April 2 Lecture Flashcards
a severe infection in
newly born infants
Neonatal Sepsis
SIRS
systemic
inflammatory response syndrome
Definition of neonatal sepsis
Clinical syndrome of
bacteremia with systemic signs &
symptoms of infection in the first
four weeks of life.
SIRS can be identified by the presence of which 2 or more
of the following signs
✔ Abnormal heart rate
✔ Respiratory distress
✔ Abnormal leukocyte count
✔ Abnormal temperature
Two types of neonatal sepsis
○ Early Onset
○ Late Onset
Neonatal sepsis affects how much in every birth?
approximately 2 infants per
1,000 births
Neonatal sepsis has a higher incidence in?
in premature & low birth weight infants
Cause of neonatal sepsis
○ Bacteria
○ Immature immune response
○ Genetic predisposition
An important cell in immunity against pathogens
Neutrophils
Why does neonate’s neutrophils have decreased chemotaxis?
Due to decreased chemoattractant.
a type of WBC that ingests pathogens
Monocytes
Opsonization
The coating of a pathogen with
antibodies that makes it susceptible to phagocytosis
The process of cells (phagocytes) engulfing, ingesting, & destroying pathogens.
Phagocytosis
antibodies that promote opsonization
Opsonins
Pathogen’s route in entering a neonate’s body
✔ Prenatal period
✔ Perinatal period
✔ Postnatal period
Classifications of neonatal sepsis
● Congenital Infection
● Early-Onset Sepsis
● Late-Onset Sepsis
Major risk factor is maternal infection
Congenital Infection
When does early onset sepsis occur?
Birth to 7 days
When does late onset sepsis occur?
8 to 28 days
Where does late-onset sepsis acquired?
Acquired in hospital, home, or community.
5 associated factors for early-onset sepsis
✔ Prolonged rupture of membranes > 12 hours
✔ Difficult or prolonged labor
✔ Birth asphyxia and difficult resuscitation
✔ Multiple per vaginal examination
✔ Very low birth weight or preterm baby
A type of sepsis caused by the organisms of the external environment of home or hospital and is often transmitted through the hands of the care provider.
Late onset sepsis
Gram negative organisms in late onset sepsis
e. Coli
klebsiella
enterobacter
serratia
pseudomona
proteus
citrobacter
Presentation of late onset sepsis
septicemia
pneumonia
meningitis