 0.5/0.5 IE IE IE -- --
Nitrofurantoin 32/32 32/32 -- 32/32 32/32 E.faecalis: 32/32
E.faecium: R
32/32 -- -- -- -- -- -- --    
Nitrofurantoin (U) IE 64/64 -- -- 64/64 64/64 64/64 --   -- -- -- -- -- -- --
Trimetoprim 2/4 2/4 -- -- 2/4 2/4 2/4 --   -- -- IE -- --    
Trimethoprim (U) IE 2/4 -- -- 2/4 0.032/1 -- --   -- -- -- -- -- -- --
TrimSulfa 16/32 16/32 -- 16/32 16/32 -- 16/32 16/32   16/32 16/32 IE -- --    
TrimSulfa (ratio 1:19) IE 2/4 Pseudo-monas: --
S.maltophilia:
4/4
2/4 2/4 0.032/1 1/2 1/2   0.5/1 0.5/1 IE -- -- -- --
Colistin 2/2 2/2 2/2 2/2 -- -- -- --   -- -- -- -- --    
Colistin* IE 2/2 2/2 2/2 -- -- -- --   -- -- -- -- -- -- --
Fosfomycin-trometamol(U) IE 32/32 -- -- -- -- -- --   -- -- -- -- -- -- --
Spectinomycin 32/32 -- -- -- -- -- -- --   -- -- -- 32/32 --    
Spectinomycin* IE -- -- -- -- -- -- --   -- -- -- 64/64 -- -- --

#Other streptococci - breakpoints to follow. Meanwhile use Streptococcus A, B, C, G.
 

Listeria
Method B
Penicillin G (2/2), Ampicillin (2/2), Meropenem (0.5/0.5), TrimSulfa (2/4). Vid allergi hos gravida Erythromycin (0.5/0.5) som har sämre klinisk effekt. EUCAST MIC-distributions for Listeria monocytogenes.
P.multocida
Method B
Penicillin V (0.5/0.5), Ampicillin (0.5/0.5), Cefotaxime (0.12/1), Ciprofloxacin (0.12/0.25), Tetracycline (2/4) och TrimSulfa (2/4). EUCAST MIC-distributions for P.multocida.
H.pylori
Method B
Ampicillin (0.5/1), Clarithromycin (0.25/0.25), Tetracycline (2/2), Metronidazole (4/4). EUCAST MIC-distributions for H. pylori.
Legionella pneumophila See MIC-distributions for relevant antimicrobials.
Stenotrophomonas maltophilia**
 
Breakpoints for antimicrobials other than trimethoprimsulfamethoxazole are not given by SRGA or EUCAST. Clinical correlation between MIC-values and clinical outcome is lacking and testing is uncertain.
EUCAST MIC-distributions for Stenotrophomonas maltophilia.

 

*Isolat med MIC-värden över S/I-brytpunkten är ovanliga eller har ännu inte beskrivits. Identifiering och resistensbestämning skall upprepas och om resultatet konfirmeras skickas isolatet till referenslaboratorium

**MIC-bestämning på MH-medium.

(U) Brytpunkterna gäller endast vid nedre okomplicerad urinvägsinfektion.

*Isolates with MIC values above the S/I-breakpoint are very rare or not yet reported. The identification and antimicrobial susceptibility tests on any such isolate must be repeated and if the result is confirmed the isolate sent to a reference laboratory.

**MIC-determination on MH only.

(U) = Breakpoints valid for uncomplicated urinary tract infections only.

*Isolat med MIC-värden över S/I-brytpunkten är ovanliga eller har ännu inte beskrivits. Identifiering och resistensbestämning skall upprepas och om resultatet konfirmeras skickas isolatet till referenslaboratorium

**MIC-bestämning på MH-medium.

(U) = Urinvägsinfektioner.

*Isolates with MIC values above the S/I-breakpoint are very rare or not yet reported. The identification and antimicrobial susceptibility tests on any such isolate must be repeated and if the result is confirmed the isolate sent to a reference laboratory.

**MIC-determination on MH only.

(U) = Urinary tract infections only.

Kursiv text anger en länk till en fotnot. För den som skriver ut tabellen på papper är det viktigt att även alla fotnoter skrivs ut och följer med tabellen.

Text = a link to a footnote. If you print the table on paper, remember to print the footnotes - they contain important information on methodology.
MIC-gränser angivna som exempelvis 4/8, skall tolkas S< 4 och R>8 mg/l.

IE - Klinisk effekt utesluts ej men in vitro och/eller in vivo dokumentation saknas.

--  RAF avråder från resistensbestämning. Ej relevant behandlingsalternativ: 

  1. godkänd indikation saknas
  2. otillräcklig aktivitet även mot bakterier som ej utvecklat resistens
  3. resistens så vanlig (>50%) att medlet får anses oanvändbart

Proph - endast för profylax

Breakpoints given as 4/8, should be interpretated as S< 4 mg/l and R>8 mg/l.

IE - Clinical effect is not ruled out but EUCAST has not been able to find enough evidence to make a breakpoint decision.

--  SRGA advices against susceptibility testing. Not a relevant alternative:

  1. no approved indication
  2. insufficient activity
  3. extensive resistance development - the drug may be considered obsolete.

Proph - prophylaxis only

Metod:
A
= grundmedium utan tillsatser. Inkubation i luft,
35o C.
B = grundmedium + 5% skakhästblod + NAD. Inkubation 35o C i 5 % CO2. 
Method:
A
= medium without additives. Incubation in air, 35o C.
B = medium + 5% defibrinated horse blood + NAD. Incubation at 35o C in 5 % CO2.

RAF & RAF-M
Uppdaterat 2008-10-27, G Kahlmeter