Sepsis Flashcards
define sepsis
life-threatening organ dysfunction caused by dysregulated host response to infection
define colonisation
presence of microbe in human body without inflam response
define infection
inflam due to microbe
define bacteraemia
presence of viable bacteria in blood
what is the 2016 consensus definition of septic shock
persisting MAP<65 & lactate>2 despite euvolemia (adequate fluid resuscitation)
what infections are enteroccous streptococci associated with
gut commensal, UTI
define septicaemia
“booby trap for exams”
in which patients might you suspect a biofilm
prosthetic, CF, bronchiectasis
what sequence of events cause metabolic acidosis in sepsis
hypotension > hypoperfusion > hypoxia > anaerobic metabolism > lactic acid accumulation
what causes hypotension in sepsis
toxins stimulate TNFa to produce vasodilator NO and cause endothelial damage leading to leakiness
how is sepsis screened for
qSOFA, NEWS, SIRS, NICE
what is the general presentation of sepsis
pyrexic, pale/cold/clammy, muscle ache, confusion
what is required for a diagnosis of sepsis
NEWS2 >5 and suspected infection
what is the problem with SIRS
screens non-specific inflam not just infection
what are criteria for SIRS
2 of temp >36 / <38 HR >90 RR >20 WBC <4 / > 12 / 10% immature neutrophils confused
what is the sepsis 6
oxygen fluids blood culture and other cultures IV empirical antibiotics lactate, FBC & biochemistry monitor urine output