[Intestinal colonization of newborns treated in intensive care units by multiple drug resistant microorganisms].
The aim of the study was to examine the digestive tract colonisation of the newborns by multiple drug resistant bacteria during hospitalization. On the day of admission, after 5 days of hospitalization and at the day of discharge swabs from the anus of the 31 newborns hospitalized in OITiPN were taken and cultured on nutrient and selective media for staphylococci, enterococci, gram negative bacilli and fungi. Susceptibility to antibiotics of bacteria was determined, with giving attention to such resistance mechanisms as: methicillin resistant staphylococci (MRS), high level aminoglycoside resistant (HLAR) and vancomycin resistant enterococci (VRE) and the production of extended spectrum beta-lactamases (type ESBL) by gram negative bacilli. On the day of admission in 7 newborns methicillin resistant staphylococci (MRSCN) were grown in 24 no multiple drug resistant bacteria were found. Among those in 23 already after 5 days of hospitalization, colonization by multiple drug resistant strains was determined: coagulase-negative methicillin resistant staphylococci (MRSCN) were found in 16 children, strains of enterococci (HLAR) in 3 newborns and gram negative ESBL (+) bacilli also in 3 cases. On the day of discharge from hospital (after 13-141 days) in 23 out of 24 newborns enteric tract colonization by multiple drug resistant strains was assessed. In the enteric tract of 3 newborns hospitalized up to 2 weeks coagulase-negative methicillin resistant staphylococci (MRSCN) and/or HLAR enterococci were found; gram negative bacilli that produce ESBL appeared in newborns hospitalized for longer than 14 days. They were isolated in 12 out of 21 newborns. Forming of the enteric tract bacterial flora of the long hospitalized newborns depends on the time of hospitalization as well as on the used therapy.
Nowakowska
Maria
M
Zakład Mikrobiologii Slaskiej Akademii Medycznej w Katowicach. mhnowakowska@wp.pl
Rudy
Maria
M
Zientara
Maria
M
Maruniak-Chudek
Iwona
I
Martirosian
Gayane
G
Swietliński
Janusz
J
Radosz-Komoniewska
Halina
H
D024901:Drug Resistance, Multiple, Bacterial; D041981:Gastrointestinal Tract / Q000382:microbiology*; D006801:Humans; D007231:Infant, Newborn; D007363:Intensive Care Units, Neonatal; D016106:Methicillin Resistance; D008826:Microbial Sensitivity Tests; D013997:Time Factors; D020713:Vancomycin Resistance