Diagnostic criteria for blood stream infection from central venous catheter includes all except?
Answer- D. Apparent source of blood stream infection presentIt is defined as the presence of bacteremia originating frorn an intravenous catheter.The most comlnon cause of nosocomial bacteremia.Laboratory diagnosis-CRBSI means a patient with an intravascular catheter has at least one positive blood culture obtained from a peripheralvein, clinical manifestations of infections.Long-term catheters-Semi-quantitative growth of 15 cfu/catheter segment of the same microbe from both the inseion site culture, and the catheter hub culture strongly suggests that the catheter is the source ofa bloodstream infection.
Colony count from catheter culture is 5 times more than peripheral blood culture
Blood culture form catheter shows colony formation at least 2 hours before the peripheral blood culture
Quantitative catheter tip culture showing >103 CFU/ catheter segment whereby the same organism is isolated from the catheter segment and a peripheral blood sample
Apparent source of blood stream infection present