الفهرس 
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Abstract
The emergenceo f bacterialr esistare to different antimicrobiala gentsh as been
reported with increasingfr equencyw orldwidc,H owever,t hr.d egreeo f variabilityt o bacterial
resistancea mong geographicr egions suggcrtingt he need to obtain local informationf or
prop€r antimicrobialr ecommendationsT,h c presents tudy was carried out, therefore,t o
determineth e extenta ndp atterno f antibioticr usceptibilitya mongd ifferentc linical isolates.
This study included1 47 isclatesre coverefdro m3 50c linicals amplecso llectedfr om
inpetientsa nd outpatientss ufTeringf rom difrcrentb acteriailn fections.A ntibiotic sensitivity
was done by disc diffusion method and E{es using antibiotics in differenr groups. p
laclauusea ctivity of penicillin-resistainsto hesw asa lsot estedT. hem ostc ommonis otated
pathogen$ were K/crl.rrclla pnr:umuilae (25.5Vo), Pseutlomonas aentginosa (Zl .l%\,
Stulthyktcocasa rreils (19.7%) rnd Streplwars ltneumoniae( I 5%). The leastn umbero f
isolatesw sa Pnileus mirdhili:t (3.4r/o).ImiFnemp rovedt o be the mosta clived rug against
all testedg ram-positivea nd gram-negativei solatesfo llowedb y cephoperazone/sulbactum.
Among all quinolones testd, trovafloxacin and/or ciprofloxacin exhibited good activity
againstm ost tested strains.M ost isolatesw tErer esistantt o ampicillina ndp iperacillin,p
lactamasep roductioni n penicillin resistant isolatesw ash ighly prevelanta mongi solateso f
I’rolcus mirahilis (100%) followed by Pse*lononas aentginosa( 90.4%),S taphykrco,ccus
auwus (77.8%\,E coli (73.7o/o)a,n dK lefuiellap neumonia(e7 1.4%)w hile no placamase
productionw aso bservedin Slreptunwcu$p rwumonrue.