Episode of healthcare-associated Staphylococcus aureus bloodstream infection
Glossary Item Attributes
Identifying and definitional attributes
|Metadata item type:
Health, Standard 10/06/2022
A patient episode of a Staphylococcus aureus bloodstream infection (SABSI) is a positive blood culture for Staphylococcus aureus (S. aureus). For surveillance purposes, only the first isolate per patient is counted, unless at least 14 days has passed without a positive culture, after which a subsequent episode is recorded.
A SABSI is healthcare-associated if Criterion A1 or A2, or Criterion B1, B2, B3 or B4 are met.
CRITERION A: The patient’s first Staphylococcus aureus positive blood culture was collected:
A1. > 48 hours after admission, with no documented evidence that infection was present (including incubating) on admission
A2. < 48 hours after discharge.
CRITERION B: The patient’s first positive Staphylococcus aureus blood culture was collected ≤ 48 hours after admission and one or more of the following key clinical criteria is met:
B1. SABSI is a complication of the presence of an indwelling medical device
B2. SABSI occurs within 30 days of a surgical procedure where the SABSI is related to the surgical site, or 90 days for deep incisional/organ space infections related to a surgically implanted device
B3. SABSI was diagnosed within 48 hours of a related invasive instrumentation or incision
B4. SABSI is associated with neutropenia* contributed to by cytotoxic therapy and is unrelated to the presence of an indwelling medical device.
If neither Criterion A1 or A2, nor Criterion B1, B2, B3 or B4 are met, then the SABSI is considered to be community-acquired for the purposes of surveillance.
**Neutropenia is defined as at least two separate calendar days with values of absolute neutrophil count (ANC) or total white blood cells count (WBC) <500 cells/mm3 (<0.5 X 109/L) on or within a seven-day time period which includes the date the positive blood specimen was collected (Day 1), the three calendar days before and the three calendar days after.