PMID: 9005730Oct 1, 1996Paper

Usefulness of body surface cultures in newborns with early infection risk. Study of 735 neonates

Anales españoles de pediatría
I Gasser LagunaF Fernández Pérez

Abstract

Difficulty in the diagnosis of neonatal sepsis has lead to the practice of superficial cultures. The usefulness of this practice has been criticized repeatedly. Results of 3881 cultures performed on 735 newborns (age < or = 48 hr) with early infection risk were reviewed. The types of samples chosen were urine (UR), gastric aspirate (GA), pharyngeal (PS), external ear (ES), umbilical swab (US), meconium (MC) and blood. BBV for sepsis for the different samples is calculated, as well as which ones better reflect vertical transmission. At the time of the study, 342 newborns (46.5%) were already colonized. Bacteria most frequently isolated were: E. coli (92), PCN staphylococci (85), enterococci (83) and S. agalactiae (70). Twenty-nine newborns had bacteriemia, with S. agalactiae being the leading cause (16). ES correlated best with positive blood cultures (83.3%). UR culture sensitivity was significantly lower than that of all other samples. The Highest PPVs were for GA, PS and US. NPV was high and similar for all samples (98-99%). ES and US best reflected vertical transmission (p < 0.0001). MC provided the highest number of positive mixed cultures, most of them difficult to evaluate. Body surface sample advantages are: 1) The possi...Continue Reading

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