SVT and Gram Negative Sepsis in Neonates

Gram-positive and gram-negative bacterial toxins in sepsis

Bacterial sepsis is a major cause of fatality worldwide. Sepsis is a multi-step process that involves an uncontrolled inflammatory response by the host cells that may result in multi organ failure and death. Both gram-negative and gram-positive bacteria play a major role in causing sepsis. These bacteria produce a range of virulence factors that enable them to escape the immune defenses and dis...

Gram-negative sepsis: what dilemma?

serum procalcitonin levels distinguish gram-negative bacterial sepsis from gram-positive bacterial and fungal sepsis

background: serum procalcitonin (pct) levels differ in patients with bacterial or fungal infections and are significantly elevated in patients with gram-negative bacteremia. we evaluated the diagnostic accuracy of different inflammatory markers to discriminate sepsis caused by different pathogens. materials and methods: we included 328 episodes of bacteremia from 292 patients with sepsis and 31...

Concordance of endotoxemia with gram-negative bacteremia in patients with gram-negative sepsis: a meta-analysis.

The Limulus amebocyte lysate (LAL) assay is a sensitive method for detecting endotoxin. Using gram-negative (GN) bacteremia as the basis for comparison, concordance with endotoxemia in 45 studies could be expressed as an odds ratio. Calculation of summary odds ratios by the Mantel-Haenszel-Peto method indicated that the concordance of the results was no higher by the chromogenic LAL assay than ...

GRAM NEGATIVE BACILLI IN BURNS

In a period of nine months, 225 strains of Gram-negative bacilli isolated from burns were identified by a variety of tests in two burn centers in Tehran. The most common species were Pseudomonas aeruginosa, Pseudomonas fluorescens, Escherichia coli, Enterobacter agglomerans, Enterobacter cloacae and Klebsiella pneumoniae. Many strains of acinetobacter spp, providencia spp, proteus spp, ser...