Surveillance of healthcare associated infection: Staphylococcus aureus bloodstream infection NBPDS
Data Set Specification Attributes
Identifying and definitional attributes
|Metadata item type:
|Data Set Specification
Health, Standard 09/12/2022
|Data Set Specification (DSS)
The purpose of this National best practice data set (NBPDS) is to support a comprehensive surveillance program of healthcare associated infections (HAI). HAIs are those infections that are not present or incubating at the time of admission to a healthcare program or facility, develop within a healthcare organisation or are produced by micro-organisms acquired during admission.
This NBPDS is intended to support Staphylococcus aureus bloodstream infection (SABSI) surveillance in Australian hospitals. It is designed for the purposes of HAI surveillance, not diagnosis. The value of surveillance as part of a hospital infection control program is supported by high-grade international and national evidence.
This NBPDS supports development of local forms and systems for surveillance of HAIs and associated data collection. This NBPDS applies to patient episodes of SABSI in Australian hospitals.
Case Definition – Healthcare associated Staphylococcus aureus bloodstream infection (SABSI)
A patient-episode of 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.
Collection and usage attributes
Episodes of infection [Staphylococcus aureus bloodstream infection (SABSI)]
|Guide for use:
Surveillance data should be used to identify local problem areas and implement appropriate policy and clinical interventions to improve the quality of care, not for external benchmarking. Effective surveillance systems provide the impetus for change and make it possible to evaluate the effectiveness of interventions. An effective surveillance system is one that provides timely and reliable information to hospital managers and clinicians to effectively manage HAI.
This NBPDS collects data at 2 levels:
The data elements to be collected at each level are specified in the table below:
Surveillance is an important tool to reduce HAI. The purpose of collecting, analysing, and then acting on reliable surveillance data is to improve quality and patient safety within a service or facility or jurisdiction.
Source and reference attributes
Australian Commission on Safety and Quality in Health Care
ACSQHC Healthcare Associated Infection Advisory Committee's Technical Working Group
ACSQHC (Australian Commission on Safety and Quality in Health Care) 2021. Implementation Guide for the Surveillance of Staphylococcus aureus bloodstream infection. Sydney: ACSQHC, viewed 10 February 2022 https://www.safetyandquality.gov.au/publications-and-resources/resource-library/implementation-guide-surveillance-staphylococcus-aureus-bloodstream-infection
|Related metadata references:
Supersedes Surveillance of healthcare associated infection: Staphylococcus aureus bacteraemia NBPDS
Health, Superseded 09/12/2022