<prompt> Diagnostic criteria for blood stream infection from central venous catheter includes all except?Colony count from catheter culture is 5 times more than peripheral blood cultureBlood culture form catheter shows colony formation at least 2 hours before the peripheral blood cultureQuantitative catheter tip culture showing 103 CFU catheter segment whereby the same organism is isolated from the catheter segment and a peripheral blood sampleApparent source of blood stream infection present  <response>: 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 cfucatheter 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. 